Abstract Book of 18th Marine Industries Conference

18thMarine Industries Conference

Proceedings of:

18 - 21 Oct. 2016, Kish Island, Iran

MarineIndustriesConference

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Iranian Association of Naval Architecture & Marine Engineering18 - 21 Oct. 2016 - Kish Island

I

First of all, I would like to welcome you to the 18th Marine Industries Conference (MIC 2016) at beautiful Kish Island. It is an exciting time for all of maritime sectors to gather again in another event to show their continuous growth and adaptation to new challenges. Iranian Association of Naval Architects and Marine Engineers as a significant player in Iranian Maritime Industry, is very proud and delighted to have you here to participate and share your contribution to our various programs.I know many of you have travelled from quite a distance and I’d like to acknowledge our delegates from various international countries who have made this long trip to participate in the largest, most extensive Maritime conference we have ever had.I’d like to give you an idea of what you can expect and we hope to achieve over the next few days. Among of our comprehensive programs, there are interesting technical workshops, panels and meetings which more details can be found in the conference program. To all of you, thank you for being here, welcome, and enjoy the conference.

Dr. Said MazaheriConference Chairman


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Dear Colleagues,Iran has a vast coast in south and north with many marine resources that are the key for economic growth and development of the country. The objective of the 18th Marine Industries Conference is to enhance the knowledge of people active in this area and provide an opportunity to collaborate and share the marine knowledge and experience. In this regard, the Scientific Committee and the referees chose 360 papers out of 495 in ten technical areas to be published in the proceedings. In the 18th Conference the capacity for oral presentation of papers is increased to 50 papers, and 100 others are chosen to be presented by posters. Many papers in Farsi are also complemented with an English abstract enabling international attendees to get familiar with research areas in the country. The articles are evaluated by 98 referees including faculty members and experts in industry. Finally, we would like to appreciate the effort of paper authors, the Scientific Committee Members and the referees. Please let us know your comments to enhance the technical level of the conference in next year.

Regards,Dr. Mohammad Raie

Head of Scientific Committee


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Conference Chairman: Dr. Said Mazaheri Head of Scientific Committee: Dr. Mohammad Raie

The organizer of this annual conference is the Iranian Association of Naval Architecture & Marine Engineering (IRANAME) established in August 1998 in Tehran, Iran, which the major of Iran marine industries executives, marine universities, professors, students and ship owners are in touch with.

Conference Organization


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IV

Head of Scientific Committee: Dr. Mohammad RaeiScientific Committee

Dr. Moghaddam, Deputy of Minister of Petroleum for Engineering, Research and Technology

Dr.Shafiee, Director General of Engineering, Research and Technology of the Ministry of Petroleum

Dr. Vatani, Deputy of Technological Development of Vice-Presidency for Science and Technology

Dr. Manochehri, Deputy of Development National Iranian Oil Company

Dr. Farshchi, Deputy the Marine Environment of the Department of Environment

Dr. Sha’banikia, Technical and Executive Deputy of Renewable Energy Organization of Iran

Dr. Bahari, Operations Deputy of Iranian Offshore Engineering and Construction Company- Faculty

Member of University of Tehran

Dr. Hasanzadeh, Director of the Center for Study and Strategic Studies of Port & Maritime Organization

Dr. Hajizadeh Zaker, Director of the Iranian National Institute for Oceanography and Atmospheric Science

- Faculty Member of University of Tehran

Dr. Golshani, Behin Tarh Apadana Company

Dr. Khaksari, Faculty Member of Allameh Tabataba'i University

Mr. Seifollahi, Parsam Gostar Company

Dr. Katozian, Director of the Research Institute of Petroleum Industry

Dr. Nematollahi, Managing Director of Public Relations of the Ministry of Petroleum

Dr. Mortazavi, Director of HSE of the Ministry of Petroleum

Mr. Derafshi, Director of HSE of the National Iranian Oil Company

Dr. Mahrokhzad, Director of Legal Affairs of the National Iranian Oil Company

Mr. Bahmani, Managing Director of the National Iranian Drilling Company

Mr. Sajjadi, Managing Director of the National Iranian Oil Products Distribution Company

Mr. Safaie, Managing Director of the National Iranian Tanker Company

Mr. Yousefi, Managing Director of the Pars Special Economic Energy Zone

Mr. Mahmoudzadeh, Chief of the Shakhes Pajouh Research Institute


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Head of Scientific Committee: Dr. Mohammad RaeiScientific Committee

Mr. Hafezi, Managing Director of the Iranian Offshore Oil Company

Mr. Shabanpour, Managing Director of the Pars Oil and Gas Company

Mr. Saki, Managing Director of the Sadra Company

Dr. Daghigh, Pars Oil and Gas Company

Dr. Kasaeyan, Managing Director of the Rezmond Company

Dr. Javadi, Faculty Member of University of Tehran

Dr. Hashemi, Director of The Petroleum University of Technology

Dr. Saffarzadeh, Faculty Member of Tarbiar Modares University

Dr. Bavarsad, Faculty Member of Persian Gulf University

Dr. Kamranzad, Faculty Member of Iranian National Institute for Oceanography and Atmospheric Science

Dr. Khedmati, Faculty Member of Amirkabir University of Technology

Dr. Ghasemi, Faculty Member of Amirkabir University of Technology

Dr. Zera’atgar, Faculty Member of Amirkabir University of Technology

Dr. Ketabdari, Faculty Member of Amirkabir University of Technology

Dr. Shafieefar, Faculty Member of Tarbiar Modares University

Dr. Aghakouchak, Faculty Member of Tarbiar Modares University

Dr. Tabeshpour, Faculty Member of Sharif University of Technology

Dr. Zeinoddini, Faculty Member of K.N. Toosi University of Technology

Dr. Sadrinasab, Faculty Member of University of Tehran

Dr. Javid, Chairman of School of Marine Science and Technology of Islamic Azad University

Dr. Javaherdashti, Senior Advisor of Institute of Shakhes Pazhoh

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Contents

Marine economic and management

Modelling of knowledge management and creativity in National Iranian Oil Tanker Company�Karim Nassari, Kasra Pourkermani 1

Improving knowledge management strategies for petrochemical Institutions in Free Zone�Navid Shafiei, Kasra Pourkermani 2

The role of marine transport and the construction new ports according to policies of resistance economy �for the industry(case study: Astara port for northwest industries)

Ehsan Allah Zamani, Ali Karimi 3The study of impact of marketing mix (11p) to attract customers, based on Kushwaha Agrawal model. �

(case study: Bushehr ports & maritime organization, 2015)Mohammad Reza Dalvi , Fatemeh sadat Ghodrat ,Yaser Kazemi Askerani 4

Tah Lengi goods, economic opportunity or economic threats �Heydar Zare, Ramin Rajaee, Belgheys Ostovar 5

Investigation of development plan of Negin by stakeholders of Bushehr port�Mahmoud Hosseinzadeh, Heydar Zare, Abaedin Hashemi, Amir Dayerizadeh 6

Evaluation of Iran’s Coastal tourism according to sustainable development �Raziye Taghinejad, Danial Ghaderi 7

The assessment of status marine ecotourism in Khuzestan ports�Iran Baraee , Seyyed Jalil Mousavi 8

Improve production methods in the shipbuilding industry�Saeid Kazemi, Mohammad Azadvari, Fateme Zolfaghar Nasab 9

Impacts of ecotourism on marine biodiversity �Mansoureh s. Hosseinia, Homira Agahb, Asghar Mobarakia 10

Assessment of the value chain and supply chain maritime economic zone of the coast of Makran�Navid Mohammadi, Mohammad Mehdi Mohtadi 11

Provide criteria for evaluating and ranking contractors offshore oil and gas sector in Iran (Case study: �Iranian Offshore Engineering and Construction Company)

Saeed Zahmatkesh, Saeed Hosseinabadi 12Political, economic, environmental, socio-cultural and technical (PEEST) analysis of developing �

desalination plants in southern coasts of Iran, with special approach to resilience economy and sixth development master plan

Mansooreh Mohammadi, Mehdi Shafieefar, Soheil Radfar 13A survey of effective factors on efficiency of container transportation at Khorramshahr port for moving �

toward resistive economyPayam Daryaei, Shiva Shakeri 14

Political, economic, social, technological, environmental and legal (PESTEL) analysis of land reclamation �from sea

Mohsen Salmani, Mehdi Shafiee Far, Soheil Radfar 15Investigating the necessity of using data mining techniques in project management of marine industry�

Elnaz Ghanimat, Mohammad Hadi Sadredin 16

VI

Offshore oil and gas industry

Oscillating motion of triangular cylinder in a viscous fluid �Hamid Malah, Yuri Sergeyevich Chumakov, Sara Ramzani Movafagh 17

An image processing method for measuring contact angle of impacting drop�Mostafa Zamani Mohiabadi, Mohsen Mirzaei 18

Seafaring and marine transportation

VDR (Voyage Data Recorder)�Ismaeel Makizadeh 19

The prediction of dry ports’ cargo absorbing from cross-border cargo’s transactions using regression �models (Case Study: Yazd Dry Port)

Saeid Sherafatipour, Mahmoud Saffarzadeh 20Evaluation of using global positioning system (GPS) in port operation and management�

Shahnavaz Ayubi Ayubloo,Abouzar Adljoy Safaei, Mohammad Bina Vajargahi 21Investigation on the routes of incoming vessels at quays number 25 and 26 of the No.2 container terminal �

of Shahid Rajaie portSiyavash Filom,Roozbeh Panahi, Soheil Radfar3,Saeed Khoram 22

Analysis of ships maneuvering in Shahid Rajaie Port by using AIS data�Qadir Allahmoradi, Roozbeh Panahi 23

Rules and standards

Abandoned and Submerged Vessels as Cultural Resources for Iran: Nature and Legislation�Ramin Adibi, Najmeh Azizabadi 24

Health, safety and environment in marine industry

Studying and identifying of diving operations risks and its remedies (Case study: investigation of �drowning casualty of researching vessel master during diving operation)

Hojjat Khosravi 25 Evaluation requires of Tsunami warning system on the Makran coast�

Mohammad Moradi, Maryam Soyuf Jahromi 26Minimization of fire hazards in industry with operational approach to Law for the prevention of air �

pollution by islamic parliament of IranReza Karimzadeh, Shabab Jahanbin, Hossein Afraie 27

Ranking of risks of container loading and unloading operation in Imam Khomeini port by fuzzy TOPSIS�Heydar Zare, Amir Dayerizadeh , Abedodin Hashemi 28

A review of marine pollution effects on sea anemones�Pegah Javid, Narges Amrollahi Biuki 29

Ranking of effecting factors on safety management performance of Imam Khomeini port by AHP�Mahmood Hoseinzadeh, Heydar Zare, Abedin Hashemi 30

In environmental ethics, effective idea for the intrinsic value of preserving the marine environment�Iran baraee, Seyyed Jalil mousavi 31

VII

AIM application in classification of offshore units�Saeid Kazemi 32

Job safety analysis (human and equipment)�Mohsen Mohammadi Asl 33

Criteria for the selection and use of indicator species for environmental monitoring�Sana Sharifian, Narges Amrollahi Biuki 34

New Communication System for Information Exchange in the Maritime HF Frequency Band�Soudabeh khabazsabet 35

Communication equipment in the global maritime distress and safety system�Soudabeh khabazsabet 36

HSE performance management system in the Marine industries to help Model Scorecard�Mehrnaz baniamam, Mohammad hossien karimi 37

Management and Environmental Requirements of Discharge of Contaminated Ballast Water of Vessels �of territorial waters

Ali Sheykhbahaei, Akbar Shahrbaf, S.Alireza Mirzahooseini 38Assessment and management of the environmental technical and legal strategic component in this �

current a fifth principle of constitution of the organizationsSh.jahanbin, k.sabeti 39

Oceanographic and meteorological Conditions

Investigation of wave-mud interaction with viscoelastic behavior in SWAN third generation model�Mostafa Beiramzadeh, Seyed Mostafa Siadatmousavi 40

Marine Forecasting Systems in Caspian Sea, Persian Gulf and Oman Sea�Aliasghar Golshani, Alireza Vaselali, Said Mazaheri 41

Simulation of wind-wave generation in north of Queshm Island in maximum of annual wind speed�Mehdi Mohammadmehdizadeh ,Mohammad Pakhirehzan, Sajedeh balouchi, Faegheh Eslami 42

Evaluation of the Indian ocean fCO2 using SOCAT dataset �Danial Ghaderi , Maryam Rahbani 43

Study of the coastal sediments transport mechanism in the Tyiab estuary �Monirehalsadat Sadatkiaee 44

Water level fluctuations of the Caspian Sea (past, present and future)�Homayoun Khoshravan، Boshra Vafaie 45

Methodology and algorithm of coastal monitoring, case study: northern makran coasts; approach to �dentification of Oman Sea climate, solution for sedimentation problems and development of coastal zones

M. Bagheri, M. R. Allahyar, M. H. Nemati, M. Shafieefar, A. Pouyamehr 46Sub-inertial Oscilations due to Cyclone Ashobaa�

Mohammad Hossein Nemati, Kamran Koohestani, Mohammad Bagheri, Zohreh Hajisalimi 47Three dimensional modeling of wind-induced currents and study its effects on salinity and �

temperature distributionsArdeshir Farhady, Zohreh Heydari 48

Calculate the bearing estimation accuracy from the time delay accuracy in passive sonar�Mohammad Vahedian darghahi, Mohammad Hedayati Khodayari, Mehdi hashemi 49

Numerical simulations of the Intrusion Layers of the Persian Gulf outflow in the Oman Sea�Eram ghazi, Aliakbari Bidokhti, Mojtaba Ezam 50

A study of double-diffusion in the Oman Sea�Eram ghazi, Aliakbari Bidokhti, Mojtaba Ezam 51

VIII

Characteristics comparison of positive estuaries (including: two dimensional circulation, water �stratification, richardson number, internal froude number) by using of numerical modeling.

Maryam Mohammadsalehi, Mojtaba Ezam 52Carbonate chemistry in the Persian Gulf (results of the PGGOOS expedition, 2013)�

Abolfazl Saleh, Ali Mehdinia, Ali Hamzehpour, GholamRasoul Baskaleh, Neda Sheijooni Fumani, Sara Gholamipour 53

Ship design and construction

Production of hypalon Rubber for generating polymeric boat and investigation of properties�Mohsen khosravi babadi,Ehsan shahrokhi mousavi 54

Experimental investigation of marine engine (TD43) by using diesel and biodiesel fuel�Mohammad reza ahmadi moghadam, Liya hooshyary, Said farahat 55

Hydrodynamic Performance of ducted propellers Using Vortex Lattice Method�Ehsan Yari 56

Modification of semi-submersible and supercavitating propeller to prevent engine overloaded on high �speed craft

Abasi, J, Pakian bushehri, M, Hashemi, S.J 57Investigation the Roll motion of planing crafts in oblique waves �

Hamid Zeraatgar, Ali Rayatpisheh, Hossein Tahmasvand, Hassan Ghassemi 58Dry dock, useful dock for maintains and building of ships in khoramshahr�

Fateme zolfagharnasab, Hossein Parvareh, Mehdi Zayerchi 59Evaluation of the Immersion Ratio Effect on the Performance of the Semi-Submersible Propeller �

Ehsan Yari 60 Determining the Values of Elastic Modulus and Flextural Strength by the Combined Method of Three �

Point Bending Test, Analytical Relations and Finite Element SimulationHamed Asadi 61

Hydrodynamic coefficients of a surface piercing propeller in different Immersion�T.Aliakbari, T.Hadad, M.Karbalaee akbar, A.Moghaddas ahangari 62

Analysis and kinematical and dynamical optimization of propulsion system of The Tuna fish robot �through genetic algorithm and Strouhal number

Mohamad Hosein Salimi, Mostafa Karimian 63Influence of longitudinal position of outriggers of trimaran on hydrodynamic resistance of NPL series �

by maxsurf software Davood Ahmadi Amin Abadi, Reza Kariminejad, Mohammad Moonesun 64

Investigation the materials of friction plates for marine clutches�Majid Fatehifar, Ali Golshani Ajabshir, Naser Firuzan Galhe 65

Investigating vibration fatigue of shaft-coupling-rotor system for different unbalanced shafts �Farid Vakili-Tahami, Majid Fatehifar, Arash Mohammad Alizadeh Fard, Naser Firuzan Galhe 66

Developing software to design marine gearbox components according to BV rules�Naser Firuzan Gale, Farzad Fallahi, Hamed Alivand 67

Effect of stretch mooring line on the dynamic response of the semi-submersible platform �Hamidreza Ghafari, Morteza Dardel 68

Effect of buoy location on a moored semi-submersible motion �Hamidreza Ghafari Morteza Dardel 69

IX

Non-axisymmetric three dimensional stagnation point flow and heat transfer on a flat plate �Ali Shokrgozar abbasi, GHolam Rza Noroozi , Ebrahim Jafari 70

Depth identification of underwater vehicles moving near the free surface by using neural network�Seyed Khalil Shariati , Seyed Hossein Mousavizadegan 71

Feasibility and conceptual design of electrical propulsion systems for heavy-duty ships with modeling of �electrical motor driver

Mohammad Afiyatlou, Nader Shirdel, Naser Firuzan ghale 72Launching simulation of an UUV by using force of the internal blade tube �

Mahdi Mahdavikhah, Javad Enferadi 73Effect of transverse position of outriggers of trimaran on hydrodynamic resistance of NPL Series by �

maxsurf software Davood Ahmadi Amin Abadi, Mohammad Moonesun 74

Analytical calculation of the required oil flow rate for lubricatinggears and bearings of marine gearboxes�Hamed Alivand, Hamed Safarzade, NaserFiruzan ghale 75

Optimization of storage tank arrangement for a FPSO in different load case considering hydrostatic stability�Hamid KHodaei , Alireza Kiamehr , Arash Abbasnia, Abdolrahim Taheri 76

Investigation and calculation of hydrodynamic coefficient for an AUV by analytical-experimental method�Saeid Zarenezhad, Reza Hasanzadeh Ghasemi 77

Effect of shield gas compositions on mechanical properties of 5083 marine aluminum alloy by the GMAW �welding process

Alireza gharahi, Amin reza koushki 78A novel algorithm for data association and fusion for multi target multi sensor bearings �

Sayed mohammad taghi mousavi shoushtari, mohammad hedayati khodayari 79A numerical and theoretical study of wave interaction with floating vertical cylinders by boundary �

element method and removal of singularities in boundary integral equationsMehdi Nazari Berenjkoob, Mahmoud Ghiasi 80

Investigation and numerical analysis of current around a sample auv for hydrodynamic coefficients �calculation by tension test

Saeid Zarenezhad, Javad Enferadi, Vahid Shoorian 81Experimental hydrodynamic and cavitation investigation of submerged propeller�

A.H Razaghian, M.R Fathi Kazerooni, M.S Seif 82Thermal and mechanical analysis using finite element method for laser cutting high strength steel A517�

Yasaman Shabani, Mesbah Sayeh bani, Mahmood Ghiasi, Saeed Shadkam, Amirabbas Arbabi 83Modeling and control of autonomous underwater vehicle (AUV) in heading and depth attitude via PPD �

controller with state feedbackSoroush Vahid,Kaveh Javanmard 84

Mathematical Modeling for Planing Hulls Roll Motion Using Asymmetric 2D+T Theory�Sasan Tavakoli, Parviz Ghadimi, Abbas Dashtimanesh 85

Numerical simulation of flow around 2D flat planing plates and a parametric study of effective factors�Saeid Panahi, Parviz Ghadimi, Sasan Tavakoli 86

Numerical simulation of the maneuvering of an AUV by CFD�Masoud Hakamifard, Mahmoud Rostami V.F. 87

3D analysis of regular waves generated by wedge shape wave maker using openFoam code in numerical tank�Mahdi Yousefifard,Nima Ghorbani, Roya Shademani 88

Speed control of Autonomous Underwater Vehicle with constraints using Model Predictive Control�Seyyed Hossein Ghenaati , Shahram Aghaei 89

X

Optimization of buckling load of cylindrical shell made of curvilinear fiber under external hydrostatic �pressure with use of genetic algorithm

Hossein Nopour, Abdulreza Kabiri Ataabadi, Mahmood Mehrdad Shokrieh 90Accurate determination of lateral forces caused by angular regular waves on crossdeck of the trimaram �

ship using panel methodAdeleh Graylee, Mahdi Yousefifard, Mohammad Hasan Ghasemi 91

Optimization of radar cross section of a naval gun for increasing naval ships’ stealth�H. Nekoie, M. Hedayati Khodayari 92

Modeling and finite element analysis of a merchant ship towing wire rope�Alireza Jahanbakhsh, Ali Zahedifar, Reza Naghdabadi, Jamal Arghavani Hadi 93

Introducing a new computational model for system arrangement integration in ship design �Amir Mohamad Hoseini ,Mohammad Vahedian dargahi 94

Investigating the effect of Wire Arrangement and Number of Layers on the Strength of Marine Wire Ropes�Ali Zahedifar, Reza Naghdabadi, Jamal Arghavani Hadi , Alireza Jahanbakhsh 95

Stability and seakeeping performance assessment of a ship shape FPSO in three main operational �conditions at Persian Gulf: full loaded; half loaded and full ballast

Navid Baghernezhad, Pedram Edalat, Mahmoud Etemaddar 96Drag analysis of an AUV using Ansys Fluent software�

Manouchehr Fadavie-Ardestani, Navid Ta’abbodi-Jahromi 97Planning of shipyard base on building of ship in 5000 dwt with method of SLP�

Mohammad Azadvari,Fateme ZolfagharNasab, Kianoosh brdran 98Thermal and mechanical analysis using finite element method for laser cutting Mild Steel�

Yasaman Shabani, Mesbah Sayeh bani, Mahmood Ghiasi3, Saeed Shadkam, Amirabbas Arbabi 99Passive bearing only target tracking using a new batch processing �

Mohsen kariman Khorasani , Mohammad Vahedian Dargahi, Mohammad Hedayati Khodayari 100An experimental study on interceptor hydrodynamics effect on performance of COUGAR hull model shape�

Mohsen Mollae, Ali Asghar Moghaddas Ahangari, Hassan Ghasemi, Azize Asgari 101Determination of maneuvering hydrodynamic coefficients of planing hull by oblique towing model test�

Mohammadreza Fathi Kazerooni, Mohammad Saeed Seif 102

Coastal and offshore facilities

Analysis of band curvature in asymmetrical rolling process by FEM method�Hassan Sayyaadi, Ramin Yekta, Abolfazl Motekallem 103

New method of jackets installation in Persian Gulf�Seyed Ali Amid, Majid Sohrabpour 104

A study on the local joint flexibility (LJF) of two-planar tubular dk-joints in jacket substructure of �offshore wind turbines under in-plane bending loads

Ali Ziaei Nejad, Hamid Ahmadi 105Numerical analysis of lateral buckling of pipeline on the seabed using finite element method �

Ali Soukhak Lari,Ahmad Rahbar Ranji, Mostafa Bahmani Shourijeh 106Offshore geotechnical engineering sustainability in Southern Caspian �

Amir Rahimi, Mohammad Hassan Baziar, Behnam Fallah 107Pressure distribution around a near-wall circular cylinder subjected to steady current�

M. A. Salehi,S. Mazaheri, M. H. Kazeminezhad 108

XI

Modeling of pile Behavior under impact of ship with Opensees�Mohsen Nabati, Reza Naderi 109

Numerical modeling of hydrodynamic responses of double slotted breakwaters�Akbar Ghanei Ardakani , Mahdi Shafieefar 110

Modeling and building of Mobil boat hoist�Fateme zolfagharnasab, Hossein parvareh , Mehdi Zayerchi 111

Numerical and analytical determine of stress in rivet joint with double shear�Nabard Habibi, Kasra Moradi 112

The study of mooring systems for FPSO and the use of this platform with turret mooring system in the �Persian Gulf

Seyyed Mohammad Reza Seyyed Abasian, Mohammad Javad Ketabdari 113Effect of external water flow on response of cylindrical shell subjected to under water explosion �

S. Jalili, E. Shad, and M. Biglarkhani 114Study of several parameters effect on composite tube under bending and axial combined loading �

considering internal pressureNabard Habibi, Ehsan Derakhshan 115

Dynamics modeling and control of mooring lines while cargo vessels loading�Hassan Sayyaadi , Roya Rasa 116

Numerical simulation of vortex induced vibration of three cylinders in regular triangle arrangement at �high heynolds humber

Hassan Sayyaadi, Abolfazl Motekallem 117Engineering critical assessment of offshore pipelines under operational loading phase according to bs �

7910 guidelineSeyed Mohammad Hossein Sharifi, Mehran Kaveh, Hamed Saeidi Googarchin 118

Investigation of the effect of a buoy exterior shell parameters on the surface temperature in conjunction �with internal thermal source

Mahdi Mahdavikhah, Mohammad Alaghe band 119Thermal analysis of the body of a buoyant buoy floated in sea considering the solar radiation�

Mahdi Mahdavikhah, Amir Mohammadhosseini, Mohammad Alaghe band 120The role of organizational involvement, supplier management, product life cycle and product recycle �

on green supply chain management in offshore industry (case study: iranian offshore engineering and construction company)

Jalal HaghighatMonfared,Fatemeh Karimi 121Experimental Investigation of Using Tuned Mass Damper in Response Control of Tension Leg Platform �

Latif Nikmehr, Mohammadreza Tebeshpour 122Dynamic analysis of TLP in intact and damaged tendon conditions�

Ebrahim Malayjerdi, Ali Ahmadi, Mohammad Reza Tabeshpour 123Analytical and conceptual investigation of mathieu instability in SPAR�

Vahid Alipour Sarabi, Mohammad Reza Tabeshpour 124Impact of different configurations and increasing difficulty bracing elements in viscous damper performance�

Mostafa Vaezi, Ali Pourzangbar, Manouchehr Fadavi, Ahmad Rahbar Ranji 125Sensitivity analysis of offshore jacket platforms in Persian Gulf�

Ehsan shahsavari, Abdolrahim Taheri 126In-Place strength evaluation of existing fixed offshore platform located in persian gulf with consideration �

of Soil-Pile interactionsRasoul Sadian, Abdolrahim Taheri 127

XII

Fatigue analysis of offshore allowable free span length�E. Mahdavi, S. Sahifi 128

Cross-flow vortex induced vibration fatigue analysis of persian south gas field subsea pipelines due to �multi-spanning

Mahdi shabani, Abdolrahim taheri 129Dynamic response of tension leg platforms with special importance to tendon disconnection�

Mohammad Reza Mahmoodi, Mohammad Reza Tabeshpour, Ali Ahmadi 130Fatigue reliability of tension-leg platform tendon under random wave load�

Negin Nazari, Mohammad Reza Mahmoodi, Mohammad Reza Tabeshpour, Mojtaba Mahsuli 131Pneumatic breakwater possibility of using them for mooring ships in the Persian Gulf coastal areas and �

offshoreMehdi piroozi, Mohammad javad ketabdari, Milad bamdadi , Hanife farooghi 132

Hindcasting of significant wave height in Gulf of Mexico using neural network and M5’ model tree�Homayoon Ahmadvand 133

Hydrodynamic and sedimentation study in Noshahr port�Meysam bali, Majid Jandaghi Alaee, M. H. Moeini 134

Ultimate capacity of offshore jacket platforms by using beam elements, considering the effects of global �and local buckling of the elements

M.R. Tabeshpour, M.H. Erfani, H. Sayyadi 135

Marine Renewable Energy and New Technologies

Robust adaptive sliding control for the trajectory tracking of an unmanned underwater vehicle�Ahmad Mahdian Parrany, Alireza Arab Solghar 136

Numerical study of the hunter turbine performance in order to generate electricity from marine currents �and waves

Amir mansourian 137Economic study of developing tidal stream energy in persian gulf; a case study of Hengam island�

Soheil Radfar, Roozbeh Panahi, Siyavash Filom 138The optimization of the utilized organic Rankin cycle in waste heat recovery from the marine diesel �

engine exhaustM.Akbari Vakilabadi, M.Shams Ghoreishi, S.Nezhadhashemi 139

Analysis of heat energy recovery for vessel’s exhaust waste using organic rankine cycle�M.Akbari Vakilabadi, M.Shams Ghoreishi, V.Alizadeh, A.Imantalab 140

Influence of tool travers speed on microstructural and mechanical properties of friction stir welded �carbon steel.

Mahdi faraji, Islam ranjbar nodeh, Misbah sayebani, Ali asghar rezaee 141A green power supply method for offshore oil and gas platforms in order to reduce associated �

environmental pollutions in Persian GulfShahab Shahriari, Mohammad saeid Bagherinia, Pedram Edalat 142

Economic feasibility study of offshore wind turbine application on oil and gas jacket structures as an �alternative to decommissioning in Persian Gulf

Mohammad saeid Bagherinia, Shahab Shahriari, Pedram Edalat 143Increasing efficiency hopper suction dredging operations vessels by hypack software and dgps positioning system�

Soroush amiri, mohammad amiri 144

XIII

An experimental study of gyroscope effect on the stability of spar-type floating wind turbine �Fatemeh tavakoli, Rouzbe Shafaghat, Rezvan Alamian 145

Evaluating of capabilities of two-dimensional analysis for calibration of performance features of wave tank�Yaser Abbasi,Rouzbeh shafaghat,Rezvan alamian 146

Experimental-numerical study of tree dimensions wave tank for numerical methods validation and �parametric analysis

Saeed esbati diz , Rouzbeh shafaghat, Rezvan alamian 147Applying cognitive systems for adaptability sonar with environmental parameters�

Mohammad Vahedian darghahi, Mohammad Hedayati Khodayari 148Underwater Monitoring and Surveillance using Proposed Sonar in Shallow Water�

Javad Taghizadeh 149LES investigation of cavitating characteristics around a 3D Sphere �

Mohammad-Reza Pendar, Ehsan Roohi 150The feasibility of using tidal power plants in Iran �

Ali Sheykhbahaei, Akbar Shahrbaf, Alireza Kani 151Introducing and comparing of the ocean energy converter systems�

Ali Sheykhbahaei, Akbar Shahrbaf, S.Alireza Mirzahooseini 152Mechanisms and converters to extract power from wave dynamics�

Ali Sheykhbahaei, Akbar Shahrbaf, Andisheh Shiehbigi 153Novel fouling release coating systems based on nano technology for the marine industry�

Ebrahim Raeissi 154

Human Resources

Evaluate the effectiveness of the system to retain the educated human resources policies, objectives and �prospects of ports and maritime organization

Yaser Kazemi Askerani, Fatemeh sadat Ghodrat 155 The investigating relationship of social capital with organizational commitment has implement in a ship �

building industry (case study)Vahdat Pirouzram, Seyyed Abas Kazemi, Reyhaneh Bararnia 156

Pathology organizational culture of social capital(case study:Khorramshahr port and maritime �administration)

Seid Jalil Mousavi, Iran Baraei, Mohammad Amir Siavash Haghighi 157Training to prevent maritime accidents�

Fatemeh Shouri 158Development of the safety culture for the education of human sources in maritime technology and sciences �

Ahmadreza Dourandish, Afshar Bahmani, Farshad Haeri, Sasan Tavakoli 159Process of the technical skills development in the curriculum of maritime navigation branch in high school�

Ahmadreza Dourandish, Afshar Bahmani, Sasan Tavakoli 160

XIV

1 Planning and policy making Marine projects Management Financing methods and procurement engineering The post sanction and marine marketing Investment in marine industry Marine tourism and ecotourism Sea and economy

Marine economic and management1 Planning and policy making Marine projects Management Financing methods and procurement engineering The post sanction and marine marketing Investment in marine industry Marine tourism and ecotourism Sea and economy

Marine economic and management

Abstract Book of 18th Marine Industries Conference 18-21 Oct. 2016 – Kish Island, Iran

Iranian Association of Naval Architecture and Marine Engineering

1 | P a g e

Modelling of knowledge management and creativity in

national iranian oil tanker company

Karim Nassari1, Kasra Pourkermani2

1BSc student, Khorramshahr University of Marine Sciences and Technology 2Assistant Professor, Khorramshahr University of Marine Sciences and

Technology [email protected]

Abstract

Knowledge management helps the organizations to identify, select,

organize, publish and transmit important information and skills that are

part of the history of the organization and are generally unstructured

organization, helps. The National Iranian Oil Tanker Company of

organizational culture, use of information technology tools and

organizational learning on average, of sharing and knowledge sharing,

allocation of bonuses for employees, knowledge-based strategies and

policies, top management support, human resource management and

organizational creativity is weak , There is. Given that for each of the

factors examined in this study, indicators have been determined, it is

suggested that to improve each of these factors in the company will act

according to the criteria stipulated in this research. Including some of the

index would be a commitment and full support to the management of

creative activities and creative people, increasing the critical spirit

managers welcome the challenges and changes in the organization's

managers.

Keywords: Knowledge Management, Iranian Tanker.

Marine Industries Conference thAbstract Book of 18 Iran d, Kish Islan –21 Oct. 2016 -18


2 | P a g e

Improving knowledge management strategies for

petrochemical institutions in free zone

Navid Shafiei1, Kasra Pourkermani2

1Bsc student, Khorramshahr University of Marine Sciences and Technology 2Assistant Professor, Khorramshahr University of Marine Sciences and

Technology, [email protected]

Abstract

Lack of sufficient information from the organization will allow the people

remain unaware of the existence of programs and activities Procedure, as

a result of positive results from the implementation of the program or

activity will not be achieved. In this paper we have proposed that placing

a more rigorous plan of inter-company communication may be able to

tackle the issue.

Keywords: Arvand Free Zone, inter-company information flow.



3 | P a g e

The role of marine transport and the construction new

ports according to policies of resistance economy for

the industry(case study: Astara port for northwest

industries)

Ehsan Allah Zamani1, Ali Karimi2 1 branch manager of Kaveh port & marine services in Astara port, M.A;

[email protected] 2branch assistant of Kaveh port & marine services in Astara port, M.A;

[email protected]

Abstract

Today, in the global village, by globalization, industries are working in very

competitive environment. Competitors are using different methods and tools to

have more market share or survive in the market. One of these tools is reduction

of final price of products by reducing total cost. Almost all industries are using

different modes of transports especially marine transport. Based on some studies,

12% of final price of products is transport cost. One of the methods for reducing

transport costs is reducing transport distance by using new ports and new logistic

platforms and the other is optimization of transport facilities usage like ships and

trucks. In this study, we focused on industries in northwest of Iran and role of

Astara port as a new and nearer port to increase their market share by reducing

total cost with above methods. According to the notified policy of resistance

economy, this port role is studied. Research method is descriptive and methods

used to evaluate the cost of transport by taking two variable road transport cost

and marine transport cost in compare with previous routs, it was concluded,

Astara port are fully in line with the policy of resistance economy and in addition

to reducing significant transport costs, reduce environmental pollution and

marine pollution, and also create jobs and help the industry to get out from

depression.

Keywords: marine transportation, resistance economy, cost reduction,

ports.



4 | P a g e

The study of impact of marketing mix (p11) to attract

customers , based on kushwaha agrawal model . (case

study: Bushehr ports & maritime organization, 2015).

Mohammad Reza Dalvi 1 , Fatemeh sadat Ghodrat 2,Yaser Kazemi

Askerani 3

1Associate Professor, Amin instituted of Higher Education؛

[email protected] 2Master of Business Administration ,Amin University of Fouladshahr ؛

[email protected] 3Master of Human Resources management , Bonab Islamic Azad University ؛

[email protected]

Abestract

This study was conducted with the aim of understanding the marketing mix factors

affecting customers Bushehr port offices, using the marketing mix(p11). In this

study,The main hypothesis was that seem to affect the elements of the marketing

mix(p11) to attract customers PMO. In this study, we examined 11 secondary

hypothesis. This study is functional, in terms of target , and this is a description, in

terms of methodology, and this is the kind of correlation. The use of library studies

and distributed a built researcher questionnaire to collect data. Samples are users of

the ports service at three ports offices of Bushehr ( Bushehr, Genaveh, Assaluyeh ).

30 people were selected from clients who already have used the services of the

Department of Ports, to determine the Cronbach's alpha and evaluation the reliability

of the questionnaire, In total this 3 office. Sampling is a census of all persons and 130

questionnaires were distributed. 122 questionnaires were analyzed, after removing

incomplete questionnaires. So, the return rate of questionnaire is 93% . The data

collected was analyzed by using SPSS & LISREL softwares. We used single-variable

t-test and Friedman test, for data analysis. The results confirmed the hypothesis of

all. The results showed that there is a significant positive relationship between

marketing mix factors (p11) and attracting customer.

Keywords: product ، price ، Physical evidence ، Public Relation ،

participation.



5 | P a g e

Tah lengi goods, economic opportunity or economic

threats

Heydar Zare1, Ramin Rajaee2, Belgheys Ostovar3 1 Master of Port and Shipping, Adab Danan Consultant Group,

[email protected] 2 Head of NITC in South, NITC, [email protected]

3 Responsible of Drug laboratory, Hormozgan Province,

[email protected]

Abstract

After Iran-Iraq war, to encourage of sailors and owners of conventional

vessels, Customs exemption defined to some goods as Tah Lengi that this

law sailors can import some goods without pay of custom duties in any sea

travel. Over time, Tah Lengi effect on economic of small port in south.

Nowadays more of 90 percentage of import in these port done in form of

Tah Lengi. Most of conventional vessels active in imports of Tah Lengi

goods. Some of economic experts believe Tah Lengi is a threat for

production and sell of national goods.

This research by descriptive-survey method and using questionnaire to

investigate Tah Lengi goods are an opportunity or threat. Findings of

research show Tah Lengi goods have positive effect on boom of markets,

improvement of Purchasing power of people, improvement of economic

condition of sailors and job creation.

Keywords: Tah Lengi Goods, Economic Opportunity, Economic

Threats.



6 | P a g e

Investigation of development plan of Negin by

stakeholders of Bushehr port

Mahmoud Hosseinzadeh1, Heydar Zare2, Abaedin Hashemi3,

Amir Dayerizadeh4

1 Manager of specialized terminals, Bandar Imam Khomeini,

[email protected] 2 Master of Port and Shipping, Adab Danan Consultant Group,

[email protected] 3 port expert and Land support, Bandar Imam Khomeini,

[email protected]

4 Port State control Expert of Bushehr Port, [email protected]

Abstract

Aim of this research is assessment of advantages and disadvantages of plan

and development of Negin by stakeholders of Bushehr port (people and

companies under direct and indirect effects of port activities). Nature of

this research is application and use of descriptive-survey method to reach

the research goal. In this research used opinions of 100 person of port

employee, insurance expert, bank, Privatization Company, Fishery,

environment, works and people of Bushehr city. Findings of research show

job creation, Revenue, improvement of economic condition of people and

Bushehr port performance are the advantages and environment challenges

cause to air pollution and create noise are the disadvantages of plan and

development of Negin by stakeholders.

Keywords: Negin, port stakeholders, Bushehr port.

mailto:[email protected]



7 | P a g e

Evaluation of Iran's coastal tourism according to

sustainable development

Raziye Taghinejad1, Danial Ghaderi2 1Bachelor of Oceanography, University of Hormozgan;

[email protected] 2Bachelor of Oceanography, University of Hormozgan,;

[email protected]

Abstract

Coastal areas is the richest and most dynamic regions in the world and the

places of enormous economic and social activities and military activities.

Environmental protection of the coast is important for developing

countries and it is necessary for third world countries that to improve their

ranking. Iran's water border is limited in seven coastal provinces in the

north (Gilan, Mazandaran, Golestan) and in southern (Khuzestan,

Bushehr, Hormozgan and Sistan-Baluchistan), that about 22.5 percent of

the population live in these areas.

In this study, using satellite images and ESRI arcMap software, value of

Iranian coastline, area and perimeter of Persian Gulf islands was calculated

for comparison with global statistics and evaluate the potential of iran for

development in these areas with according to the sustainable development

and Resistive economy. Iran's length coastline in north is 742.61km and in

south is 2307.30 km, also area and perimeter of islands in Persian Gulf is

1997.69 square kilometer and 648.12 km.

Keywords: arcMap, natural islands, coastlines, coastal tourism,

sustainable development, competitiveness Index, Persian Gulf.



8 | P a g e

The assessment of status marine ecotourism in

Khuzestan ports

Iran baraee1 , Seyyed Jalil mousavi2

1 PhD of environmental engineering, expert of studies Khorramshahr port and

maritime 2 Student of PhD, Sociology of Economy and Development, expert of studies

Khorramshahr port and maritime

Abstract

Country's economic dependence on income from oil sales , require that

The use of the potentials of the country , preservation of natural resources

and tourism industry more and more taken into consideration . The tourism

industry after oil and the automotive industry is the world's third source of

revenue. Iran's strategic position in the Middle East as a bridge between

three continents: Asia, Europe, and Africa and having a diversified

transportation system in the country, appropriate infrastructure for

investment, growth and promotion of tourism industry is. One of the many

attractions of the sea is the human desire to travel and discover the

unknown the concept of marine ecotourism is to satisfy the human desire.

Provide efficient services in marine which is a subject of the maritime

industry In addition to public education in the field of tourism, the

necessary parameters affecting marine ecotourism industry. The aim of

this study is assessment of marine ecotourism in the ports of the province

is which eventually lead to solutions in this regard.

Key words: ecotourism, transportation, sea, ports.



9 | P a g e

Improve production methods in the shipbuilding

industry

Saeid Kazemi1, Mohammad Azadvari2, Fateme Zolfaghar

Nasab3

1Phd of marine engineering, University/Institute; [email protected] 2 M.Sc of naval artichector, bushehr Persian Gulf university;

[email protected] 3 M.Sc of naval artichector , boshehr Persian Gulf university ;

[email protected]

Abstract

Ship building industry in many developed countries today regarded as the

mother is an industry and based on the principles of lean manufacturing,

land status, activity related industries and employment, to respond to

military needs or develop oil fields followed and despite World Chrissies

continue to way this. Essential seems

Production efficiency by mechanized and automated processes can be a

ship building yards improve. Another way to increase manufacturing

productivity per ship, increasing the training effect is the result of ship

building series. Intermediate products or changes in strategy and

organization change was to increase efficiency by reducing the losses of

other ways. These methods qualitatively assessed for feasibility a ship

building yards. In this article shipyards ship building reference data and

manufacturing methods to determine effects of the proposed methods, is

used. Production scenarios, developed and finally is based on a series of

specific criteria.

Keywords: ship building, principles of lean manufacturing, Production

scenarios.



10 | P a g e

Impacts of ecotourism on marine biodiversity

Mansoureh s. Hosseinia1, Homira Agahb2, Asghar Mobarakia3

1Department of Environment ,Email: [email protected] 2 Iranian National Institute for Oceanography and Atmospheric Science,Email:

[email protected] 3Department of Environment,Email: [email protected]

Abstract

Biodiversity is one of the most important issues.On 22 May 2016, UN

secretary-general in his message on international day for biological

diversity, highlighted that it is an important cross-cutting issue. According

to the message of UN secretary-general, the lives, livelihoods and well-

being of people in all over the world is depend on the benefits of biological

diversity and its protection. Lack of protection of biodiversity cause direct

and indirect pressure on it, for example: habitat loss especially fragile

ecosystem,disorder on critical developmental stage,sea pollution,

extraction of resources, erosion and sedimentation, decline biodiversity

and aquatic fertility rate .It is clear that considering long term ecotourism

effect on biological diversity is costly and time consuming; hence

developing countries have shown less inclination to do it. This study aims

to present the experience of developed countries on negative effects of

ecotourism and their solutions. According to the pressures of negative

effect of ecotourism on wild life during long term, to enable ecotourism

policy makers to find solution to protect biological diversity against

destruction effects of ecotourism it can be useful to consider the

sustainable ecotourism pattern of developed countries.

Keywords: Marine Ecotourism; Biodiversity; Environmental

protection, Sustainable patterns





11 | P a g e

Assessment of the value chain and supply chain

maritime economic zone of the coast of Makran

Navid Mohammadi1, Mohammad Mehdi Mohtadi2 1Master Student of Management of Technology, University Of Tehran;

[email protected] 2Faculty member, Industrial engineering branch. Qom University of science &

technology, [email protected]

Abstract

This study conducted to assess the economic supply chain and value chain

Makran coast. our research method is qualitative and basis on comparative

studies. The methodology that used in this article is, interviews with

experts and in parallel, the library studies. Evaluation was carried out in

four stages that include, input process chain, fish breeding stations, main-

chain processes and outputs. In this article we have tried to estimate inputs

and assumptions of our fisheries chain from interviews and articles, to

estimate the outputs. The output of the chain consisting of fish, fingerlings,

shrimp, Artemia, Salicornia and many other outlets. According to

estimates, in addition to domestic needs, we have ability to export these

items to the countries.

Keywords: supply chain, value chain, makran coast, fisheries chain.



12 | P a g e

Provide criteria for evaluating and ranking contractors

offshore oil and gas sector in Iran (case study: iranian

offshore engineering and construction company)

Saeed Zahmatkesh1, Saeed Hosseinabadi2 1 Master's Degree Industrial Engineering, Iranian Offshore Engineering and

Construction Company; [email protected] 2 Master's Degree Industrial Engineering, Iranian Offshore Engineering and

Construction Company; [email protected]

Abstract

Selection of contractors in the oil and gas industry due to the large volume

of material resources involved in the mega national projects is vital, and

how to choose the contractors and the criteria involved in this sector is of

critical discussions. This article attempts have been made to the literature

and expert opinion oil & gas in the largest and most prominent Iranian

Offshore Evaluation criteria and screening and ranking criteria contractors

collected using questionnaires and Delphi technique to be performed, As

a result clustering of five categories: time cost - quality - safety and

reliability were taken And the results of using the proposed model and

technique selection matrix for 4 contractor participating in the tenders were

analyzed.

Keywords: Ranking, contractors, oil and gas, Delphi.



13 | P a g e

Political, economic, environmental, socio-cultural and

technical (PEEST) analysis of developing desalination

plants in southern coasts of iran, with special approach to

resilience economy and sixth development master plan

Mansooreh Mohammadi1, Mehdi Shafieefar2, Soheil Radfar3 1Master Student, Coastal Ports and Marine Structures engineering, Tarbiat

Modares University,[email protected] 2Professor, Marine Structures Group, Civil and Environmental Faculty, Tarbiat

Modares University, [email protected] 3Master Student, Coastal Ports and Marine Structures engineering, Tarbiat

Modares University,[email protected]

Abstract

Significant increase of water crises in different parts of the world, has led

to increasing development of desalination plants. According to IDA

statistics, in 2015, there were 18426 desalination plants all over the world

and 53.4 % of this capacity was installed in the Middle East. Iran by having

5800 kilometers of coastlines, needs to develop desalination plants to

achieve its economic goals. While Arab states of the Persian Gulf, have

utilized this technology to surmount their water crises and also economic

growth, Iran does not achieve its specified goals on developing coasts

specifically in strategic coasts of Mokran. This study aims to investigate

comprehensively the Political, Economic, Environmental, Socio-Cultural

and Technical aspects of developing desalination plants in PEEST analysis

framework. For this purpose, significance of developing desalination

plants have been investigated from the perspective of high level

documents, including sixth development master plan and general policies

of resilience economy.

Keywords: PEEST analysis, resilience economy, passive defense, sixth

development master plan, desalination plant and southern coasts of Iran.



14 | P a g e

A survey of effective factors on efficiency of container

transportation at khorramshahr port for moving

toward resistive economy

Payam Daryaei1, Shiva Shakeri2

1. M.Sc. of marine transportation, Manager of Khorramshahr container terminal,

Email:[email protected] 2. M.Sc. of maritime transportation, Operational part of Khorramshahr container

terminal, Email:[email protected]

Abstract

With expansion of using containers for movements of cargoes, container

terminals, known as a competition advantage for every port. This research

surveys strengths, weaknesses, opportunities and threats of Khorramshahr

container terminal and finally proposed proper strategies based on internal

and external factors evaluation and SWOT matrix for moving toward

resistive economy. In order to calculating the weight of identified factors,

distributed 33 questionnaires between marine experts at Khorramshahr

port and customs for using in AHP method. The results show that, position

of container operation of Khorramshahr port is Survival, which is equal

with W-O strategies in SWOT Matrix. By considering Survival position

have been suggest these strategies for moving toward resistive economy:

Improvement of port facilities and concentration and penetration into

potential markets, Improving organize of terminal by Research and

development strategies and Cooperation of private sector in port operation

for holding and enhancing position of this port.

Keywords: Container transportation, Khorramshahr port, Opportunities,

Threats, Strengths, Weaknesses.



15 | P a g e

Political, economic, social, technological,

environmental and legal (PESTEL) analysis of land

reclamation from sea

Mohsen Salmani1, Mehdi Shafiee Far2, Soheil Radfar3 1Master Student, Coastal Ports and Marine Structures engineering, Tarbiat

Modares University, [email protected] 2Professor, Marine Structures Group, Civil and Environmental Faculty, Tarbiat

Modares University, [email protected] 3Master Student, Coastal Ports and Marine Structures engineering, Tarbiat

Modares University,[email protected]

Abstract

Sedimentation is of the issues that a port is facing with, since its

establishment. There are several methods for sediment management in

ports. In this study, we tried to review various sediment management

methods. These includes methods that keep sediments out, methods that

keep sediments moving and methods that remove sediments from ports

that latter associated with dredging. Dredging in ports divides into two

categories: construction dredging and maintenance dredging. Dredging

produces wastes that need to be managed appropriately. One of these

methods is land reclamation. Land reclamations could refer to either

improving unusable natural land or creating new land areas. Its benefits in

port expansion are obvious. After reviewing its history and importance,

political, economic, social, technological, environmental and legal aspects

of land reclamation have been studied in PESTEL framework.

Keywords: land reclamation, PESTEL, Sedimentation, dredging,

sediment management



16 | P a g e

Investigating the necessity of using data mining

techniques in project management of marine industry

Elnaz Ghanimat1, Mohammad Hadi Sadredin2

1Master of Information Technology Engineering–Information Systems

Management, Shiraz University; [email protected] 2Faculty Member of Department of Electrical Engineering and Computer,

Shiraz University; [email protected]

Abstract

With the increasing development of information technology applications

in organizations, collecting and storing large amounts of data have been

facilitated. The information systems of organizations have the large

amounts of information related to organizational projections. Data mining

is the most important method by which useful patterns in the data are

known and provides information to the users and analysts to make critical

decisions. Given the importance of the project management, especially in

marine projects that has always the technical and executive complexity; it

is needed to organize coherent sciences for achieving the goals. This

research tries to examine the process of data mining and its applications in

the management of marine projects and investigates process of creating the

data set as the most important step in the data mining .This study is a

review and provides the strategies to use data mining techniques in marine

industries while examining the concepts associated with data mining and

its applications in the project management.

Keywords: Marine Industry, Project Management, Data Mining,

Knowledge

Offshore oil and gas technologies Offshore drilling Oil and gas well cementing technology Reservoir engineering and management Marine reservoir production

Offshore oil and gas industry2 Offshore oil and gas technologies Offshore drilling Oil and gas well cementing technology Reservoir engineering and management Marine reservoir production

Offshore oil and gas industry2



17 | P a g e

Oscillating motion of triangular cylinder in a viscous

fluid

Hamid Malah1, Yuri Sergeyevich Chumakov2, Sara Ramzani

Movafagh3

1,3Department of Hydroaerodynamics, Institute of Applied Mathematics and

Mechanics, Peter the Great St.Petersburg Polytechnic University, St.

Petersburg, 194064, Russia; [email protected], [email protected] 2Department of Hydroaerodynamics, Institute of Applied Mathematics and

Mechanics, Peter the Great St.Petersburg Polytechnic University, St.

Petersburg, 194064, Russia; [email protected]

Abstract

The system consisting of two rigid bodies in a viscous fluid is considered. The

main body with mass 𝑀 is placed in a viscous incompressible fluid, and the

body with mass 𝑚 moves inside the main body. This system is known as

vibrobot which can be used in arbitrary inspection fluid mechanic objects such

as oil industries pipes and tanks, as well as marine industries, medicine, etc.

In this paper, the interaction between the vibrobot and viscous fluid is studied

to achieve the motion laws of the vibrobot with the harmonic oscillation of

internal mass. Also the flow structure around vibrobot and its effects on the

hydrodynamic force acting on the vibrobot are investigated. Analyses are

carried out by direct numerical simulation of the vibrobot motion in a viscous

fluid by OpenFOAM package. Calculations are performed for the following

combinations of control parameters; The ratio of the viscous fluid mass to the

vibrobot mass 𝜇1 = 0.35, the ratio of the internal mass to the vibrobot mass

𝜇2 = 0.325 and dimensionless oscillation frequency 𝑓 = 1/5, when

Reynolds number takes values in the range of 50 < 𝑅𝑒 < 250. Calculations

have been performed with different initial approximations, determined by

different initial velocities of the incident flow.

Keywords: Triangular cylinder, Harmonic oscillation, Movable internal

mass, Numerical simulation, OpenFOAM, Viscous fluid.



18 | P a g e

An image processing method for measuring contact

angle of impacting drop

Mostafa Zamani Mohiabadi*1, Mohsen Mirzaei2

1Reasearch Department of High Temperature Fuel Cell, Vali-e-Asr

University of Rafsanjan, Rafsanjan, Iran , [email protected] 2Department of Engineering, Vali-e-Asr University of Rafsanjan, Rafsanjan,

Iran

Abstract

In this paper, a new image processing technique has been proposed to

measure the contact angle of symmetric and asymmetric drops. In this

proposal method, the contact angle is calculated with analyzing the side

view image of the drop without needing any liquid parameters. The

procedure of the technique is according to the secant technique coupled

with a Gaussian weighted function, as follows: at the beginning the exact

location of the contact points is obtained by Harris corner detector

function, then a series of points are selected on the drop boundary near the

contact points, in the third step, secant lines pass through each two given

points (contact point and points in the drop boundary) and calculates the

contact angles. in the final step, a gaussian weighted average function

is applied on the calculated angles and measure the main contact angle.The

contact angle measurement algorithm is verified with the measurement of

other recent studies in the available literature. Short processing time,

usability for all ranges of contact angles, applicability to both symmetric

and asymmetric drops and being fully automatic are other advantages of

the presented method.

Keywords: image processing, contact angle

https://en.wikipedia.org/wiki/Secant_line

3 Marine traffic and transport Marine logistic and services Bunkering

Seafaring and marine transportation3 Marine traffic and transport Marine logistic and services Bunkering

Seafaring and marine transportation



19 | P a g e

VDR (Voyage Data Recorder)

Ismaeel Makizadeh

Head of protection and maritime safety-Shahid Rajaee Port;

[email protected]

Abstract

While the VDR may not serve as a “life jacket or a fire extinguisher”, it

certainly is great control device in ensuring operational safety. It serves as

whether the gear performs as intended, and that crews required by

regulation, company policy, and the general rules of good seamanship. The

VDR is a management tool. It provides the vessel operation records. It also

provides the owner/operator with a comprehensive set of voyage data that

would be of assistance in the event of tort action. The tremendous benefits

to be accrued by installing a VDR system would offset the cost of its

installation. The Voyage Data Recorder is weather part of standard bridge

equipment outfit owing to by the IMO for it to be carried on board. This

papers attempts to establish its significance and the different ways in which

this system can contribute to improve the safety level of ships at sea. Both

the Reactive actions through casualty investigation and proactive actions

through performance monitoring of equipment experienced with the

vessels that installed this system are illustrated. The paper also contributes

that the VDR significantly improve marine safety where it used for training

of the personnel on board and ashore.

Keywords: Voyage Data Recorder, Marine Black Box, International

Maritime Organization.



20 | P a g e

The prediction of dry ports' cargo absorbing from

cross-border cargo's transactions using regression

models (case study: yazd dry port)

Saeid Sherafatipour1, Mahmoud Saffarzadeh2

1 Ph.d Candidate of Transportation Planning and Engineering, Tarbiat Modares

University; [email protected]

Professor of Transportation Planning and Engineering, Tarbiat Modares 2


Abstract

Today, in the wake of the increasing population in different parts of the world,

the commodities and the cargos need to move and transport is increased

compared to the past. Various infrastructures in various countries as well as

developing various types of facilities available, subject to the Rail Link is the

perfect solution to reduce costs, increase speed and total recovery utility has

converted the movement of goods. Dry Port is a multimodal hinterland

terminal or internal areas of the country that link to one or more port and a

number of specialized services provided to destinations overseas. In order to

plan for the creation or development of a dry port's infrastructure it is

necessary to forecast that the volume of cargo carried. The paper is to review

the methodology of linear models and the proposed model calibrated on the

information of the Yazd dry port. For this purpose, effective Variables on

cargo absorption identified based on the causal relations and co-linearity

effects were studied in a time series model. The results show that effective

variables in their models were not correlated. In autoregressive models, due

to the amount of the dependent variable observations in previous years, part

of the mentioned parameters were modeled. In this study, it's done by the

previous year's performance in origin-destination pairs.

Keywords: Dry Port, Sharing, Regression, Autoregressive, Demand.



21 | P a g e

Evaluation of using global positioning system (GPS) in

port operation and management

Shahnavaz Ayubi Ayubloo1,Abouzar Adljoy Safaei2,

Mohammad Bina Vajargahi3

1MSc in maritime transport, Port and marine administration of Khozestan

province; [email protected] 2MSc in maritime transport, Port and marine administration of Khozestan

province; [email protected] 3MSc in maritime transport, Port and marine administration of Guilan province;

[email protected]

Abstract

With Trade development and increasing importance of logistics process,

controlling and organizing of logistics process in every part of supply chain

stand in a special position. Port officials know this importance and continually

have tried to use modern and effective methods and technologies so that time

and cost could be saved and the process facilitated and accelerated. One of the

issues always considered with positive view is to use Information and

Communication Technology (ICT) and Intelligent Transport Systems (ITS)

in ports. In this paper we evaluate using Global Position System (GPS) as a

promotion and intelligent device for transport and handling system, in loading

and discharging equipment of general cargo terminal in Imam Khomeini Port.

Equipment Transferred data of GPS are available to inform terminal operator

instantaneously of process which makes optimum operation, number of

equipment and workers. These information can help also for better

management and control the whole of operation. Furthermore this process

causes to reduce the amount of final equipment operation and repairing cost.

Keywords: Logistics, Global Positioning System (GPS), General

Cargo Terminal, Terminal Operation.



22 | P a g e

Investigation on the routes of incoming vessels at quays

number 25 and 26 of the no.2 container terminal of

Shahid Rajaii port

Siyavash Filom1,Roozbeh Panahi2, Soheil Radfar3,Saeed

Khoram4

1MSc Student, Marine Structures Group, Tarbiat Modares University.

[email protected] 2Assistant Professor, Marine structures group, Tarbiat Modares University.

[email protected] 3 MSc Student, Marine Structures Group, Tarbiat Modares University.

[email protected] 4Expert at Strategic Studies Center of PMO, [email protected]

Abstract

Routes of incoming vessels at port basins is of great importance. Two main

reasons of this importance are safety and productivity of ports. Selected

vessel routes due to their low speeds to maintain safety, have significant

effect on vessel stopping time at port and ion the whole, increasing port

productivity (quay occupancy coefficient) and the approach of shipping

companies to the port. In this study, incoming routes of container ships to

quays 25 and 26 of second container terminal of Shahid Rajaii port have

been investigated. This port has 90 percent of container trade share in Iran.

The reason for this selection is the presence of 65-tonnes super post

panamax gantry crane (most modern gantry crane in the port complex) and

having the most draft (17 meters) among other container quays of the port.

Keywords: Shahid Rajaii port, Shahid Rajaii container terminal, vessels

traffic rote, AIS technology, Shahid Rajaii basin, Quays 25 and 26 of

Shahid Rajaii port.



23 | P a g e

Analysis of ships maneuvering in Shahid Rajaee port

by using AIS data

Qadir Allahmoradi1, Roozbeh Panahi2

1M.sc. Student of coasts ports and marine structures, Tarbiat Modares

University; [email protected] 2Assistant professor, Tarbiat Modares University; [email protected]

Abstract

Understanding maritime traffic patterns is key to prevent hazards threatens

maritime transport system. Also maritime traffic patterns in port could be

useful in optimization port activities. Automatic identification system

(AIS), is a useful tool for understanding ships positions. AIS time series

has been provided in millions of lines. In this paper in addition to

Introduction AIS data, manner of analysis of this data is provided. With

the help of AIS data, operation of quay 14th of Shahid Rajaee Port which

is considered for general cargo ships has been surveyed. AIS data makes

it possible to draw ships route. In order to filtering AIS data excel software

has been used and for drawing the route, MATLAB has been used. As

results, this research reveals that ships routs entering and exiting quay 14th

of Shahid Rajaee Port is hazardous and also ships entering quay 14th of

Shahid Rajaee Port, first berthed in another quay. With this results

understanding the importance of the necessity of optimization of port

activities for cargo ships and analysis of ship grounding at the opening of

the port is possible.

Keywords: Ship maneuvering, Shahid Rajaee Port, AIS data

National and international rules, standard and conventions Marine insurance Law of the sea Marine Labor convention

Rules and standards4 National and international rules, standard and conventions Marine insurance Law of the sea Marine Labor convention

Rules and standards4



24 | P a g e

Abandoned and submerged vessels as cultural

resources for Iran: nature and legislation

Ramin Adibi1, Najmeh Azizabadi2

M.A in Historical Archaeology, Marlik Higher education Institute, 1

[email protected]

[email protected] in Anthropology, University of Tehran, 2

Abstract

This paper aims to study on nature of maritime cultural resources and in

particular abandoned and submerged vessels. Also their cultural,

historical, archaeological, technological, aesthetics and educational values

will be emphasized. Moreover, ICOMOS and UNESCO convention to

protect and manage maritime cultural heritage are investigated. For

instance, Islamic Republic of Iran is a member of Nairobi International

Convention on the Removal of Wrecks and protecting underwater cultural

heritage. However, are these two conventions complement? What is the

assessment system to remove abandoned and submerged vessels? Results

of these investigations, lead us to have a logistic support and assessment

system prior to any economic, infrastructure and developing act in relation

to maritime cultural resources and in particular abandoned and submerged

vessels. This research is collected based on reviewing the result of previous

studies.

Keywords: Maritime culture, Abandoned and Submerged Vessels,

Legislation and assessment system.


Prevention of marine accidents Marine search and rescue Marine pollution Marine environment protection methods

Health, safety andenvironment in marine industry5



25 | P a g e

Studying and identifying of diving operations risks and

its remedies (case study: investigation of drowning

casualty of researching vessel master during diving

operation)

Hojjat Khosravi 1

1. MS in Maritime Transport, Ports and Maritime Administration of the Bushehr

province; Email:[email protected]

Abstract

Despite repeated efforts on building safety vessels and using advanced

equipment such as navigation equipment and safety equipment, marine

accidents still occur, resulting in personal injury and property damages and

pollution of the marine environment. Analyses of casualties in marine and

aviation transportation industries indicate that human error is a major

contributor in accidents and incidents. Recent researches in this field

broadly identify various types elements that contribute to human error.

Accordingly particular managerial measures and steps have been taken to

mitigate or control the severity of those errors. In this paper according to

the casualty resulted death of researching ship master, based on a

qualitative research and utilizing related casualty investigation models and

techniques, latent and contributory factors, which associated with human

error, will be identified and required corrective action will be suggested,

hence all can lead to prevent or reduce similar disasters and to increase the

safety of diving operations.

Keywords: Human Error, Marine Casualty



26 | P a g e

Evaluation requires of tsunami warning system on the

Makran coast

Mohammad Moradi, Maryam Soyuf Jahromi2

1Master Science of Envoronmental Science, Department of Environment,

University of Tehran; [email protected] 2 Assistant Professor of physical oceanography, Department of Marine Science

and Technology, University of Hormozgan; [email protected]

Abstract

In this Study, by the review of past events evidence, the possibility of

Tsunami occurrence was investigated in Makran area. Then, it was

identified the nearest real-time buoy on Makran area by using the

geographical positions of NOAA buoys, and their numerical analysis in

GIS software. It was checked the possibility of a system to connect these

buoys which two stations 23228 and 23226 had the potential in this regard.

According to the buoys position and the accessibility of their data, it could

be possible to establish such systems in this area by correct management

and processing of their data which it was found suitable the Deep-ocean

Assessment and Reporting of Tsunami (DART). The results of this

research suggests that the earthquake of Makran subduction zone was the

cause of 1945 Tsunami which shows the need of connecting Tsunami

Warning Systems to DART system more than ever. By the presented

alerting methods in this article, and due to the social and cultural features

of local people and of course considering the time of Tsunami occurrence

(day or night), it can be inserted Addressable Notification Alerts by

installing sensor on offshores, and Mass Notification Alerts on inshore and

near jetties.

Keywords: Tsuami, Tsunami Warning Systems, Makran coasts



27 | P a g e

Minimization of fire hazards in industry with

operational approach to law for the prevention of air

pollution by islamic parliament of Iran

Reza Karimzadeh1, Shabab Jahanbin2, Hossein Afraie3

1 Supervisor and Commander Firefighting unit in the khouzestan oxin steel co,

[email protected]

2 Supervisor of the environment management unit in the khouzestan oxin steel

co 3 Fire safety expert in the khouzestan oxin steel co

Abstract

This study has been done with the aim of analyzing the risk factors of

fire.This study has been done With the approach of the law of preventing

air pollution. The possible fires had High costs for industry. this research

done of the operational and research in three phases. In the first phase been

investigated Process industries and relevant law. In the second step were

identified effective strategic components the reduction of environmental

damage. In the third phase, The most effective strategic components were

evaluated utilizes the AHP model.

Keywords: fire, environment management, air pollution, AHP model.



28 | P a g e

Ranking of risks of container loading and unloading

operation in bandar imam khomeini by fuzzy TOPSIS

Heydar Zare1, Amir Dayerizadeh2, Abedodin Hashemi3



[email protected] 3 port expert and Land support, Bandar Imam Khomeini,

[email protected]

Abstract

With consider importance of container in maritime transportation and third

rank of Bandar Imam Khomeini in container operation, this research is

identify and rank of Risks of Container Loading and Unloading Operation

in Bandar Imam Khomeini by Fuzzy TOPSIS. This research done in two

stage. In first stage, Risks of Container Loading and Unloading Operation

identified by literature review. Then in second stage use of viewpoint of

15 person of container and HSE experts of Bandar Imam Khomeini, these

risks ranked by Fuzzy TOPSIS. Findings of research show.

Keywords: Risk, Container Loading and Unloading Operation, Fuzzy

TOPSIS.



29 | P a g e

A review of marine pollution effects on sea anemones

Pegah Javid1, Narges Amrollahi Biuki2*

1Ph.D student, University of Hormozgan, department of marine biology 2 Professor Assistant at University of Hormozgan, department of marine biology

Abstract

Sea anemones from phylum cnidaria are benthic organisms and live on sea

substrates, so water pollution can affect them easily. The marine

environments are the target of contaminations caused by a complex

mixture of metals and chemical materials from various anthropogenic

sources. The pollution could have mortal effects on sea anemones.

Although the anemones respond to increased metal exposure by closing

their tentacles and changing the activities of the enzymes, CAT (catalse),

GR (glutathione reductase), and CA (carbonic anhydrase), altered enzyme

activity and tentacle retraction of sea anemones, as well as decreased

zooxanthellae cell density could be observed responses over exposure.

Metal depuration and physiological recovery are dependent on both the

metal and the exposure concentration. Copper exposure can cause tentacle

retraction and increase mucus production in both symbiotic and

aposymbiotic anemones. Heavy metals especially copper can cause

cellular damages in the level of nucleus and DNA. Some species of sea

anemones accumulate heavy metals such as copper and are sensitive, as

effects were detected at environmentally relevant copper concentrations.

Likewise, they may be useful in biomonitoring copper polluted

environments.

Keywords: Sea anemones, contaminants, antioxidant enzymes, DNA

damage, bioaccumulation, symbiosis relationship.



30 | P a g e

Ranking of effecting factors on safety management

performance of Imam Khomeini port by AHP

Mahmood Hoseinzadeh1, Heydar Zare2, Abedin Hashemi3



[email protected] 3 expert of specialized terminals, Bandar Imam Khomeini,

[email protected]

Abstract

Ports changed from a simple environment for loading and unloading of

goods in near to bitch to complex industrial environment. Todays, size of

some ports reach a city size. This complex of port has different risks and

accidents that to prevent these risks, establishment Safety Management in

ports. Literature review of research show human resource, doing of

regulations and guidelines, support of superior managers of port, budget

and equipment effect on safety management performance. AHP technique

result shows support of superior managers of port, budget and doing of

regulations and guidelines are three important factors other than another

factors.

Keywords: Safety Management, Bandar Imam Khomeini, AHP.



31 | P a g e

In environmental ethics, effective idea for the intrinsic

value of preserving the marine environment

2Seyyed Jalil mousavi ,1Iran baraee

1 PhD of environmental engineering, expert of studies Khorramshahr port and

maritime 2 Student of PhD, Sociology of Economy and Development, expert of studies

Khorramshahr port and maritime

Abstract

Environmental ethics is a branch of applied ethics that considered ethical

issues of the environment. Two main approaches are between thinkers of

environmental ethics, God-centered approach and the other a secular

approach. Secular approach than environment, is take instrumentalist.

Among approach God-centered, existential attitude, essentialist attitude to

value the environment. The most of the ecosystem of the planet is covered

with water. So, the seas as one of the main environmental issue attempted

substrates. One of the fundamental functions registered in the documents

and international conventions on Ports and Maritime Organization , as the

main custodian of issues relating to international waterways , the issue is

preservation of the marine environmental.. This paper was written by a

comparative approach and documentary method that to show for more

effective marine environmental protection guidelines , the best of

practices, changing of attitudes and culture for people who are dealing with

the issue of the sea . Although theistic look at the issue of the environment,

can to reveal the intrinsic value of it, voluntary effort and effectively for

this issue.

Keywords: Environmental ethics, Approaches to environmental

protection, the attitude, marine, Ports.



32 | P a g e

AIM application in classification of offshore units

Saeid Kazemi

Senior Lecturer, Graduate School of Marine Science and Technology, IAU


Abstract

Historically, classification societies have certified assets based on their

own rules and guidelines as well as those of an international body, such as

International Maritime Organization. As water depths increases alongside

evolving technologies, offshore operators are looking to the class societies

for more help than ever. The aim of risk-based inspection (RBI) as part of

the Asset Integrity Management (AIM) is to develop an inspection plan to

help prevent or greatly reduce failures of the offshore unit compromising

its safety, the environmental or economic viability, by applying risk

assessment and mitigation technology. Effective inspection programs

including identification of required inspection frequency and practices are

to be specifically provided. It includes recommendations on inspection,

maintenance, and repairs. Under existing time-based classification

surveys scheme, designing, building, and operation of the offshore units

according to the enhanced standards in order to extend life and minimize

the costs do not bring any credit from classification societies. However,

under AIM and RBI plan with class societies, the survey and inspection

program can be adjusted based on current and expected future condition of

the unit. In this paper, the fitting together of classification, verification and

integrity processes of offshore structures will be studied. Meanwhile, the

benefits and challenges of AIM application in classification of offshore

units will be discussed.

Keywords: Marine Surveying, Risk-Based Inspection, Offshore

Structures, AIM.



33 | P a g e

Job safety analysis (human and equipment)

Mohsen Mohammadi Asl

CHIEF ENGINEER, IRISL ,[email protected]

Abstract

This paper will discuss about safety of seaman’s and equipment’s before

start of any job. With this regard safety and error of tasks were checked

and investigated. Which some of them are clear in marine notice or other

notice which are clear and published by IMO ,classification society or by

company DMA (casualty report, near miss,…) ,and after search of these

incident understood almost they have similar source as a human errors.

With this regards It can consider same instruction for control of incidents.

All hazards and errors which can occur during maintenance of equipment

(for worker and machinery) will be marked and make a plan for them.

Finally if these precaution and instruction were followed by staff causes

reduce the incident that means cost and expenses are reduced and

controlled. Risk assessment, the proactive and systematic assessment of

risks, is a standard element of most offshore and maritime companies’

safety management systems. Risk assessment is a powerful and flexible

tool to identify and control potential undesirable events that can have

safety, environmental, quality, or financial repercussions. The focus of

these Guidance Notes (prolusion) is risk assessment applied to work tasks,

commonly referred to as job safety analysis for human and equipment.

Keywords: safety, human, equipment, analysis, error, hazards,

maintenance.



34 | P a g e

Criteria for the selection and use of indicator species

for environmental monitoring

*2, Narges Amrollahi Biuki1Sana Sharifian

1PhD student, University of Hormozgan, [email protected] 2 Professor Assistant; University of Hormozgan, [email protected]

Abstract

Indicator species (IS) are used to monitor environmental changes, assess

the efficacy of management, and provide warning signals for impending

ecological shifts. In this study, a variety of indicator species, and criteria for

the selection, use and assessment of them by ecologists were investigated. The

results showed terms used to describe organisms in indicator species

research included ecological index, environmental index, indicator species,

bioindicator, and biomonitor, respectively. Twenty percent of research used

only a single species as an indicator; the remainder used groups of

species as indicators(60%). Nearly 50% of the taxa used as indicators

were animals, 70% of which were invertebrates. The most common

applications the use of indicator species were including respectively,

monitor ecosystem and environmental integrity (42%); assess habitat

restoration (18%); and assess effects of pollution (18%). The criteria for

use of indicator species based on previously cited research (40%), local

abundance (5%), ecological significance and/or conservation status (13%),

or a combination of two or more of these reasons (25%). This study

can be improve a comprehensive understanding from the use and recent

application of indicator species and also showed that the indicator species as

a biological tool have ability to detect sources of perturbations in ecosystem.

Keywords: Indicator species, Ecological indicators, Ecological

monitoring, Environmental changes.




35 | P a g e

New communication system for information exchange

in the maritime HF frequency band

1Soudabeh khabazsabet

1Export Communication, Boushehr ports and maritime organization, BPMO of

Bushehr, Bushehr, Iran, [email protected]

Abstract

Nowadays, HF radio telex use on ships to contact terrestrial

communication for data exchange between ships and coastal radio station.

We need to exchange data between ships and users in control station for

maritime search and rescue. Satellite communication systems use to

exchange of large amounts of data with high transmission rates , but the

problem of this system is high costs of equipment and services. We need

to use simpler and cheaper technologies for data exchange to replace radio

telex system. The aim of this paper, to study both systems, we could easily

replace the maritime NBDP (Narrow Band Direct Printing) telegraphy.

One system is based on OFDM (Orthogonal Frequency Division

Multiplex) protocol, the other one use the PACTOR - III protocol. We

compare details of two systems parameters such as the modulation method

and data rate. They can select optimal data exchange system according to

the specific features of maritime communications.

Keywords: PACTOR, protocol, OFDM , HF frequency.



36 | P a g e

Communication equipment in the global maritime

distress and safety system

Soudabeh khabazsabet1

1Export Communication, Boushehr ports and maritime organization, BPMO of

Bushehr, Bushehr, Iran, [email protected]

Abstract

Since the possibility of a floating nearby in an emergency situation, it is

also unlikely in international waters and coastal authority is limited relief,

today maritime industry should have the latest technology use modern

communications system. Advances in technology, particularly with the use

of wireless communications and satellite communications the way for the

establishment of a global system of marine safety and emergency paved.

Global maritime safety and emergency systems brought together ground

systems such as VHF, MF / HF and … satellite such as INMARSAT.

In GMDSS, all cargo ships weighing 300 tons or more and all passenger

ships in international waters in the system is known to be equipped, should

travel with standard radio equipment. Stations coastal search and rescue

immediately should be through satellite communication techniques and

ground informed and did search and rescue operations so without delay. In

this paper, marine equipment covered for vessels that are classified in

different regions.

Keywords: GMDSS, VHF, MF/HF, INMARSAT.



37 | P a g e

HSE performance management system in the marine

industries to help model Scorecard

Mehrnaz baniamam2, Mohammad hossien karimi2

1PhD student marine biology ,environment and food safety ministry of

agriculture, [email protected] 2Ms biotechnology , environment and food safety ministry of agriculture,

[email protected]

Abstract

Organizations have always tried to trade with losses seen in competition

and won their most profitable. Deployment Management System Health

and Safety Executive and applying the principles and requirements of this

standard in manufacturing and service organizations around the world are

constantly expanding and flourishing. The definition and implementation

of HSE management system in an organization, safety, health and

environment at the same time gives consideration. Given the importance

of the mentioned systems, the lack of a way to monitor, evaluate and

improve the system performance relative to each other will be reduced. the

elements in the system HSE, perspectives needed in the BSC and the

strategic objectives defined at any point of view.

Keywords: HSE, scorecard model, marine industry.




38 | P a g e

Management and environmental requirements of

discharge of contaminated ballast water of vessels of

territorial waters

3, S.Alireza Mirzahooseini2, Akbar Shahrbaf1Ali Sheykhbahaei

M.Sc. of Marine Structures, INIO, [email protected]

[email protected] prof. of Naval Architecture, INIO, 2

Assistant prof. of Environment, Azad University , [email protected] 3

Abstract

Today, the issue of transfer of harmful aquatic non-native species from

ships discharging ballast water into the sea, is a global problem requiring

a global and regional cooperation and consistent performance. One of the

mainly methods of transfer of invasive species, in addition to aquaculture

purposes, is intentional or unintentional transport of the unwanted species

through ships, buoys, fishing and recreational boats. Hence, the concerned

authorities should monitoring properly manage the Ballast Water through

enforcing regulatory requirements, to reduce or avoid the dangers of

transferring them. In order to cope with the pollution caused by invasive

non-native aquatic species, three methods are used: Reception and

processing of ballast water in ports, processing and exchange of ballast

water in ships' ballast water on the way. Various technologies for

purification ballast water of ships in ports are used, which are: Filtering,

creating an eddy and swirl, thermal method, the use of chemical

disinfectants, through UV radiation, using ultrasonic waves, water

electrolysis and accelerated electrons. Mentioned methods, are proven

methods that ships use them to reduce the risk of marine ballast water.

Keywords: Ballast water, Environmental, Non-native species, Buoys,

Environmental management requirements.




39 | P a g e

Assessment and management of the environmental

technical and legal strategic component in this current

a fifth principle of constitution of the organizations

Sh.jahanbin1, k.sabeti2

1 Supervisor of the environment Protection unit in the Khuzestan oxin steel co,

[email protected]

2HSE management in the Khuzestan oxin steel co; [email protected]

Abstract

This study has been done by aimed management of the environmental

technical and legal strategic component in this current a fifth principle of

constitution of the organizations. The importance of environmental

protection the Holy Quran says God created you from the earth and Land

remediation has entrusted to human. Therefore, this study aimed to above,

operational research has been done in three phases. In the first phase was

studied an studies relating to the sanctions and legal standards and the

environmental resulting from industrial processes. Then, using Analytical

Hierarchy Process (AHP-Model) were identified the most efficient

deployment of strategic components technical and legal in the fifth

principle of constitution of the organizations. Finally, to achieve

quantitative results, most notably the factors were analyzed using TOPSIS

model. The above process can be used as a strategic map prioritized and

weighted approach to environmental protection, can be used in

organizations.

Keywords: fifth principle of constitution, environment, multi-criteria

decision-making models, strategic management.

Marine hydrodynamic Oceanography Marine meteorology Marine parameters measurement Hydrography

Oceanographicand meteorological Conditions6 Marine hydrodynamic Oceanography Marine meteorology Marine parameters measurement Hydrography

Oceanographicand meteorological Conditions6



40 | P a g e

Investigation of wave-mud interaction with viscoelastic

behavior in SWAN third generation model

Mostafa Beiramzadeh1, Seyed Mostafa Siadatmousavi 2

1M.Sc., Iran University of science and Technology;

[email protected] 2Assistant Professor, Iran University of science and Technology;

[email protected]

Abstract

At numerous locations in coastal areas in the world, fine sediments

exchange to cohesive sediment under appropriate condition of salinity and

temperature so called mud, actually Due to wave traveling and its imposed

load over the muddy bed fraction of mud layer fluidized and starts to move.

Previous Investigations depicted that Wave-mud interaction can occurs in

small spatial scale almost in a few wave lengths, this interaction causes

wave damping.

Viscous behavior was implemented in third generation models for

simulating wave dissipation. The objective of this study is implementing

mud viscoelastic behavior in SWAN and evaluating its performance. The

Results of exchanged codes indicates that viscoelastic model can

reproduce wave spectrum and wave energy dissipation as well.

Keywords: cohesive sediment, mud, fluidized mud, wave dissipation,

viscoelastic sediment



41 | P a g e

Marine forecasting systems in caspian sea, Persian gulf

and Oman sea

Aliasghar Golshani1 , Alireza Vaselali2, Said Mazaheri3

1MetOcean Expert, Beta Group Consulting Engineers;

[email protected] 2Head of Design and Technology Department, Beta Group Consulting

Engineers; [email protected] 3Research Assistant Professor, Iranian National Institute for Oceanography and

Atmospheric Science; [email protected]

Abstract

There are several global marine forecast systems based on large scale

regional data covering Iranian seas which are freely available on their

websites. They are also several local marine forecast systems in Iranian

waters. This paper performs an inter-comparison among different marine

forecasting systems in Iranian seas in order to evaluate the accuracy and

difference between them and give a proper ground for further investigation

and research in this crucial issue. For this purpose, the results of two

forecasting system in several points in the Persian are compared and the

reason of differences are investigated.

Keywords: marine forecast, wind, wave, current, Persian Gulf, Caspian

Sea, Oman Sea.



42 | P a g e

Simulation of wind-wave generation in north of

Queshm Island in maximum of annual wind speed

Mehdi Mohammadmehdizadeh1, Mohammad Pakhirehzan2,

Sajedeh balouchi3, Faegheh Eslami4

1Ph.D of physical oceanography, University of Hormozgan;

[email protected] 2Ph.D student of physical oceanography, University of Hormozgan;



[email protected]

Abstract

In this study, to evaluate wind waves in north of Queshm Island, MIKE

21/3 COUPLED MODEL by MIKE software has been applied for this

investigation. Solution of equation of waves performed on irregular

triangular grid. The pattern of waves modeled for a period in maximum of

annual wind speed and dominant direction of waves. Refer to access data,

wave height in the southern part of study area higher than north of it. Result

of model show that the average of wave height is up to 0.75 m and average

of wave speed up to 0.5 m/s. dominant pattern of wave and wind direct to

west.

Keywords: wave, Queshm island, MIKE.



43 | P a g e

Evaluation of the Indian ocean fCO2 using SOCAT

dataset

Danial Ghaderi1*, Maryam Rahbani2

1Bachelor of Oceanography, University of Hormozgan;

[email protected]

Assistant Professor of Faculty of Marin science and Technology, University of 2

Hormozgan; [email protected]

Abstract

Human activities produce large amount of CO2 into the atmosphere. The

increase of CO2 in the atmosphere means the increase of the mole fraction

of CO2, which causes the increase of greenhouse gases and continuous

changes in atmospheric components. This is the reason of the temperature

increment. Due to the continual exchange between the atmosphere and sea

surface, the increase of CO2 in the atmosphere is the reason of its increase

in the oceans which is the cause of ocean acidification.

In this study, the recorded CO2 data of the southern Indian ocean from

SOCAT web page has been used to evaluate the increase or decrease of

the CO2 during decades of 1984, 1995, 2004 and 2015. It was found that

15 stations increment during 30 years and 15 other stations of the stations

experience in 2004 Increased compared to 1984. It was also found that the

highest amount of fCO2 is 408.517 uatm in 2015 and the lowest is 269.469

uatm in 2004 at the southeast Indian Ocean.

Key words: SOCAT, fCO2 , Acidification, Indian Ocean, carbon

dioxide.



44 | P a g e

Study of the coastal sediments transport mechanism in

the Tyiab estuary

Monirehalsadat Sadatkiaee1

Departmentsof Physical Oceanography, Science Branch, Islamic Azad 1

University/ Tehran; Iran.

[email protected]

Abstract

Estuaries are brackish and freshwater interaction basins with a short

lifetime usually formed in the river mouth in a narrow margin between the

land and sea. The shape and extension of estuaries continuously change

due to some processes like erosion, sedimentation, and sea level

fluctuations. In the present study, the coastal sediments transport

mechanism in the Tyiab estuary was examined by Boussinesqe Wave

(BW) module of the mike 21 software. Results indicate that cross shore

waves without any tidal current leaves long shore sediment loads and form

a shoal region in the mouth. The flood current in the presence of cross

shore, or angled relative to the coast waves, moves toward the coast with

a considerable sediment load. During the state change from the flood to

ebb, a part of sediment load, mainly the suspended load, deposits around

the highest tidal level. In the combined state, the sediment transported from

the sea toward the estuary is negligible. The shoal region extends around

the estuary mouth like an arc. While the southern tab elongation of the

estuary entrance mouth toward the north and west indicates that the

dominant direction of the sediment transport is from southeastern to the

northwestern, which is the predicted dominant direction of the sediment

transport for the harbor site.

Key words: Sediment transport, tiyab estuary, Mike.



45 | P a g e

Water level fluctuations of the Caspian sea (past,

present and future)

Homayoun Khoshravan1، Boshra Vafaie2

[email protected] Professor, Water Research Institute, 1

[email protected], Islamic Azad University (IAU), 2

Abstract

Rapid fluctuations in water level of the Caspian Sea play an important role

in determining the risk of attrition, adverse environmental consequences,

destruction and drying of coastal areas, wetlands and bays. Assessment of

changes in Caspian Sea water level in the past, present and future is the

goal of this paper. Water level fluctuations have been investigated since

the Pleistocene-Holocene epochs up to now and the factors which affecting

water level fluctuations and the height of fluctuation variation has been

studied. Human activity impacts on water regime variation are assessed

and due to the growing trend of global warming, future fluctuations in

water level are predicted. The results show that climatic factors are the

most important affecting parameters on water level variation during the

Holocene epoch. Since late Pleistocene epoch to end of Holocene epoch,

the water level has changed about 150 meters. If global warming

continues, Caspian Sea water level will be decreased approximately more

than 3.5 meters by 2100.

Keywords: Fluctuations, Caspian Sea, Pleistocene & Holoceine epoch,

Global warming, Human activities





46 | P a g e

Methodology and algorithm of coastal monitoring, case

study: northern makran coasts; approach to

dentification of Oman sea climate, solution for

sedimentation problems and development of coastal

zones M. Bagheri1, M. R. Allahyar2, M. H. Nemati3, M. Shafieefar4, A.

Pouyamehr5

1,2Msc in marine structures Eng., Ports and Maritime Organization of Iran;

[email protected], [email protected] 3,5Msc in physical oceanography., Ports and Maritime Organization of Iran;

[email protected], [email protected] 4Professor of civil and environmental Eng., University of Tarbiat Modares;

[email protected]

Abstract

This paper will describe the stages and targets of general coastal monitoring.

Indeed the proceedings of these types of projects would be represented so as to

mention an overview of wave climate identification and analysis of sea

parameters. Considering the main idea of this study to be focused on Makran

coasts, a complete description of complexities and challenges of implementation

of coastal monitoring procedure in Makran will be discussed. Also the results of

this study and their effect on future studies and improvement of marine projects

will be reported. The outputs of coastal monitoring completely depend on our

requirements and the phenomenon the effective parameters of which make us

define such a project. Fortunately the goals of present study are the same as

general approach of coastal monitoring projects so that many issues such as

shoreline changes pattern, coastal zone geomorphology, shoreline classification,

surf zone identification and determination of hazard zone due to hurricane waves

are followed. These valuable results will be gained by means of data gathering,

field measurements and numerical modelling which are the fundamental

principles of all monitoring projects.

Keywords: sea climate, coastal monitoring, marine parameters measurement,

numerical modeling, wind and wave hindcast, Makran coasts, Oman sea, coastal

classification.



47 | P a g e

Sub-inertial oscilations due to cyclone Ashobaa

Mohammad Hossein Nemati1, Kamran Koohestani2,

Mohammad Bagheri3, Zohreh Hajisalimi4

1 Master of Civil Engineering, Iranian Ports and Maritime Organization,

[email protected] 2 Master of Civil Engineering, Pars Geometry Consulting Engineers,

[email protected] 3 Master of Civil Engineering, Iranian Ports and Maritime Organization,

[email protected] 4 Master of Hydraulic Engineering, Iranian Ports and Maritime Organization,

[email protected]

Abstract

Tropical cyclones are a tremendous source of wave energy and

continuously transmit this energy into ocean when they occur. Since wind

field almost oscillates in inertial period, these storms are a major source of

inertial and sub-inertial waves.[1] Such Oscillations are reported in various

field observations. Some of investigations about this issue are as follows:

Elsberry and Shay investigated hurricane Fredric [3], Brooks also studied

hurricane Allen [4], and Teagu et al. evaluated hurricane Ivan to detect

such oscillations. One of the latest reports is about hurricane Gonu

performed by Wang et al. [6]

In this article it is aimed to detect sub-inertial and near inertial oscillations

triggered by cyclone Ashobaa using current direction data in various

depths. Wavelet Analysis is deployed to meet the target. The results show

a correlation between depth and corresponding period of oscillations.

Keywords: Sub-inertial Oscillations, Cyclone Ashobaa, Makran Coasts



48 | P a g e

Three dimensional modeling of wind-induced currents

and study its effects on salinity and temperature

distributions

Ardeshir Farhady1, Zohreh Heydari2,

1PhD student, Physical Oceanography, ASMERC IRAN;

[email protected] 2PhD student, Khoramshahr University of Marine Sciences and Technology;

[email protected]

Abstract

A basic three-dimensional finite difference hydrodynamic oceanic model has

been developed using primitive equations based on the earth's spherical -

vertical coordinate with eleven levels equivalent to five layers to study the

dynamics of wind-driven currents and its effects on the distributions of

salinity and temperature. In this basic model we consider a rectangle area

which is located between 24 ̊ to 30̊ N, and 47 ̊ to 58 ̊ E with constant depth of

120 m, which is the same location as the Persian Gulf, with the maximum

depth of 120 m, somewhere near the north Iranian coastal waters.

In this model, the horizontal finite difference scheme is staggered and, the

model uses a modified Arakawa C grid with the two-step Lax-Wendruf

scheme and Dufort-Frankel scheme to simulate the advection terms and

diffusion terms, respectively. The horizontal velocity fields are simulated

using a steady bellowing wind over the area for four days with the speed of

10 m/s and direction 270 ̊. The Results of this model has shown that, the

mixing processes are occurred through the layers of sea water during 4 days

of wind blowing, and the column of the sea water are being isothermal and

isohaline.

Keywords: three-dimensional modeling, wind-induced currents,

distributions of salinity and temperature

https://scholar.google.com/scholar?hl=en&as_sdt=0,5&q=A+basic+three-dimensional+finite+difference+hydrodynamic+oceanic+model+has+been+developed+using+primitive+equations+based+on+the+earth%27s+spherical+-vertical+coordinate+with+eleven+levels+equivalent+to+five+layers+to+study+the+dynamics+of+wind-driven+current






49 | P a g e

Calculate the bearing estimation accuracy from the

time delay accuracy in passive sonar

Mohammad Vahedian darghahi1, Mohammad Hedayati

Khodayari2, Mehdi hashemi3

1 MSc Communication Systems, Department of Electrical Engineering, Sadjad

University of technology; [email protected] 2Ph.D. student, Control, Department of Electrical Engineering, Ferdowsi

University of Mashhad; [email protected]

3 MSc Communication Systems, Department of Electrical Engineering, Sadjad

University of technology;[email protected]

Abstract

Any target in underwater can be characterized by at least two parameters,

bearing and range. Passive sonar, can detect the target only bearing. Sonar

designers, according to the technical specifications as well as

environmental conditions and expected performance system utilizes sonar

equations can design sonar antenna. But parameters such as uncertainty in

the measured environmental parameters, dimensions limitations in the

design of sonar, the type of sonar arrays and output sonar testing, do not

meet initially designed to be completely certain and hence has a range of

error detection sonar side to exist and therefore the parameters of accuracy

and resolution sonar targets one of characteristics to measure and compare

performance relative to the underwater target detection applications

considered. In this paper, we want to calculate the bearing estimation

accuracy from the time delay accuracy in passive sonar, in a case study,

the target accuracy estimation for linear and circular sonar calculate.

Keywords: Passive sonar, accuracy estimation bearing, accuracy time

delay.



50 | P a g e

Numerical simulations of the intrusion layers of the

Persian gulf outflow in the Oman sea

Eram ghazi1, Aliakbari Bidokhti2, Mojtaba Ezam3

1PhD, Islamic Azad University, Science and Research Tehran branch;

[email protected] 2Prof, Institute of Geophysics, University of Tehran; [email protected] 3 PhD, Islamic Azad University, Science and Research Tehran branch;

[email protected]

Abstract

In this paper the observational data and a three dimensional numerical

model ROMS are used to simulate of thermohaline front in the Oman sea.

The result of this study show that the intrusion layers are between depths

100-45m. It reaches its maximum at 250 meters From 450 meters depth,

the stratification is stable. The average salinity in the Oman Sea is

relatively constant throughout the year is about 37.5 psu. While the

temperature varies with the seasons. The maximum and minimum density

respectively are in winter and summer. The dominant circulation pattern is

an anti-clockwise and a clockwise Paddy in winter and an anti-clockwise

and a clockwise respectively upstream and downstream of the Cape of Ras

al-Hamra in summer in the Oman Sea.

Keywords: Intrusion Layers, thermohaline front, Persian Gulf outflow.

https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=5&cad=rja&uact=8&sqi=2&ved=0ahUKEwiXmfW7y67OAhXIK8AKHeW3B-MQFghCMAQ&url=http%3A%2F%2Firsc.ut.ac.ir%2F&usg=AFQjCNEQ4oyDg3exH5fCtCIGbJPgCzdy4Q&sig2=ldM0Fauq86Niilo-2GdiwQ&bvm=bv.129391328,d.ZGg



51 | P a g e

A study of double-diffusion in the Oman sea

Eram ghazi1, Aliakbari Bidokhti2, Mojtaba Ezam3

1PhD, Islamic Azad University, Science and Research Tehran branch;

[email protected] 2Prof, Institute of Geophysics, University of Tehran; [email protected] 3 PhD, Islamic Azad University, Science and Research Tehran branch;

[email protected]

Abstract

In the Oceanic fronts due to differences in temperature and salinity at

different depths observe diffusive convection. In this paper using CTD

data study salt fingering and double diffusion convection in the frontal

zone in the Oman Sea. With the entrance of the Persian Gulf outflow to

the Oman Sea, create a salty and warm lens. The results show that the

structure of intrusion layers detect from a depth of 100 to 340 meters in

spring and summer. It reaches its maximum at 250 meters. From 340

meters depth, the stratification is stable. The Persian Gulf outflow in the

Oman sea create two boundaries, one of them in top, cold and fresh water

on warm and salty water, another boundary is lower, warm and salty water

on cold and fresh water. In the frontal zone of Oman sea both of them occur

salt fingering and double diffusion. They play important role in

transmission temperature and salinity. The warm and salty lenses indicate

double diffusion in the top and salt fingering in the lower boundary layer.

Keywords: double diffusion, salt fingering, thermohaline front.

https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=5&cad=rja&uact=8&sqi=2&ved=0ahUKEwiXmfW7y67OAhXIK8AKHeW3B-MQFghCMAQ&url=http%3A%2F%2Firsc.ut.ac.ir%2F&usg=AFQjCNEQ4oyDg3exH5fCtCIGbJPgCzdy4Q&sig2=ldM0Fauq86Niilo-2GdiwQ&bvm=bv.129391328,d.ZGg



52 | P a g e

Characteristics comparison of positive estuaries

(including: two dimensional circulation, water

stratification, richardson number, internal froude

number) by using of numerical modeling.

Maryam Mohammadsalehi1, Mojtaba Ezam2

1MSc Student of Physical Oceanography, Science and Research Branch, Islamic

Azad University, Tehran, Iran 2Assistant Professor, Science and Research Branch, Islamic Azad University,

Tehran, Iran

Abstract

Estuary is a region in mouth of river and between sea and land. Fresh water

and its suspended sediments interred via rivers to estuary including a huge

amount of mineral and nutrients that have ecological influence on coastal

regions. So estuaries are investigated from different point of views. In this

work positive estuary characteristics such as two dimensional circulation,

density structure, stabilityin water column, internal Froude number and

Richardson number were studied by using numerical modeling. The

estuary has 120 meters of length and various width and depth. In this study

tidal volume (V) is constant but river discharge (R) varies in Wide range

and therefore various situation of (R/V) were studied. Results show if R/V

ratio equal 0.01, 0.16 and 1.9, the estuary form correspondingly as

vertically-mixed, saltwedge and highly stratified estuary. Far about 40 km

from mouth of river in three type mentioned estuary, water age increases

highly that show this region of estuary in not suitable for discharge of

pollutants. Generally Richardson number in highly stratified estuary is

more than other type of estuary, because in this situation water column

stability (increasing factor for Richardson number.) is more than

vertically-mixed estuary and shear flow (decreasing factor for Richardson

number.) is less than saltwedge estuary.

Keywords: Positive estuary, Stability, Richardson number, Internal

Froude number



53 | P a g e

Carbonate chemistry in the Persian gulf

(results of the PGGOOS expedition, 2013)

Abolfazl Saleh1, Ali Mehdinia2, Ali Hamzehpour3,

GholamRasoul Baskaleh4, Neda Sheijooni Fumani5, Sara

Gholamipour6 1Faculty member, Iranian National Institute for Oceanography and Atmospheric

Science (INIOAS); [email protected] 2Faculty member, INIOAS; [email protected]

3,4,5,6Researcher, INIOAS; [email protected], [email protected],

[email protected], [email protected]

Abstract

Basic hydrographic properties of seawater were evaluated in the Persian Gulf

during winter and summer on PGGOOS Expeditions, 2013. Here, we describe

the state of chemical properties of water column of the Persian Gulf in an axial

section from Strait of Hormuz to the northwestern end of the Gulf. The surface

current with initial salinity of 36.5 and total alkalinity of 2394 µmol/kg is carried

northwards, then its salinity and alkalinity gradually increases to more than 40.7

and 2577 µmol/kg, respectively. The results showed that the normalized

alkalinity and total inorganic carbon (nTALK and nTIC) of seawater decreased

due to chemical and biological precipitation of carbonate minerals in the Persian

Gulf in comparison with the inflowing surface water. The inflowing surface water

had high nutrient concentration due to upwelling in the Gulf of Oman. Physical

and chemical properties of water showed that during winter in the west Persian

Gulf the water column was well mixed while in the eastern Persian Gulf

stratification observed. Aragonite saturation state decreased with increasing

depth in the whole area and was at the range of 2.54-5.27 and 2.26-4.39 in

summer and winter respectively. Results showed that temperature and pH were

the most important variables controlling the seasonal variation of the aragonite

saturation state in the region. Surface dissolved oxygen concentration was almost

homogeneous in the whole studied area decreasing down to 1.39 mg/L in deep

waters of the middle of the Gulf.

Keywords: Persian Gulf, Carbonate chemistry, Nutrients, Aragonite

saturation






Design methods Ship hydrodynamics Ship maintenance and repair Recycling methods Equipment, machinery and propulsion systems

Ship design and construction7 Design methods Ship hydrodynamics Ship maintenance and repair Recycling methods Equipment, machinery and propulsion systems

Ship design and construction7



54 | P a g e

Production of hypalon rubber for generating

polymeric boat and investigation of properties

Mohsen khosravi babadi1, Ehsan shahrokhi mousavi2

1 marine engineering departmant¸Amir kabir university of

Tehran;[email protected] 2 chemical engineering departmant¸Bahonar university of

kerman;[email protected]

Abstract

In order to convert the postconsumer polyethylene to a valuable product,

chlorosulfonation of virgin and highly degraded polyethylene has been

carried out in the solution phase under atmospheric pressure. Produced

chlorosulfonated polyethylene samples from virgin and degraded HDPE

are compounded and cured at different temperatures and their mechanical

properties are determined. The results show that degradation of used

polyethylene does not have noticeable negative effects on the final

mechanical properties of produced chlorosulfonated rubbers. Therefore, it

can be concluded that chlorosulfonation can be considered as an effective

new method for polyolefin recycling.

Keywords:Chlorosulfonation ̧ Mechanicalstrength Polyethylene ̧

Recycling¸ Rubber.



55 | P a g e

Experimental investigation of marine engine (TD43) by

using diesel and biodiesel fuel

Mohammad reza ahmadi moghadam1, Liya hooshyary2, Said

farahat3 1 Master student of mechanical engineering, sistan and balochestan University;

[email protected] 2 Master student of mechanical engineering, alzahra University;

[email protected] 3 Full professor of mechanical engineering, sistan and balochestan University;

[email protected]

Abstract

In this paper, a variable compression ratio marine engine (TD43) which

uses diesel fuel and biodiesel has been investigated experimentally.

Biodiesel fuel is renewable and non-toxic and this is an advantage for

floating offshore tank leeks. At first in five rounds of engine (1000rpm,

1250rpm, 1500rpm, 1750rpm and 2000rpm) and two compression rate of

16 and 18, amount of power and torque has been measured by using diesel

fuel. It is observant that the amount of power output increased by

increasing engine round and compression ratio. The most amount of power

6kw obtained for 18 compression ratio and 2000rpm engine round. About

1750rpm and then reduced gradually. Then the power output is obtained

by using two types of biodiesel (15% and 25%) in two compression ratio

of 16 and 18 and three engine round of (1000rpm, 1500rpm and 2000rpm)

and the result were compared with the results showed that using biodiesel

increased power compared to the diesel fuel.

Keywords: laboratory investigation, diesel and biodiesel fuel, power

output and engine torque, variable compression ratio marine engine

(TD43)



56 | P a g e

Hydrodynamic performance of ducted propellers using

vortex lattice method

Ehsan Yari

PhD of Hydrodynamic, Maleke-Ashtar University of Technology, Esfahan,

Iran, [email protected] Yari

Abstract

When due to ship stern or space limitations and other hydrodynamic

parameters using of propeller with large diameter is not possible, ducted

propeller system be used, which increases the thrust and efficiency. Other

features of this propulsion system are uniform flow and maneuverability.

In this article hydrodynamic performance of duct propeller using MPVL

code development is studied. The vortex distribution is done on the surface

elements along chord-wise and cross-flow effect is neglected. The gaps

between the tip of propeller blade and duct, including special parameters

that are considered in this analysis and analytical methods have been used

to eliminate singularities. Hydrodynamic efficiency of duct propeller in

several different advance coefficients examined under open water

condition and increases efficiency is shown between 10-15% compared to

conventional propellers.

Keywords: Ducted propeller, Hydrodynamic efficiency, Vortex lattice

method.



57 | P a g e

Modification of semi-submersible and supercavitating

propeller to prevent engine overloaded on high speed

craft

Abasi, J1, Pakian bushehri, M2, Hashemi, S.J3

1MS Marin Engineering , Shahid Mahallati Industrial Shipyard;

[email protected] 2MS Mechanical Engineering, Shahid Mahallati Industrial Shipyard;

[email protected] 3Ms Marin Engineering, Shahid Mahallati Industrial Shipyard;

[email protected]

Abstract

Due to the high efficiency of surface propellers at speeds above 35 knots,

this type propellers one being used on high speed craft for racing and

military performance. Mismatch between engine torque and propeller

torque, cause engine overloaded or overspeed. One of the ways to resolve

the overloaded state, is propeller modification. In this paper, propeller

diameter and expanded area is discussed. Where 3 percent and 3.2 percent

of the diameter and expanded area is reduced respectively. After

correction, 50 rpm was added to the rpm engine and 1.8 knots of Max

speed reduced. Also planing rpm increased from 1700 to 1750. The results

are satisfying considering boat technical specification. The method can be

optimized for more favorable conditions.

Keywords: Modification Propeller, semi-submersible Propeller,

Overload Rotate, Overspeed Rotate.



58 | P a g e

Investigation the roll motion of planing crafts in

oblique waves

Hamid Zeraatgar1, Ali Rayatpisheh2, Hossein Tahmasvand3,

Hassan Ghassemi4

1Associate Professor, Department of Maritime Engineering, Amirkabir

University of Technology, [email protected] 2Msc, Department of Maritime Engineering, Amirkabir University of

Technology; [email protected] 3 PhD, Department of Maritime Engineering, Amirkabir University of

Technology; [email protected]

4 Professor, Department of Maritime Engineering, Amirkabir University of


Abstract

The roll motion of planing craft in regular wave is the subject of this study.

In this paper, a mathematical model of rolling motion for planing craft in

waves is developed. The modeling is based on the Zarnick method in

which forces acting on a planing craft is summation of the forces on

sections of the craft. It is assumed the wave forces of rolling motion

composed of radiation forces, Froude-Krylov forces and water entry

forces. The three set of forces are formulated for the planing craft. The roll

motion is developed based Newton’s second law. A computer code has

been developed. For a model size of planing craft, the code has been used

for calculation of roll motion in different headings angles. Although, there

is no published results for comparison and verification but, the result of

this calculation is quite promising. The Authors are working on the method

and expect further development in near future.

Keywords: Roll motion, Planing craft, hydrodynamic coefficient.




59 | P a g e

Dry dock, useful dock for maintains and building of

ships in khoramshahr

Fateme zolfagharnasab1, Hossein Parvareh2, Mehdi Zayerchi3

1M.S naval architect, Persian Gulf University; [email protected] 2 M.S naval architect, Persian Gulf University; [email protected]

3B.S. Mechanic, Arvandan ; [email protected]

Abstract

Navigation industry development and increase in volume at the ports of

the country, entails providing facilities, equipment and technology rich and

up to date in the manufacture, Maintenance and admission is floating. The

most important features can be certain space and equipment required for

the repair and modernization of ships and floating cited. Massive repair

dock in coastal zones so that the ability to communicate securely with the

body of water in order to have the operation of loading and unloading

operations. Along with mobile cranes with a very high capacity (depending

on the characteristics dock repair), including the facilities are.

That's why we decided to go with a case study on one of the dry dock called

sanat darya ship building dry dock located in Khorramshahr, the

importance of this issue more than before to show. The structural stability

calculations, after describing the dry dock, geotechnical survey site,

geographical location and other basic information of the dry dock, consider

the plan in question.

Keywords: Navigation, Maintenance, dry dock, repair dock



60 | P a g e

Evaluation of the immersion ratio effect on the

performance of the semi-submersible propeller

Ehsan Yari

PhD of Hydrodynamic, Maleke-Ashtar University of Technology, Esfahan, Iran

Abstract

Analysis of the semi-submersible propeller due to the diversity and

complexity of flows, geometric parameters and come up with different

physical phenomena such as the free surface treatment, spraying water,

ventilation, surface tension and so the complexity is high. In this article for

a sample of the semi-submersible propeller geometry determines with

constant taking into account many parameters and factors, the effect of the

thrust of the propeller immersion was studied and analyzed. For the semi-

submersible propeller section profile, a commercial profile is used.

Considering the effect of immersion in the semi-submerged propeller, the

propeller in fixed speed and flow in different immersion depth has been

investigated. According to obtained data with increasing immersion, raise

the multiplier can be seen in the semi-submersible propeller thrust.

Keywords: Semi-submersible propeller, Immersion ratio parameter,

Propeller Thrust.



61 | P a g e

Determining the values of elastic modulus and flextural

strength by the combined method of three point

bending test, analytical relations and finite element

simulation

Hamed Asadi1

1Master of Science in Mechanical Engineer, Isfahan University of Technology;

[email protected]

Abstract

Three point bending test is one of the mechanical tests that is used in

different fields such as measuring the flexibility of parts in the process of

designing. In order to formulizing the amount of flexibility by the elastic

relations, a parameter named flextural strength is obtained. The part which

is studied in this article is a bakalite insert with the glass fibers that is a

part of seperating electrical connectors. The flexibility of this part is very

important in order to prevent the break of this part. Due to that in three

point bending test we can just obtain the amount of extention for the certain

amount of actuating force, so that determining the elastic modulus and

flextural strength of the material is imposible. For this purpose, we can use

a combined method of bending test, analytical relations and finite element

simulation. In this article, the steps of this simulation with ABAQUS

software, analyzing the results and the method of using this simulation to

determine the elastic modulus and flextural strength for the decided part in

three tested samples is explained.

Keywords: three point bending test, flextural strength, elastic modulus,

finite element simulation



62 | P a g e

Hydrodynamic coefficients of a surface piercing

propeller in different immersion

T.Aliakbari1, T.Hadad2, M.Karbalaee akbar3, A.Moghaddas

ahangari4

1Taghi Aliakbari, National Iranian Marine Laboratory;

[email protected] 2Toktam Hadad, National Iranian Marine Laboratory;

[email protected] 3Mohamad Karbalaei akbar, National Iranian Marine Laboratory;

[email protected] 4Aliasghar Moghaddas ahangari, National Iranian Marine Laboratory;

[email protected]

Abstract

Performance review of Surface Piercing Propeller (SPP) in condition of

operation envierment,is an effective factor in design or selection of

propeller to achieving high efficiency.Among these factors can pointed to

the diameter, RPM, number of blades, advance velocity, depth of

immersion, Thrust angle and number of propellers and their interaction on

each other.

In this article has paid to the scrutiny coefficients of SPP hydrodynamic at

various depths based on experimental results.Making of propeller and

testing in a National IranianMarine Laboratory (NIMALA) by Open Water

dynamometer, has been carried entirely under ITTC procedure out.Finally

relationships between hydrodynamic coefficients and immersion depth,

in the mathematical expression are express.

Keywords: Surface Piercing Propeller, Open Water Test, Immersion

Depth, Hydrodynamic coefficients ofPropeller, National Iranian Marine

Laboratory.



63 | P a g e

Analysis and kinematical and dynamical optimization

of propulsion system of The tuna fish robot through

genetic algorithm and strouhal number

Mohamad Hosein Salimi1, Mostafa Karimian2,

1M.S Student, Tehran University; [email protected] 2Graduated Student, Tehran University; [email protected]

Abstract

In this paper the Tuna fish robot that inspired by nature based on the

Carangiform model is studied. The kinematical and dynamical

optimizations are presented. In the kinematical optimization, propulsion

mechanisms, the numbers of the active degrees of freedom, rigidity of the

tail and link length ratio are optimized. To optimize links, genetic

algorithm is used. In the dynamical optimization, due to the limitations of

multiple tests, the theory of Mr. Lighthill is used. This theory is validated

by experimental testing. Next, the impact of the Strouhal number on the

efficiency is studied. Finally two approaches are presented which can

increase the efficiency.

Keywords: Optimization, Genetic algorithm, The Tuna fish robot,

Strouhal Number, The tail rigidity



64 | P a g e

Influence of longitudinal position of outriggers of

trimaran on hydrodynamic resistance of NPL series by

maxsurf software

Davood Ahmadi Amin Abadi1, Reza Kariminejad2, Mohammad

Moonesun3

1 Faculty of Marine Engineering Department, BSc student, Chabahar Maritime

University; [email protected] 2 Faculty of Marine Engineering Department, BSc student, Chabahar Maritime

University; [email protected] 3 Faculty of Marine Technology, Maleke-Ashtar University of Technology

(MUT); [email protected]

Abstract

The purpose of this paper is selecting the longitudinal optimum position of

outriggers of Trimaran for achieving a minimum hydrodynamic resistance.

The Trimaran hull is selected from NPL series with a round bilge hull

form. Trimaran is modeled in five different modes of longitudinal position

and one fixed transverse position (30% of the length of the main hull) and

the results are compared for optimization. Maxsurf 20 (v 8i) is used for

modeling and analyzing. For hydrodynamic resistance analysis the Slender

Body method was used because the hull is very long and slender. Finally,

the critical Froude numbers and the total resistance coefficient are

discussed.

Keywords: Trimaran, Maxsurf, Hydrodynamic Resistance, Froude,

Wave-making.



65 | P a g e

Investigation the materials of friction plates for marine

clutches

Majid Fatehifar1, Ali Golshani Ajabshir2, Naser Firuzan Galhe3

1Graduate MS, K. N. Toosi University of Technology;

[email protected] 2 Master of material engineering, University of Tabriz,

[email protected] 3Graduate MS, Malek-Ashtar University of Technology;

[email protected]

Abstract

The utilization of friction force is very common in clutches. In this method,

engagement or separation of two surfaces leads to the transformation or

disruption of the power stream. Friction clutches are used in ships, battle

tanks, trucks, cars and other heavy industrial machinery and equipment.

Friction discs or clutch discs are produced from different materials with

different frictional capacities. Iron or copper based metal-matrix

composites, polymer-matrix composites, ceramic-matrix composites and

carbon/carbon composites are some examples of the materials used in

frictional applications. In addition to supplying the required friction, these

materials should endure the different working temperatures and

conditions, have appropriate hardness, strength and wear resistance values

and also high thermal conductivity. In this paper, different compositions

of these materials are introduced and the role of different additives are

investigated. Also, the endurable working temperatures for each material

are mentioned.

Keywords: friction material, clutch, metal-matrix composite, polymer-

matrix composite, ceramic-matrix composite, carbon/carbon composite.



66 | P a g e

Investigating vibration fatigue of shaft-coupling-rotor

system for different unbalanced shafts

Farid Vakili-Tahami1, Majid Fatehifar2, Arash Mohammad

Alizadeh Fard3, Naser Firuzan Galhe4

1Associate professor, University of Tabriz; [email protected] 2Graduate MS, K. N. Toosi University of Technology;

[email protected] 3PhD student, University of Tabriz; [email protected]

4Graduate MS, Malek-Ashtar University of Technology;

[email protected]

Abstract

Vibration is one of the major parameters witch cause failure of rotating

components such as shafts. In this work, firstly equation of motion for a

rotor shaft coupling system have been developed. It has been assumed that

the system has a predefined eccentricity and also it is subjected to lateral

radial load. For obtaining governing equations it is has been assumed that

the system has three degree of freedom with lateral and rotational

vibration. For solving equations Runge-Kutta numerical method is used

and by calculating amplitude and mean rotation, mean and alternating

shear stresses are obtained. Finally, the safety factor for the shaft is

obtained. The results show that fatigue safety factor is significantly

affected by eccentricity; so that by increasing eccentricity, fatigue safety

factor is reduced significantly. This equations prove that the effect of

eccentricity should be taken into account in designing rotating component

to prevent any fatigue failure.

Keywords: Coupling, Rotor, Unbalanced shaft, Rotational vibration,

Lateral vibration, Fatigue.



67 | P a g e

Developing software to design marine gearbox

components according to BV rules

Naser Firuzan Gale1, Farzad Fallahi2, Hamed Alivand3

1Ms of Mechanical Engineering, Malek-Ashtar University of Technology;

[email protected] 1Phd Student, Urmia University; [email protected]

31Ms of Mechanical Engineering, Tarbiat Modares University;

[email protected]

Abstract

The gear systems are widely used in industry to transmit the power or

change the direction of the torque. Due to the extensive usage of the gears,

the detailed design and the subsequent maintenance of these systems are

more and more evident. In this article among many methods to design spur

and helical gears and shaft in industry, BV rules are chosen. Since software

are used to prompt and accurate calculation, after brief explanation of BV

rules, developed software based on GUI will be explained. In this software

in addition to BV rules, Interference and undercut conditions are

considered too this software also could evaluate start and end of active

profile. The software can be used to design spur and helical gear tooth and

gear shaft. At last an example is solved by software and result are shown.

Keywords: gear, shaft, BV rules.



68 | P a g e

Effect of stretch mooring line on the dynamic response

of the semi-submersible platform

Hamidreza Ghafari1 ،Morteza Dardel2

1Master of Science، Babol Noshirvani University of Technology;

[email protected] 2Associate Professor، Babol Noshirvani University of Technology;

[email protected]

Abstract

The types of floating platforms are all need to be moored when they are

working as production platforms. mooring cables are typically used to

maintain a floating offshore platform in position in a sea environment.

Extensive research has been carried out in the past concerning

semisubmersible motion response. In the present work، firstly، Amirkabir

semi-submersible platform modeling in AQWA-ANSYS software and

then the effect of stretch mooring line on the motion responses of platform

are investigated through frequency domain and time domain simulation.

Aqwa employs a hybrid method to model the large-volume components of

a structure by diffracting panels and the small cross sectional components

by Morison elements. Also this software uses the three-dimensional

radiation/diffraction theory. Each dynamic mooring line is modeled as a

chain of Morison-type elements subjected to various external forces. The

obtained result shows that increasing Stretch mooring line، could reduce

motions of the platform but instead could increase the mooring line

tension.

Keywords: semisubmersible platform، radiation/diffraction theory،

mooring cable، frequency domain، time domain.




69 | P a g e

Effect of buoy location on a moored semi-submersible

motion

Hamidreza Ghafari1 ،Morteza Dardel2

1Master of Science، Babol Noshirvani University of Technology;

[email protected] 2Associate Professor، Babol Noshirvani University of Technology;

[email protected]

Abstract

Generally، floating structures play an important role for exploring the oil

and gas from the sea. The force and motion prediction of offshore

structures may be carried out by using time domain or frequency domain

or model tests. dynamic response of a semi-submersible platform under

the sea environment conditions are one of the most important issue in

offshore industry. In general mooring systems have been used as an

important element for decreasing motion response of floating structure. In

this paper the frequency domain and time domain analysis used in Aqwa

Ansys software to investigate the effects of buoy location on catenary

mooring line system and obtained a moored semisubmersible motion

response in sea environment conditions numerically. the JONSWAP wave

spectrum and API Wind Spectrum considering as environmental

condition. Aqwa employs a hybrid method by using the diffracting panels

and Morison elements and each dynamic mooring line is modeled as a

chain of Morison-type elements and then the equation of motion of the

floating structure system is expressed in a convolution integral form

Keywords: semisubmersible platform، radiation/diffraction theory،

buoy location.




70 | P a g e

Non-axisymmetric three dimensional stagnation point

flow and heat transfer on a flat plate Ali Shokrgozar abbasi1, GHolam Rza Noroozi 2, Ebrahim

Jafari3 1Professor, Mashhad, Ferdowsy/Mechanics; [email protected]

2B.s, Bandarabbas NEDAJA/Mechanics; [email protected] 3M.s, Bandarabbas NEDAJA/Mechanics; [email protected]

Abstract

The existing solutions of Navier–Stokes and energy equations in the literature

regarding the three-dimensional problem of stagnation-point flow either on a

flat plate or on a cylinder are only for the case of axisymmetric formulation.

The only exception is the study of three-dimensional stagnation-point flow on

a flat plate by Howarth (1951, “The Boundary Layer in Three-Dimensional

Flow—Part II: The Flow near Stagnation Point,”Philos. Mag., 42, pp. 1433–

1440), which is based on boundary layer theory approximation and zero

pressure assumption in direction of normal to the surface. In our study the

non-axisymmetric three-dimensional steady viscous stagnation-point flow

and heat transfer in the vicinity of a flat plate are investigated based on

potential flow theory, which is the most general solution. An external fluid,

along z-direction, with strain rate a impinges on this flat plate and produces a

two-dimensional flow with different components of velocity on the plate. This

situation may happen if the flow pattern on the plate is bounded from both

sides in one of the directions, for example x-axis, because of any physical

limitation. A similarity solution of the Navier–Stokes equations and energy

equation is presented in this problem. A reduction in these equations is

obtained by the use of appropriate similarity transformations. Velocity

profiles and surface stress-tensors and temperature profiles along with

pressure profile are presented for different values of velocity ratios, and

Prandtl number.

Keywords: similarity solution, non-axisymmetric three dimensional,

stagnation flow and heat transfer, steady, viscous fluid.



71 | P a g e

Depth identification of underwater vehicles moving

near the free surface by using neural network

Seyed Khalil Shariati 1, Seyed Hossein Mousavizadegan2

Candidate, Department of Maritime Engineering, Amirkabir University of PhD 1

Technology, [email protected] 2 Assistant Professor, Department of Maritime Engineering, Amirkabir

University of Technology, [email protected]

Abstract

Waves are generated due to motion of bodies on or near the free surface of

water. The form of the generated wave is a function of geometry and

motion of the body and also the fluid properties. The height of the first

wave at the bow of the body is only depend on the velocity and the depth

of submergence of the body. A model is developed using the neural

networks to obtain the height of the wave at the bow of a model submarine.

The initial data are produced using CFD computations and based on these

data the neural networks model is developed. Knowing the length and

velocity of an underwater vehicle, the height of first bow crest has been

measured and then, the depth of submergence is calculated. This

information may be applied for submarine detections.

Keywords: Identification, underwater vehicle, free surface,

hydrodynamic wave pattern, neural network



72 | P a g e

Feasibility and conceptual design of electrical

propulsion systems for heavy-duty ships with modeling

of electrical motor driver

Mohammad Afiyatlou1, Nader Shirdel2, Naser Firuzan ghale3

1Master of Science, Tabriz University; [email protected] 2Researcher, Marine Industries Organization; [email protected] 3Researcher, Marine Industries Organization; [email protected]

Abstract

Design and building of heavy military and passenger vessels, often was

done with mechanical propulsion systems that have some systemically

disadvantages such as excess weight, high volume mechanical equipment

and low controllability. Versus the mechanical propulsion systems, design

and implementation of electric propulsion systems for commercial vessels

come on to solve a mechanical system disadvantages. The main advantage

of electric propulsion systems is high precision controllability speed driver

for electrical motor. In this paper, the reasons of design and

implementation of electric propulsion systems for vessels was

investigated. Also we design the new high power speed driver for marine

electrical motors with new vector control method.

Keywords: electrical propulsion systems, high power driver,

mechanical propulsion systems.



73 | P a g e

Launching simulation of an UUV by using force of the

internal blade tube

Mahdi Mahdavikhah1, Javad Enferadi2

1MSc, Ferdowsi university of Mashhad; [email protected] 2Department of Mechanical Engineering, Mashhad Branch, Islamic Azad

University, Mashhad, Iran; [email protected]

Abstract

The Autonomous Underwater Vehicle (AUV) is one of the most practical

equipment’s in the underwater researches which there are many methods

for launching them to sea from vessel. One of these methods is launching

by the propellant force of the AUV that consumes vast amount of its

energy. In this paper a new method is invented that launches the AUV to

sea without consuming its energy using the blade in the tube which is fixed

to it. The blade works by the energy of the vessel. This method is simulated

in ANSYS-CFX software using 3D moving mesh. Velocity and

displacement of the AUV traveling in the tube is computed.

Keywords: Numerical simulation, New launching method, UUV,

Moving mesh.



74 | P a g e

Effect of transverse position of outriggers of trimaran

on hydrodynamic resistance of NPL series by maxsurf

software

Davood Ahmadi Amin Abadi1, Mohammad Moonesun2

1 Faculty of Marine Engineering Department, BSc student, Chabahar Maritime

University; [email protected] 2 Faculty of Marine Technology, Instructor, Maleke-Ashtar University of

Technology (MUT); [email protected]

Abstract

The purpose of this paper is selecting the optimal transverse position of outriggers

of Trimaran for achieving a minimum hydrodynamic resistance. Modeling is

performed for three different longitudinal position of outriggers in six different

transverse position (as a percent of main hull length) by Maxsurf 20. The results

of resistance for each model are compared to each other, for hydrodynamic

resistance optimization. The Trimaran hull is selected from NPL series with a

round bilge hull form. For hydrodynamic resistance analysis the Slender Body

method was used because the hull is very long and slender. Finally, for extending

the scientific results to every other Trimarans, wave making resistance

coefficients and total resistance coefficients versus Froud numbers are presented.

The critical Froude numbers are evaluated.

Keywords: Trimaran, Maxsurf, Hydrodynamic Resistance, Critical Froude,

Wave-making Resistance, Resistance Coefficient.



75 | P a g e

Analytical calculation of the required oil flow rate for

lubricatinggears and bearings of marine gearboxes

Hamed Alivand1, Hamed Safarzade2, NaserFiruzan ghale3

1Master of Science, Tarbiat Modares University; [email protected] 2Master of Science, Tabriz University; [email protected]

3Master of Science, Malek Ashtar University of Technology;

[email protected]

Abstract

Lubricating and cooling in gearboxes are important factors for properly

working of gearbox, preventing the wear of its parts, and as a results

increasing the life span. Therefore designing the proper lubricating system

is an important factor in design of gearboxes. In this study, it is tried to

investigate the designing of marine gearbox lubrication systems by

introducing a mathematical process. The aim of this project is using the

information of a marine gearbox such as power, oil type, utilized bearing

types, gears and the lubrication points to obtain the essential oil flow rate

to do the lubrication of gears and bearings. For this purpose, the task of the

oil, furthermore the lubrication, is considered as cooling the components

that have been heated by energy dissipation. In other words, the energy

dissipation as heat is considered as the only source of energy loss and the

cooling flow rateto transmit the heat created. Therefore, first the value of

the energy loss during the working of the gearbox is calculated and by

considering this energy loss to the heat dissipation in the system the value

of the oil flow rate is obtained. Finally, two different flow rates for two

different working speeds of 1000 and 3000 revolution per minute are

extracted and evaluated by its real value in a marine gearbox.

Keywords:marine gearbox, Oil flow rate, Loss power, Bearing, Gear.



76 | P a g e

Optimization of storage tank arrangement for a FPSO

in different load case considering hydrostatic stability

, 3Arash Abbasnia, 2Alireza Kiamehr , 1Hamid KHodaei 4Abdolrahim Taheri

[email protected] of Petroleum University of Technology; 1

[email protected] of Petroleum University of Technology; A.2

Faculty Member of Petroleum University of Technology; 3

[email protected]

Faculty Member of Petroleum University of Technology; 4

[email protected]

Abstract

Nowadays offshore oil and gas field have been developed and the facilities

for storage, drilling and production have been provided to explore and

extracting the oil and gas.

Ship shape structure is one of floating structures can be used as a unit for

storage, drilling and producing of oil and gas. Storage capacity of ship

shape structure is the most important factor in basic design. In this paper

based on Standard Rules, a hull shape is arranged with storage tank. The

stability criteria of this structure will be examined for different case studies

the proper arrangement and storage tank dimensions is achieved by using

the optimization approach. The optimization is carried out based on

stability criteria.

Keywords: offshore, FPSO, optimization of tank arrangements,

Optimum FPSO Storage.







77 | P a g e

Investigation and calculation of hydrodynamic

coefficient for an AUV by analytical-experimental

method

Saeid Zarenezhad1, Reza Hasanzadeh Ghasemi2

1M.Sc of Mechanical Engineering, Shahrood University of Technology;

[email protected] 2Department of Mechanical Engineering, Hakim Sebzevari University;

[email protected]

Abstract

In this paper, calculation of hydrodynamic coefficients of a sample AUV

has been investigated. According to importance of mentioned coefficients

in control and behavior of AUV, calculation of these coefficients should

have enough accuracy. In order of that, in this paper, simulation of

behavioral motion of AUV have been inspected with analytical-

experimental method and utilization of previous experimental data by

MatLab GUI. This software code has been added in several modules such

as geometry module, physical characteristics module and boundary

conditions module. Two and three dimension plots of AUV motion in

inertial coordinates main plates can be seen simultaneously. Also, in order

to check the effect of these coefficients on AUV open loop behavior in

vertical and horizontal fins angles, in two specific situation the AUV

behavioral motion in a time slot have been compared with experimental

results. Although the analytical-experimental method have an acceptable

precision only for torpedo shape profiles, but hydrodynamic coefficients

calculation can be achieved quickly. At the end, it can be said that results

of this paper have an acceptable accuracy in comparison to experimental

results.

Keywords: hydrodynamic coefficient, AUV, analytical-experimental

analysis, behavior.




78 | P a g e

Effect of shield gas compositions on mechanical properties

of 5083 marine aluminum alloy by the GMAW Welding

process Alireza gharahi1, Amin reza koushki2

1MSc. material science engineer, Islamic azad university science & research campus;

[email protected] 2MSc. material science engineer, Iran science & technology University;

[email protected]

Abstract The unique properties of aluminum have turned this metal to one of the most commonly

used industrial metals in the world. Unlike steel welding, aluminum welding is much

more complicated due to some thermo-physical properties of aluminum. Thus to achieve

higher quality welding, a complete controlled process is essential. Shielding gas is one of

the most important parameters of GMAW welding that affects the melting rate, arc

stability, the shape and depth of penetration. In this research, the commercial 6 mm thick

5083H321 aluminum alloy plates were used as base plate and 1.6 mm diameter 5183

aluminum alloy wire as filer metal and the DP-GMAW welding method was chosen.

Experiments were carried out using different amounts of NO, N2, and O2 added to Argon

as the shield gas and producing several gas compounds like Ar-0.03%No, Ar-0.1%N2-

0.1%O2, Ar-0.5%N2-0.5%O2،Ar-1%N2-1%O2, Ar-1%N2-2%O2 & Ar-2%N2-2%O2-

0.1%O2، Ar-0.5%N2-1%O2 and then investigating the mechanical properties of the

penetration. It’s necessary to mention that the shielding gases used in this experiment

were 100% pure argon. It was concluded that adding 0.03% NO to Argon was resulting

to increase the arc stability, increase its mechanical properties. It was concluded that

adding N2 and O2 to Argon increases the amount of initiated heat and therefore the depth

of penetration accordingly. Adding small amounts of oxygen and nitrogen (up to %1) to

Argon was resulting to increase the arc stability, its mechanical properties. However,

adding higher amounts of nitrogen and oxygen (more than 1%) to Argon, beside the

formation of excessive brown and black oxide film on bead surface, bigger holes and

inter-metal compounds observed. The results of tensile test of these samples showed that

small amounts of N2 and O2 (up to % 0.1) increases the tensile strength of the penetration

by 5.5 times more in compare with pure Argon. On the other hand, increasing much

bigger amounts of N2 and O2 not only is not improving the quality of penetration, but also

lead to decreasing the outfit quality and failure of all samples in bending test. Finally, it

was concluded that addition of 0.1 percent Nitrogen and Oxygen to Argon has the best

result in compare with pure Argon shield gas since it increases depth of the penetration

by 7percent and the tensile strength by 5.5percent.

Keywords: Double pulsed gas metal arc welding; 5083H321 Aluminum Alloy;

shielding gas mixture; mechanical properties.




79 | P a g e

A novel algorithm for data association and fusion for

multi target multi sensor bearings

Sayed mohammad taghi mousavi shoushtari1, mohammad

hedayati khodayari2

1PhD candidate of communication engineering,ferdowsi University of mashhad;

[email protected] 2PhD student of engineering electrical control ,ferdowsi University of mashhad;

[email protected]

Abstract

In this paper, we propose a novel algorithm for data association and fusion

of multi targets and multi passive sonar data. The result of using data

association and fusion, is decrease in clutter number, increase in precision

and decrease of vague to TMA (target motion analysis) processing. Data

association detects that which observation come from which tracks in

single sensor tracking. Moreover, in multi sensor target tracking,

association specify that which tracks of sensors must associate to them to

fusion.

Keywords: data association, data fusion, target tracking, passive sonar.



80 | P a g e

A numerical and theoretical study of wave interaction

with floating vertical cylinders by boundary element

method and removal of singularities in boundary

integral equations

Mehdi Nazari Berenjkoob 1, Mahmoud Ghiasi 2

1 Department of Maritime Engineering, Amirkabir University of Technology,

Tehran; [email protected] 2 Department of Maritime Engineering, Amirkabir University of Technology,

Tehran; [email protected]

Abstract

Integral equations arise in many problems of physics and technology. The

main advantage of such methods is that they reduce the dimensionality of

the problem by one and transform an infinite domain of interest to finite

boundaries in which the far-field condition is automatically satisfied. From

the numerical perspective, both of these facts are extremely important. In

this paper, we investigate the interaction of wave with floating vertical

cylinders using boundary element method. In solving diffraction and

radiation problem arise singularities that were resolved with a unique

method .Also, determine wave excitation forces on a floating cylinder in

water of infinite in directions of heave, surge and pitch. For ease of use in

the design of wave energy absorber buoy, a graphical representation of the

wave excitation forces with respect to the incident wave frequencies for

various drafts to radius ratios of devices are given. In particular, the heave,

surge and pitch excitation forces, which are the only three forces on an

axisymmetric device, were derived.

Keywords: Boundary Integral, Green's Function, Singularities, Wave

Radiation.



81 | P a g e

Investigation and numerical analysis of current around

a sample auv for hydrodynamic coefficients calculation

by tension test

Saeid Zarenezhad1, Javad Enferadi2, Vahid Shoorian3

1M.Sc of Mechanical Engineering, Shahrood University of Technology;

[email protected] 2Department of Mechanical Engineering, Mashhad Branch, Islamic Azad

University, Mashhad, Iran; [email protected] 3M.Sc of Aerospace Engineering, Malek-e-Ashtar University of Technology;

[email protected]

Abstract

In this paper, calculation of some of hydrodynamic coefficients of a sample

AUV by geometrical modeling and numerical analysis of it's around

current has been illustrated, according that these coefficients are

individual; they must have an acceptable precision. Calculation of

coefficients with analytical-experimental methods, for Myring profile

(torpedo shape) have a high accuracy but for geometrics with different

shape from Myring profile, the mentioned analysis confront with lack of

experimental data and the used equations can't predict the mentioned

coefficients for a submerged body. In this paper, a sample AUV, called

Remus100, has been optimized grid, then numerical simulation according

to finite volume and steady state current analysis with ANSYS-CFX

software have been performed. In order to have a higher precision and

better approximation to reality, SST turbulence model has been used in

friction drag force calculation. At the end, comparison of experimental

results and this paper results shows a good agreement between them.

Keywords: numerical analysis, AUV, hydrodynamic communication,

tension test.






82 | P a g e

Experimental hydrodynamic and cavitation

investigation of submerged propeller

A.H Razaghian1, M.R Fathi Kazerooni2, M.S Seif3

1Ph.D Student, Center of Excellence in hydrodynamics &dynamics of marine

vehicles, Sharif University of Technology; [email protected] 2 Ph.D Student, Center of Excellence in hydrodynamics &dynamics of marine

vehicles, Sharif University of Technology; [email protected] 3 Professor, Center of Excellence in hydrodynamics &dynamics of marine

vehicles, Sharif University of Technology; [email protected]

Abstract

Hydrodynamic performance of marine propeller is one of the important

parameter including thrust, torque and open water efficiency. Propellers

used in high speed vehicles and torpedoes contains proper hydrodynamic

and cavitation performance that Most of these propellers have nonstandard

profile sections and their open water characteristics are available. Also, the

design procedure is according to postpone the cavitation inception and to

improve the acoustic performance. This paper investigates the design,

manufacture and experimental analysis of DTMB 5168 propeller in Sharif

University of Technology cavitation tunnel. The propeller high skew

blades include non-standard sections evaluated as a propeller cavitation

calibrator. The manufacturing and experimental test criteria were based on

the ITTC Guidelines and recommendations to extract the accurate results.

In this regard, experimental results of the hydrodynamic coefficients and

tip vortex cavitation inception using high frame rate cameras are also

analyzed and discussed.

Keywords: DTMB 5168 propeller, Non-standard section,

Hydrodynamic performance, Tip-vortex cavitation



83 | P a g e

Thermal and mechanical analysis using finite element

method for laser cutting high strength steel A517

Yasaman Shabani1, Mesbah Sayeh bani2, Mahmood Ghiasi3,

Saeed Shadkam4, Amirabbas Arbabi5

1 Graduate student in Marine Engineering, Marine Engineering Department of

Amirkabir University of Technology; [email protected] 2Assistant Professor, Faculty of Marine Engineering Amirkabir University of


2Assistant Professor, Faculty of Marine Engineering Amirkabir University of



Amirkabir University of Technology; [email protected] 5 Master of Shahid Darvishi Complex; [email protected]

Abstract

Production of components by laser cutting is widely accepted in the

industry. Laser cutting has various advantages such as high flexibility of

the process parameters and material type is shown and also high accuracy

for complex geometries and dimensions have been different. So check the

quality parameter of the process is essential. Few studies about the changes

in the laser cutting laser power to predict the residual stress and distortion

in the steel, especially in high strength steels is performed. In this study, a

heat source as a heat source laser with Gaussian distribution for modeling

laser cutting is intended. Temperature fields and residual stress and

distortion of the workpiece using the finite element method for five

different power lasers for cutting carried out and the data were compared.

Keywords: Laser Cutting, Simulation, Thermal and Mechanical

Analysis, Residual Stress and Distortion.






84 | P a g e

Modeling and control of autonomous underwater

vehicle (AUV) in heading and depth attitude via PPD

controller with state feedback

Soroush Vahid1 ,Kaveh Javanmard2

1PhD candidate, Semnan University, [email protected] 2 PhD candidate, Semnan University, [email protected]

Abstract

This paper focuses on design of AUV control system to control depth and

pitch. Complexity and highly coupled dynamics, time-variance, and

difficulty in hydrodynamic modeling and simulation, complicates the

AUV modeling process and the design of proper and acceptable controller.

A PD (Proportional- Derivative) controller, control the vehicle pitch and

an outer P loop controller with state feedback will control the depth. The

kinematic and dynamic equations will be extracted using various

conditions such as the relative speed along the axis X (u), the speed along

the axis Z (w), Pitch rate, forward position relative to the ground (x), depth

(z), and the Pitch angle (Ɵ). Then we linearize the equations of motion of

the AUV by choosing a suitable set of operating conditions. For effective

control of the motion of AUVs, we need to design controllers based on the

AUV’s dynamic model. Through the control of propeller and fin’s

deflection, we can achieve the control system of AUVs. The simulation

results indicate that developed control system is stable, competent, and

efficient enough to control the AUV in tracking the two channels of

heading and depth with stabilized speed.

Keywords: AUV, PPD (Proportional- Proportional –Derivative), Pitch,

Circulate, hydrodynamic





85 | P a g e

Mathematical modeling for planing hulls roll motion

using asymmetric 2D+T theory

Sasan Tavakoli1, Parviz Ghadimi2, Abbas Dashtimanesh3

1Dept. of Maritime Engineering, Amirkabir University of Technology;

[email protected] 2 Dept. of Maritime Engineering, Amirkabir University of Technology;

[email protected] 3Faculty of Engineering, Persian Gulf University; [email protected]

Abstract

Current paper presents a mathematical model for the roll motion of planing

hulls. This model is developed using added mass and variation of angular

momentum of 2D wedge section, and underlying basics of the model is the

2D+T approach. To develop the model, a wedge entering water of two-

degrees of freedom is considered and the final moment acting on it is

determined. In the extracted relations for this aim, roll speed and

hydrodynamic forces effects can be seen. To determine the half wetted

beam of the wedge section and its time derivative, the instantaneous

deadrise angle variation of each side is computed. Expanding the 2D

equations throughout the entire length of the boat, the final moment and

motion equations are found. Ultimately, the developed equations are

utilized for modeling the forced roll and prediction of dynamic response

of the vessel due to a time-harmonic moment. The obtained results from

both studies are compared against previous available data and it is

observed that the proposed model has a proper accuracy.

Keywords: planing hull, roll motion, mathematical modeling, wedge

water entry, asymmetric 2D+T theory.



86 | P a g e

Numerical simulation of flow around 2D flat planing

plates and a parametric study of effective factors

Saeid Panahi1, Parviz Ghadimi2, Sasan Tavakoli3

1M.Sc. student of Naval Architecture, Dept. Maritime Eng., Amirkabir

University of Technology; [email protected] 2Full professor of hydromechanics, Dept. Maritime Eng., Amirkabir University

of Technology; [email protected] 3M.Sc. of Naval Architecture, Dept. Maritime Eng., Amirkabir University of


Abstract

The current paper numerically investigates the flow around planing plates.

To analyze the problem, the Navier Stokes equations as well as Volume

Fraction are solved. To model the turbulence effect, the k-ω SST model is

applied. The most appropriate mesh has been adopted based on a

conducted mesh study. Also, In order to assess the validity of the presented

simulation, results of the current simulation are compared against previous

available data and good accuracy is displayed. The computed pressure, lift,

and drag coefficients as well as the free surface profile behind the planing

plate are presented. It is shown that an increase in Froude Number and trim

angle may lead to an increase in pressure as well as the lift force.

Keywords: planing plate, hydrodynamics, fluid flow, numerical

modeling.



87 | P a g e

Numerical simulation of the maneuvering of an AUV

by CFD

Masoud Hakamifard 1, Mahmoud Rostami V.F. 2

1M.S. student of Marine Engineering, MUT University; [email protected] 2Assistant professor, MUT University; [email protected]

Abstract

The scope of this paper is calculation of hydrodynamic coefficients of a certain

AUV, “REMUS”, using computational fluid dynamic. On maneuvering of this

auv, the Second-order coefficients and added mass coefficients were calculated

in trading software Star-CCM+ and were compared to experimental values of

these coefficients. Result of comparison was acceptable for more numerical

simulations and expansion of virtual tests.

Keywords: hydrodynamic, REMUS, maneuvering, CFD .



88 | P a g e

3D analysis of regular waves generated by wedge shape

wave maker using OpenFoam code in numerical tank

Mahdi Yousefifard1,Nima Ghorbani2, Roya Shademani3

1Assistant professor, Department of mechanical engineering, Babol university

of thechnology; [email protected] 2 B.Sc. student, Department of mechanical engineering, Babol university of

thechnology; [email protected] 3PhD candidate, Department of maritime engineering, Amirkabir university of

technology, [email protected]

Abstract

In this essay, regular linear and nonlinear waves are simulated numerically

using a wedge-shape wave maker which has oscillating motion. Using two

phases solver of the OpenFOAM code and solving Navier-Stokes equations

with regard to the effects of turbulence and movable mesh, are led to

acceptable results in a three-dimensional domain. The height and frequency

of wave are considered as two main input variables and the specifications of

the generated waves are measured in different positions which are presented

in this paper. Some of the challenges in this research were: proper gridding to

provide smaller cells in the surrounding area of the surface, planning some

specific strategies so that the wave does not return from the end of the tank

and reducing the effects of turbulence at the edges of the wedge. Depending

on the depth of water, the height and frequency of the generated wave, six

waves are simulated with different characteristics in various manners and the

results are compared with validated experimental data. In order to compare

the two sets of data, the time period is sufficiently large and the changes of

the surface profile is investigated during this period. The results of the six

cases are acceptable and according to the conditions of the wave maker in the

three-dimensional tank, it can be used as a virtual marine laboratory which is

based on OpenFOAM as open source software.

Keywords: wave maker, openFoam, 3D analysis, wave height, free

surface



89 | P a g e

Speed control of autonomous underwater vehicle with

constraints using model predictive control

Seyyed Hossein Ghenaati 1, Shahram Aghaei 21

1Electrical and Computer Department, Yazd University, Yazd, Iran;

[email protected] 2Assistant Professor, Electrical and Computer Department, Yazd University,

Yazd, Iran; [email protected]

Abstract

Nowadays Autonomous Underwater Vehicles (AUVs) are an unavoidable

part of marine industries. One of the most important parts of any

autonomous vehicle is the control issue to achieve the desired

performance. This paper is concerned with speed control of an AUV model

respecting the state and control constraints. According to the Newton-

Euler method, the 6 DOF kinematic and dynamic models of the AUV are

established. A well-defined performance index and constrained finite

horizon optimization program in the form of Model Predictive Control

(MPC) strategy is proposed to regulate the horizontal speed of AUV to its

desired value while the constraints on the states like depth and control

signals are considered in finite time horizon optimization program to be

satisfied. The main problem for such a situation is the interaction between

speed control and depth deviation then quadratic programing technique

managed responses to avoid state and control signal constraints.

Simulation results show a reliable performance of proposed MPC strategy

to control the horizontal speed of AUV while all the constraints on state,

control signal and also the variation of the control signal are satisfied.

Keywords: Autonomous Underwater Vehicle, Model Predictive

Control, Optimization, Constraint Satisfaction.

1 Corresponding author



90 | P a g e

Optimization of buckling load of cylindrical shell made

of curvilinear fiber under external hydrostatic

pressure with use of genetic algorithm

Hossein Nopour1, Abdulreza Kabiri Ataabadi2, Mahmood

Mehrdad Shokrieh3

1Ph.D. student of marine engineering, Malek Ashtar University of Technology;

[email protected]

2Asiatant professor of science and marine engineering department, Malek

Ashtar University of Technology; [email protected] 3Professor of mechanical engineering department, Iran University of Science

and Technology; [email protected] Abstract

In this research, the optimum buckling load of cylindrical shell made of

curvilinear and straight fibers was obtained with inhome GA program and

ABAQUS finite element code. In the previous researches, external hydrostatic

pressure on the cylindrical shell made of curvilinear fibers is rarely

investigated. In some researches devoted to the mentioned loading condition,

the maximum buckling pressure enhancement with respect to cylindrical shell

made of straight fibers was about nine percent. Therefore, in the present study,

further investigation was done and for several aspect ratios of the length to

the diameter the optimization analysis was performed. Results show that

buckling pressure for the cylindrical shell made of curvilinear fibers with

similar respect to that of the cylindrical shell made straight fibers under

external hydrostatic pressure can be increased up to 30 percent. Mechanism

of enhancement in buckling pressure is locating the fibers in the hoop

direction at the middle of cylinder and using the straight fibers in longitudinal

direction in the cylinder edges leads to stiffening the middle area.

Keywords: Cylindrical shell, External hydrostatic pressure, Curvilinear

fiber, Buckling.



91 | P a g e

Accurate determination of lateral forces caused by

angular regular waves on crossdeck of the trimaram

ship using panel method

Adeleh Graylee1, Mahdi Yousefifard2, Mohammad Hasan

Ghasemi3

1 MSc, Mechanical engineering department, Noshirvani University, Babol, Iran,

[email protected] 2 Assistant professor, Mechanical engineering department, Noshirvani

University, Babol, Iran, [email protected] 3 Associate professor, Mechanical engineering department, Noshirvani

University, Babol, Iran, [email protected]

Abstract

In this article, the analysis of hydrodynamic behavior of Trimaran ship

exposing with regular and small amplitude waves using ANSYS AQWA

software based on boundary element method (BOM) and potential theory

scheme. The main issue in Trimaran structural design is cross deck that is

under the influence of high stress caused by transverse loads. The most

important load acts on Trimaran is splitting moment. As a result, in the

present article, this load would be obtained by using ANSYS AQWA

software based on hydrodynamic analysis and compare with rules results.

Direct calculation of these forces lead to reduction in structure weight and

consequently, reduce manufacturing costs. The amount of splitting

moment would be calculated for two different Trimaran speeds in variable

wave frequencies and angles. According to the results, the maximum

splitting moment occurs in angular waves and in intermediate frequencies.

Also, if ship speed increases, the maximum splitting moment increases

significantly too.

Keywords: Trimaran ship, hydrodynamic analysis, splitting moment,

panel method.



92 | P a g e

Optimization of radar cross section of a naval gun for

increasing naval ships’ stealth

H. Nekoie1, M. Hedayati Khodayari2

1M.s. of Electrical Engineering, Ferdowsi University of Mashhad;

[email protected] 2Ph.D student of Electrical Engineering, Ferdowsi University of Mashhad;

[email protected]

Abstract

Radar cross section is one of the most important parameters in the earliest

design of naval ships. Reducing the radar cross section leads to decreasing

the detection range, improving electronic warfare systems and so

increasing the ship’s stealth. In order to reduce the radar cross section,

there are two effective techniques (shaping and employing radar absorbing

materials) so that shaping is used as a primary and basic method in design.

In addition to optimization of the ship structure, optimizing the geometry

of systems installed on the open deck, has an important role in reducing

the whole ship’s radar cross section. Optimizing the shape of a naval gun

and simulating the radar cross section show that employing the shaping

technique, can dramatically reduce the gun’s radar cross section and so the

ship. Also, with the simulation of hotspots at several angles, surfaces that

have more contribution in the backscattering to radar, are determined.

Keywords: radar cross section, high frequency, shaping, optimization,

naval gun, scattering.



93 | P a g e

Modeling and finite element analysis of a merchant

ship towing wire rope

Alireza Jahanbakhsh1, Ali Zahedifar2, Reza Naghdabadi3,

Jamal Arghavani Hadi4

1M.Sc. Student, Mechanical Engineering Department, Sharif University of

Technology; [email protected] 2M.Sc. Student, Mechanical Engineering Department, Sharif University of

Technology; [email protected] 3Professor, Mechanical Engineering Department, Sharif University of

Technology; [email protected] 4Assisstant Professor, Mechanical Engineering Department, Sharif University of


Abstract

Some ordinary merchant ships and vessels like pontoon barges are not

designed to have any thrust-making machinery equipment or so called

“Engine”. Also it is not possible for an engine vessels to have engine thrust

force in all working conditions or even some kind of failure may cause the

machinery shut down. Therefore one of the most significant operations for

ships is the Towing Operation and thus relevant technical procedures are

prepared, approved and are ready to use onboard. One of the critical points

to note in preparing these procedures is the mechanical properties of wire

ropes used in the Towing Operation. In this paper regarding the main

dimensions of an assumed ordinary merchant vessel, the tension load on a

towing wire rope during a towing operation is calculated using the

Equipment Number determined by classification rules and a finite element

model of a 7*7 steel wire rope is prepared using CAD and CAE software.

Finally the results in terms of Von-Mises, normal stresses and the

longitudinal strains are assessed and validated by theoretical results.

Keywords: Towing wire rope, Merchant vessel, Finite element method,

Equipment number.







94 | P a g e

Introducing a new computational model for system

arrangement integration in ship design

Amir Mohamad Hoseini 1,Mohammad Vahedian dargahi2

1MSc, mechanical engineering - Applied mechanics, Ferdowsi University of

Mashhad; [email protected] 2MSc, communication engineering - systems, Sajad University of technology;

[email protected]

Abstract

Integration is one of the complicated processes in design of surface vessels

that has vast effects on its performance. Integration process is a trial and

error method intrinsically. Traditional integration methods have

weaknesses such as time consuming process, hidden incompatibilities, non

optimal arrangement and uncontrolled designer errors that results in

increasing the cost of design and finally not achieving the desired results.

Hence, in order to overcome the mentioned weaknesses, In this paper a

new computational model is presented for integration in vessel design that

has the ability of software employment. In this model, different aspects of

the integration process is modeled such as physical arrangement,

electromagnetic interference, power source, environmental conditions, etc

and system incompatibilities are extracted. Also integration optimization

methods with two approach of platform or systems optimization is

introduced.

Keywords: Integration, arrangement, vessel, compatibility,

computational model.



95 | P a g e

Investigating the effect of wire arrangement and

number of layers on the strength of marine wire ropes

Ali Zahedifar1, Reza Naghdabadi2, Jamal Arghavani Hadi3 ,

Alireza Jahanbakhsh4

1M.Sc. Student, Mechanical Engineering Department, Sharif University of

Technology; [email protected] 2Professor, Mechanical Engineering Department, Sharif University of

Technology; [email protected] 3Assisstant Professor, Mechanical Engineering Department, Sharif University of

Technology; [email protected] 4M.Sc. Student, Mechanical Engineering Department, Sharif University of


Abstract Marine steel wire ropes are used in the most load transfer operations in marine

industries like Towing Operation, Mooring, Anchoring and Deck Load

Transfer. There could be many variations of wire and strand arrangements to

make a wire rope and the differences in the arrangements may cause

differences in working strength of the ropes. In this paper the effect of change

in the wire arrangement and the number of layers on the strength of the steel

wire ropes is assessed. Two different arrangement with equal sectional area

and outer diameter, a two layered 1*7 wire rope and a three layered 1*19 one

are modeled using CAD and CAE software. Finally the results in terms of

Von Mises and normal stresses and the longitudinal strains are assessed and

validated by theoretical and published experimental results. Finally it is found

that generally, steel wire ropes having a great number of individual wires are

used for running riggings since they provide more flexibility while ropes with

fewer individual wires are used for standing riggings since they provide less

elongation and greater wear-resistant.

Keywords: Towing Wire Rope, Wire Arrangement, Finite Element

Method, Mechanical Properties.







96 | P a g e

Stability and seakeeping performance assessment of a

ship shape FPSO in three main operational conditions

at Persian Gulf: full loaded; half loaded and full ballast

Navid Baghernezhad1, Pedram Edalat2, Mahmoud Etemaddar3

1Faculty of Marine Engineering, Petroleum University of Technology,

Mahmoudabad, Iran; [email protected] 2 Faculty of Marine Engineering, Petroleum University of Technology,

Mahmoudabad, Iran; [email protected] 3 Centre of Ships and Offshore Structures, CeSOS, Trondheim, Norway;

[email protected]

Abstract

Floating, Production, Storage and Offloading “FPSO” is the most common

floating production system in offshore oil and gas industries with broad

environmental applications. FPSOs offer more economical alternative to long-

distance seabed pipelines. Hull design for FPSO can be challenging, as the

maritime and offshore industries may have conflicting approaches. Therefore,

designers should know the basis and limitations of respective approaches to

analyze effective FPSO hull structure design. Stability and seakeeping are two

main parts of a floating structure hull design and performance assessment. The

objective of this study is to establish a systematic approach for performance

assessment of FPSO units in three common loading conditions. The problem is

defined as Multi-Criteria Decision Making (MCDM) model. Analytical hierarchy

process (AHP) is used for solving multi-attribute decision problems. The system

characteristics and responses including intact and damage stability, significant

responses and amplitudes including, motions and accelerations are calculated by

respected diffraction code and considered as performance measurements. The

analytical hierarchy process is used to weight, rank and compare the performance

measurements for three given loading conditions.

Keywords: FPSO, Stability, Seakeeping, Multidisciplinary system, Persian

Gulf.





97 | P a g e

Drag analysis of an AUV using ansys fluent software

Manouchehr Fadavie-Ardestani1, Navid Ta’abbodi-Jahromi2

1Assistant Professor, Amir Kabir university of technology; [email protected] 2Msc. Student of naval architecture engineering, Amir Kabir university of

technology; [email protected]

Abstract

With the increasing development of robots and autonomous vehicles in

offshore areas, needs for the presence of this type of robots are more

crucial than ever. Construction of Underwater equipment involves a series

of pre-built modeling. A key point to make an Autonomous Underwater

Vehicle is awareness of amount of hydrodynamic resistance. Purpose of

this article, is use of a practical example to simulate drag of an AUV with

the help of Ansys Fluent software. First underwater vehicles introduced,

and then hydrodynamic resistance and turbulence is discussed and after

introduction of solving algorithms, AUV simulation in software is

explained and by Assuming the speed of the vehicle in water is two meters

per second, the resistance caused by movements in the water -using

computational methods - is obtained. by software outputs, the sensitive

parts of the body with its pressure distributions is obtainaed. At the end, in

order to improve the simulation and is related results, some advices are

mentioned and with respect to results, for amount of thrust needed by the

vehicle, plausible choices could be made.

Keywords: hydrodynamic resistance, Autonomous underwater vehicle,

Ansys Fluent, AUV, Drag, Simulation



98 | P a g e

Planning of shipyard base on building of ship in 5000

dwt with method of SLP

Mohammad Azadvari1,Fateme ZolfagharNasab2, Kianoosh

brdran 3

1M.Sc of naval artichector, bushehr Persian Gulf University;

[email protected]

2 M.Sc of naval artichector , boshehr Persian Gulf university ;

[email protected] 3M.Sc Student of marine structures,Tehran searches Science

university;[email protected]

Abstract

Iran Despite having a long history in the marine industry and having three

thousand kilometers of border is still lagging in shipbuilding. Despite

shipbuilding Iran invested more than two billion dollars yet to be acceptable

or share your brilliant record among the world's shipbuilding enterprises have

been perceived. One of the reasons could be lack of familiaritywith the

authorities evaluate the shipbuilding industry, Since the majority of domestic

vessels, tonnage between 1000 and 5000 tonnes to be included. According to

the optimal design goals necessary for the construction of these ships can be

seen over and over. Given the productivity and competitiveness of the

industry ship building largely depend on economic indicators. Achieving a

sustainable economic designing the shipbuilding industry to become the first

goal. This small ship building for the production of plants with a capacity of

1,000 to 5,000 is the very respectively. As well as the production process and

maintenance process differences are many and important loss in terms of

different requirements. So in this paper with study of a shipyard plan base on

building of ship in 5000 dwt with method of SLP try to remove problems of

building of ship with this tonnage.

Keywords: Ship building,tonnage,maintained, SLP.



99 | P a g e

Thermal and mechanical analysis using finite element

method for laser cutting Mild Steel

Yasaman Shabani1, Mesbah Sayeh bani2, Mahmood Ghiasi3,

Saeed Shadkam4, Amirabbas Arbabi5


Amirkabir University of Technology; [email protected] 2Assistant Professor, Faculty of Marine Engineering Amirkabir University of


2Assistant Professor, Faculty of Marine Engineering Amirkabir University of



Amirkabir University of Technology; [email protected] 5 Master of Shahid Darvishi Complex; [email protected]

Abstract

Production of components by laser cutting is widely accepted in the

industry. Laser cutting has various advantages such as high flexibility of

the process parameters and material type is shown and also high accuracy

for complex geometries and dimensions have been different. in laser

cutting of metal plates, thermal stress developed in the area of cross-cutting

and material properties and cutting conditions affect the level of heat

stress. in this study, a heat source laser with Gaussian distribution for

modeling laser cutting is intended. Thermal stress in the region of the

cutting edge modeling and predicted temperature field and thermal stress.

temperature prediction was validated with experimental results. von Mises

stress and maximum temperature also changes with time along the cutting

line with the moving laser heat source. for three different speeds was

observed that increasing speed laser reduce temperature and increase Van

Mises stress.

Keywords: Laser Cutting, Simulation, Mild steel, Thermal and

Mechanical Analysis, Stress






100 | P a g e

Passive bearing only target tracking using a new batch

processing

Mohsen kariman Khorasani 1, Mohammad Vahedian Dargahi2,

Mohammad Hedayati Khodayari3

1Department of Electrical Engineering, Gonabad Branch, Gonabad, Iran

[email protected] 2Master of Science in Communication Engineering; Sajad University

[email protected] 3Ph.D Student in Control Engineering; Mashhad Ferdowsi University

[email protected]

Abstract

In this paper a new method for passive bearing only tracking is proposed.

In this method after introducing and designing a proper maneuver by an

observer, with fitting and processing measured noisy data using given

sliding window and optimizing on unknown parameters of target including

position and course, these parameters are estimated. For increasing the

precision of the estimation, data has been processed in each sliding

window separately and the final estimation is obtained by averaging on all

of the results. The benefit of this method is its independency to initial target

conditions which in turn is a big challenging in target tracking algorithms.

Simulation results show that the algorithm has acceptable precision in

finding target parameters.

Keywords: batch processing algorithm, passive tracking, bearing only

tracking, observability.





101 | P a g e

An experimental study on interceptor hydrodynamics

effect on performance of COUGAR hull model shape

Mohsen Mollae1, Ali Asghar Moghaddas Ahangari2, Hassan

Ghasemi3, Azize Asgari4

1Msc in marine engineering, Imam Khomeini university of marine science;

[email protected] 2Msc in marine engineering, National iranian marine laboratory;

[email protected] 3PhD in marine engineering, Amir kabir university of technology;

[email protected] 4Msc in marine engineering, National iranian marine laboratory;

[email protected]

Abstract

Interceptors have been widely used in recent years in high speed craft for

ride and trim control. In spite of their popularity in power craft, few studies

have been published investigating the impact of interceptors on vessel

performance. In this study, the effect of interceptors on planning crafts

hydrodynamics performance is investigated through with an experimental

test. The models of planning COUGAR hull shape without step is tested

with and without interceptor in calm water at different heights to

investigate the effect of interceptor on resistance reduction. The scale that

is used is 1:5 and the test was conducted at national Iranian marine

laboratory. If interceptor installed in proper height it has significant effect

on dynamic stability of boat. The experimental results showing that the

resistance-speed diagram in hump region has small slope and remarkable

drag reduction up to 10% for hump point in comparision of model without

interceptor

Keywords: interceptor, drag reduction, planing craft, model test.



102 | P a g e

Determination of maneuvering hydrodynamic

coefficients of planing hull by oblique towing model

test

Mohammadreza Fathi Kazerooni1, Mohammad Saeed Seif2

1PhD Student, Center of Excellence in Hydrodynamics & Dynamics of Marine

Vehicles, Sharif University of Technology, [email protected] 2Professor, Center of Excellence in Hydrodynamics & Dynamics of Marine

Vehicles, Sharif University of Technology, [email protected]

Abstract

The first stage to solve the dynamic equations and estimate the

maneuverability and dynamic stability of marine craft is determination of

unknown hydrodynamic coefficients. These coefficients may be evaluated

theoretically, numerically or experimentally. Oblique towing model test in

towing tank is a well-known method to measure some of the linear

coefficients of ship maneuvering experimentally. Moreover the

hydrodynamic coefficients are speed, running attitude and flow regime

dependent in planing hull forms. Oblique towing model test is well

developed for displacement type hull forms but few experimental results

are expressed in literature for high speed crafts and the dependence of the

coefficients to forward speed is not understood yet. In this paper systematic

model tests are described to determine the effect of forward speed and

running attitude on hydrodynamic coefficients of a planing monohull. The

speed varying behavior of coefficients is determined through model tests.

Keywords: planing hull, maneuvering, model test, coefficients,

hydrodynamic

Port and coastal structures Offshore platforms Marine pipeline engineering Fabrication and installation of offshore structures Marine geotechnics Corrosion and protection of marine structures

Coastal and offshore facilities8 Port and coastal structures Offshore platforms Marine pipeline engineering Fabrication and installation of offshore structures Marine geotechnics Corrosion and protection of marine structures

Coastal and offshore facilities8



103 | P a g e

Analysis of Band Curvature in Asymmetrical Rolling

Process by FEM Method

Hassan Sayyaadi 1, Ramin Yekta2, Abolfazl Motekallem3

1Ph.D, Sharif University of Technology/ Department of Mechanical

Engineering; [email protected] 2M.SC Student, Sharif University of Technology/ Department of Mechanical

Engineering; [email protected] 3 M.SC Student, Sharif University of Technology/ Department of Mechanical

Engineering; [email protected]

Abstract

Today, the rolled products, i.e. sheet, plate and foil is used in marine

applications, including platforms, hatch covers, mast, hulls of boats and

superstructures on pleasure boats and the bridges and superstructures of

passenger ships and merchant ships. In this paper, simulation of

asymmetric cold rolling is presented by using explicit analysis procedure.

In asymmetric cold rolling, the workpiese if often bent downwards or

upwards. A two dimensional explicit dynamic finite element model with

adaptive meshing technique has been employed to simulate asymmetrical

condition are here due to different roll radii. To validate the simulation, the

results of simulation and experiment are compared. Effects of asymmetry

due to roll radii ratio and speed ratio mismatch on sheet curvature

variations are discussed. Finally, optimum roll speed ratio in various of

roll radii ratio could be found to produce flat sheet.

Keywords: Asymmetrical rolling, Finite Element Method, Radii ratio,

Speed ratio, Sheet Curvature.



104 | P a g e

New method of jackets installation in Persian Gulf

Seyed Ali Amid1, Majid Sohrabpour2

1 Marine Systems Technologists Limited, Tehran, Iran,

[email protected] 2 Marine Systems Technologists Limited, Tehran, Iran,

[email protected]

Abstract

Steel-structured jacket or template platforms have been extensively

installed in Persian Gulf offshore oil & gas fields. For the jackets in the

water depth range of 40 to 80 meters in this region, utilizing the self-

upending concept has been investigated.

It has been concluded that designing the jackets, implementing the self-

upending process for their installation operations, are economically and

practically more convenient than the usual crane-assisted up-ending

methods. Considering the required number of new installations for the

“new” as well as “brown-bag” projects, and considering the existing

problems and difficulties for the available marine spread, especially ready-

to-work heavy floating cranes, utilizing this concept in the offshore

industry seems to be a considerable break-through. This might have a

significant effect on the renovations and reconstructions required in

offshore oil & gas projects during the post-JCPA2Agreement period.

Keywords: jacket, upending, launch, installation.

Joint Comprehensive Plan of Action 2



105 | P a g e

-the local joint flexibility (LJF) of twoA Study on

joints in jacket substructure of -planar tubular dk

plane bending loads-turbines under inoffshore wind

Ali Ziaei Nejad1, Hamid Ahmadi2

1M.Sc. Student of Coasts, Ports and Marine Structures Engineering, Faculty of

Civil Engineering, University of Tabriz; [email protected] 2Assistant Professor, Faculty of Civil Engineering, University of Tabriz; h-

[email protected]

Abstract

This paper presents parametric equations to predict the local joint

flexibility (LJF) of two-planar tubular DK-joints in jacket substructures of

offshore wind turbines subjected to two critical different types of in-plane

bending (IPB) loads. Finite element (FE) package ANSYS 16 is adopted

to simulate the joint with 8-node solid element. The FE method is verified

based on the existing simple T/Y-joints. An inclusive parametric study is

subsequently conducted to investigate the effect of non-dimensional

parameters on the local joint flexibility coefficient (fLJF). According to the

finding from parametric study, significant design recommendation are put

forward to reduce the LJF of the joint. A set of parametric equations are

developed based on 8-node solid FE models and have been assessed

against the acceptance criteria of the UK DoE. Finally, the comparison of

fLJF between the proposed parametric equations and existing K-joint

parametric equations indicates that the use of the latter to predict the LJF

of two-planar DK-joints may be considerably underpredicting.

Keywords: Local joint flexibility (LJF), Offshore wind turbines,

Parametric equations, Tubular DK-joint, In-plane bending (IPB).






106 | P a g e

Numerical analysis of lateral buckling of pipeline on

the seabed using finite element method

Ali Soukhak Lari1,Ahmad Rahbar Ranji2, Mostafa Bahmani

Shourijeh3

1M.Sc in Marine Structures Engineering, Faculty of Maritime Engineering,

Amirkabir University of Technology; [email protected] 2Associated Professor, Faculty of Maritime Engineering, Amirkabir University

of Technology; [email protected] 3Ph.D. Student in Geotechnical Engineering, Faculty of Civil Engineering,

Shiraz University; [email protected]

Abstract

Submarine pipelines are the primary component of an offshore oil

transportation system. These unburied pipelines that often laid down on

the seabed, maybe put on the uneven seafloor, and this issue with high

temperature and high pressure (HT/HP) of oil inside of the pipeline leads

to large displacement and finally, bending moment and the effective axial

force are created. This way, the cross section of pipeline may leads to

failure and causes the sea environment to be polluted. In this research, a

pipeline on the seabed has been simulated in ABAQUS software, and

various influential factors such as initial imperfection, the friction

coefficient of seabed soil, external and internal hydrostatic pressure and

temperature changes on the process of creating lateral buckling is

evaluated. The results have shown that the friction coefficient of soil has

much more effect than the other parameters. Furthermore, the pipeline is

unstable when the effective axial force is increased.

Keywords:Submarine pipelines, effective axial force, lateral buckling,

initial imperfection, finite element, friction coefficient of seabed soil.



107 | P a g e

Offshore geotechnical engineering sustainability in

Southern Caspian

Amir Rahimi1, Mohammad Hassan Baziar2, Behnam Fallah3

1Graduated Student, School of Civil Engineering, Iran University of Science

and Technology, Tehran, Iran; [email protected] 2Professor, School of Civil Engineering, Iran University of Science and

Technology, Tehran, Iran 3Bachelor student, School of Civil Engineering, Amir Kabir University of

Science and Technology, Tehran, Iran

Abstract

Sustainable development in civil engineering in order to moderate

environmental degradation has become a serious challenge recently. It should

be noted that geotechnical engineering is the most influential subdivision of

civil engineering to accomplish sustainable development and due to rising

energy demand around the world; offshore geotechnical engineering has

become one of the most concerning parts of the sustainable development’s

portrait. Although offshore platforms and geotechnical engineering are not

new concepts in Iran and both of them are used in oil and gas fields in Persian

Gulf for decades, due to higher water depths (325 to 1025 meters) in southern

Caspian Sea, there are some difficulties ahead. In recent years, due to this

difficulty, Iranian companies are losing the fierce competition of oil and gas

extraction in Caspian Sea’s fields. The problem lays within the failure in

sustainable development of offshore geotechnical engineering. In this study,

with regard to water depth of the Caspian Sea and the state of art of designing

offshore platforms, the existing strategies for sustainable development of

offshore platforms in the southern part of Caspian Sea are discussed, though

with more concentration on foundation systems.

Keywords: Sustainability, Offshore platform, Geotechnical

engineering, Foundation, Caspian Sea.



108 | P a g e

Pressure distribution around a near-wall circular

cylinder subjected to steady current

M. A. Salehi1,S. Mazaheri2, M. H. Kazeminezhad3

1Ocean Engineering and Technology Research Center, Iranian National

Institute for Oceanography and Atmospheric Sciences, Tehran, Iran,

[email protected] 2Ocean Engineering and Technology Research Center, Iranian National


[email protected] 3Ocean Engineering and Technology Research Center, Iranian National


[email protected]

Abstract Flow around a circular cylinder near plane wall has been simulated using

Open source CFD codes of OpenFOAM in different flow regimes

(Re=100, 200, 3900) and different gap ratios (G/D= ∞, 1, 0.5, 0.2). Time-

averaged pressure coefficients around a circular cylinder computed and

compared with each others in different cases. Other features of flow

including drag and lift coefficients, Strouhal number, separation angle and

stagnation angle are also computed to describe the state of flow better. It

has been shown that pressure distribution around the circular cylinder can

be utilized to describe the variations in hydrodynamic force coefficients as

well as other features of wake flow such as separation and vortex shedding

phenomenon near a plane boundary. Plane wall effects on pressure

distribution in different flow regimes investigated and it was found that the

inception of vortex shedding suppression can be deduced from pressure

distribution pattern, through pressure gradient between free-stream-side

and wall-side of cylinder. In addition, a rapid increase in the maximum

value of positive pressure coefficient can be concluded.

Keywords: Circular cylinder, pressure distribution, force coefficient,

separation angle, stagnation angle, vortex shedding.



109 | P a g e

Modeling of pile Behavior under impact of ship with

Opensees

2, Reza Naderi1Mohsen Nabati

Shahrood University M.S. Student of Geothechnical Engineering in 1


Associate Professor of Department of Civil Engineering of Shahrood 2

University Technology

Abstract

The realization of the doctrine of the sea axis and enhancement of the

coastal and marine regions contribution in the sustainable development of

the country has been considered in recent years. One of the procedures for

coastal regions development which are less developed, is creating large

and small ports and marine transportation prosperity. According to

importance of marine transportation beside the importance of the mooring

structures in marine transportation, the accurate design of these structures

is deeply felt. One of these structures are mooring dolphin structures that

are designed for considerable amount of lateral forces. The aim of this

paper is dynamic analysis of wharf pile, deck pile and dolphin pile that is

under lateral load and more specifically in this paper, the wharf pile that is

under lateral forces caused by ship impact is studied. Lateral loads are

created mainly due to the tension of the ship mooring strained point and

also the wave and wind reactions to the hulk. For modeling and analysis

of the pile, OPENSEES software is used. Eventually the results of the

dynamic method are compared with existent methods and conformability

of these methods with what occurs in practice is checked.

Keywords: MonoPile, lateral loading, impact, ship, Opensees.



110 | P a g e

Numerical modeling of hydrodynamic responses of

double slotted breakwaters

Akbar Ghanei Ardakani 1, Mahdi Shafieefar 2

1Master Student, Tarbiat Modares University; [email protected] 2Professor, Tarbiat Modares University; [email protected]

Abstract

In addition to securing watercrafts, permeable breakwaters ensure

communication and natural circulation of water between the port and the

sea to eliminate environmental pollution in port areas. In this study, using

Flow-3D software, regular wave interaction with single and double slotted

breakwaters has been modelled. To validate the results of numerical

simulations, modeling was conducted based on experimental study

conducted at University of Tehran. For numerical modeling of fluid, the

volume of fluid (VOF) method was used for free surface modeling and

LES model was used to simulate the turbulence. The structure consists of

an impermeable part on top and bottom and the porosity of the middle part

is 50%. The numerical results appear a reasonable similarity with

experimental results and these results show that the model is applicable for

predicting the hydrodynamic responses of single and double slotted

breakwaters. Also addition of the second wall had not significant effect on

the reflection coefficient, but it had a considerable effect on wave

transmission and energy dissipation coefficients.

Keywords: Slotted Breakwater, Numerical Model, FLOW-3D,

Reflection Coefficient, Transmission Coefficient.



111 | P a g e

Modeling and building of mobil boat hoist

Fateme zolfagharnasab1, Hossein parvareh2 , Mehdi Zayerchi3

1M.S. Naval architect, Persian Gulf University; [email protected] 2 M.S. Naval architect, Persian Gulf University; [email protected]

3 B.S. Mechanic, Arvandan University; [email protected]

Abstract

According to various vessels required to carry out inspection vessel hull work,

blasting, painting, anode investment and overhaul floating out of the water,

one of the basic equipment needed in coastal and Repair Shops is vessel carry

mobile crane. The device is built and used in capacities of 30 to 1,100. Mobile

Boat Hoist devices because of the ability to move on rubber wheels and loads

of retro high strength have good exercise in winemaking, transport and

lunching. For the first time, sanat darya ship building company located in

Khorramshahr attempt to carry out the built of the crane and its cost against

external sample of around 50% to 60% reduced. Year of 1392, with the

construction of the first of these cranes and the appointment of Mustafa 1 for

its, the begin of construction with capacity of 400 tons for this vehicle has

been started, then build of the second prototype with high nominal capacity

to 500 tons by the name of Mustafa 2 start and was completed. Because of the

necessary of using this crane and high costing about buy them from foreign

company decide to study this crane, it's ability tailored to the specific

geographic area. 400 ton mobile boat hoist, modeled in AutoCAD and solid

work software and after initial modeling in software, modeled will build in

scale of 1 to 18 and after of testing it and approved of the model by

classification society and approve of their requirement, we start study of

building original model in real scale located in sanat darya ship building co.

Keywords: blasting, Mobil boat hoist, carry of vessel, Sanat Darya

Company, khorramshahr.



112 | P a g e

Numerical and analytical determine of stress in rivet

joint with double shear

Nabard Habibi1*, Kasra Moradi2 1*Assistant Professor, Mechanical Engineering Department, University of

Kurdistan, [email protected] 2Bachlore Student, Mechanical Engineering Department, University of

Kurdistan, [email protected]

Abstract The rivet joints take place in several types of structure and manufacturing and

therefore, practical importance for determination of the precise manner that

operate in the act is considerable. This subject, attract the idea of the most

experimentalists. Their investigations include determination of connect

strength to fracture and frictional strength for sliding. In present research,

analyses and modeling of double shear for two type of the rivet joints are

down in ABAQUS Software and compare to analytical results. ABAQUS

Software analysis solidification structures as well and displacements, strains

and stresses are studied and analyzed comprehensive. In the present study,

two joints with 4-rivets and 6-rivets in diameters 6 mm and 5 mm respectively.

Applied forces equal to 50, 75, 100, 125, 150, 175, 200, 225 Newton. The

results show that increasing force, increase shear stress and shear stress in

joint with 6-rivets more than 4-rivets. Also, shear stress curves on rivet surface

show that in the first shear force locate in minimum value and by moving on

the path in the rivet surface, shear force increase to maximum value in two

sections of the path and illustrate double shear in rivet surface, and reduce in

the end of path that reach to minimum value. In the side of the rivet that

stressed plate act force on rivet, stress concentration have a maximum value

and by going to the other side, more uniform shear stress. Also, by increasing

force, shear stresses concentration is increased. Results show that analytical

and software numerical methods for studied two connections, they have good

compatibility together.

Keywords: Rivet Joint, Bearing Stress, Shear Stress, Double Shear,

Software Simulation.




113 | P a g e

The study of mooring systems for FPSO and the use of

this platform with turret mooring system in the

Persian Gulf

Seyyed Mohammad Reza Seyyed Abasian1, Mohammad Javad

Ketabdari2

1B.Sc. Faculty of Marine Technology; Amirkabir University of technology;

[email protected] 2Assistant Professor; Faculty of Marine Technology; Amirkabir University of

technology; [email protected]

Abstract

Floating platforms are reliable and cost effective choices to develop and

progress in the oil and gas fields in the deep seas. One types of these

platforms, specially FPSO and FSO are frequently used in harsh weather

conditions and in seas with a depth of more than 1000 m. In the late 60s,

floating platforms were used to extract and storage oil. The idea of using

moored floating platforms and their economic efficiency can be considered

and implemented for shallow and medium waters. Persian Gulf FSU is the

only Floating platform in the field of Iran’s southern maritime borders.

This moored platform is able to store the processed oil. This paper

describes different mooring systems considering their advantages and

disadvantages. Then it explains the components of a turret mooring

system. Finally it discusses the necessity of using this system in Persian

Gulf and the reason why use of these platforms and their mooring systems

will increase in the future.

Keywords: Floating platforms, Mooring system, FPSO, Turret mooring,

Persian Gulf condition.



114 | P a g e

Effect of external water flow on response of cylindrical

shell subjected to under water explosion

2Biglarkhani, and M. 2,3, E. Shad1, 2S. Jalili

PhD Candidate, Mechanical Engineering, Tehran University, Tehran, Iran, 1

[email protected]

Orooj Gostar Aria, Tehran, Iran, info@oga_group.com 2

MSc. Student, Coastal Engineering, Qom University, Qom, Iran, 3

[email protected]

Abstract

This article deals with response of cylindrical shell subjected to loading of

Under Water Explosion (UNDEX) when water current is introduced to the

surrounding environment. Cylindrical shells as one of main basic

structural elements in construction of marine and submarine facilities are

prone to UNDEX threat. Due to vicissitudes of conducting experiments in

this field and also complicated inherent of fluid-solid interaction

phenomenon, numerical models can be used as an effective tool for

scrutinizing the problem. In this study, a submerged thin walled cylindrical

shell and its surrounding water discretized by coupled shell Lagrangian

elements and Eulerian cells respectively. Simulations are performed in

AUTODYN hydrocode. For better perceiving of phenomenon, studies are

done for two various explosive charge stand-off distances. Results show

that introduction of flow to water, can tangibly change the symmetrical

configuration of flow- less problem. Due to intricate interaction of water

flow and explosion bubble, distribution of UNDEX overpressure and

impulse is disturbed and this leads to un-symmetric deformation of

cylindrical shell. Also amplitudes of deflection are reduced obviously by

increasing flow velocity.

Keywords: UNDEX, Cylindrical Shell, Fluid-Solid interaction,

AUTODYN.




115 | P a g e

Study of several parameters effect on composite tube

under bending and axial combined loading considering

internal pressure

Nabard Habibi1*, Ehsan Derakhshan2 1*Assistant Professor, Mechanical Engineering Department, University of

Kurdistan, [email protected] 2Bachlore Student, Mechanical Engineering Department, University of

Kurdistan, [email protected]

Abstract

The extensive use of composite materials in several industries affect the very

good performance, strength to density and hardness to density. Possibility of

increasing for this characteristics using technology and various construction

methods, the manufacture of these materials has increased. In this research,

the tube made of Steel, Cast-iron, Copper and Plastic is considered and

coating using glass-epoxy under fiber different angles with 2, 4, 6 and 8 layers

subjected bending and axial combined loading and similar internal pressure

analyzed in ABAQUS software. For steel tube with several layers of coating,

calculated analytical result and compared to software numerical results. The

results show that maximum von misses stress (MPa) in coating with double

layers in fiber angle (30,45) for Copper, Cast-iron and Steel tubes and take

place in fiber angle (0,45). In tube coating using glass-epoxy and 4-layers,

maximum von-misses stress located in fiber angle (30,45) Symmetric for Copper,

Cast-iron and Steel tubes and (0,45) Symmetric fiber angle for Plastic tube.

Maximum deformation of tube wall in millimeter belongs to plastic tube and

locate in coating with double layer for Plastic, Copper, Cast-iron and Steel

tubes. Minimum deformation of tube wall belongs to 8-layers in coating. Also,

maximum von-misses stress in considered layers with glass-epoxy for

Copper, Cast-iron and Steel tubes it’s the same approximately and the greatest

difference is related to plastic pipe (tube), and increasing the number of layers

reduced stress value. According to results, the number of layers in coating

with glass-epoxy equal to 4 and 6, there most consistent and compatibility

between software numerical and analytical methods.

Keywords: Composite materials, Steel tube, Von-misses Stress, Coat,

Software Simulation. Analytical solve



116 | P a g e

Dynamics modeling and control of mooring lines while

cargo vessels loading

Hassan Sayyaadi 1 , Roya Rasa2

1Professor, Center of Excellence in Hydrodynamics and Dynamics of Marine

Vehicles/ Sharif University of Technology, [email protected] 2M.Sc. Student, School of Mechanical Engineering/ Sharif University of


Abstract

Container ships should only make very small horizontal movements at the

berth for efficient (off) loading of containers. This is especially a concern

in ports directly facing the open ocean, where high swells at sea can cause

harbor oscillations and low-frequency surge motions of the ship. A

Developed mooring unit, the MoorMaster™, which replaces conventional

mooring lines is addressed here. The hydraulics of the system have a strong

deducting effects on the motions of the moored ship. Measurements at a

container terminal port have shown that the surge motion of container

ships was reduced from an amplitude of 1 meter to an amplitude in the

order of 5 centimeters, while using MoorMaster™ units. However before

MoorMaster™ units can be installed with confidence in other (new)

terminals and comparisons can be made with other mooring systems, the

characteristics of MoorMaster™ units should be included in numerical

models for motions of moored ships. This paper addresses the operation

mechanism of MoorMaster™ units. MoorMaster™ units act in two

different states that in this paper both of them are explained and the results

are given in a series of figures.

Keywords: Mooring, MoorMaster units, Shore-based mooring, Vacuum

based automated mooring technology, MoorMaster automated mooring.




117 | P a g e

Numerical simulation of vortex induced vibration of

three cylinders in regular triangle arrangement at high

heynolds humber

Hassan Sayyaadi 1, Abolfazl Motekallem2

1Professor, Center of Excellence in Hydrodynamics and Dynamics of Marine

Vehicles, Sharif University of Technology/ Scholl of Mechanical Engineering;

[email protected] 2 M.Sc. student, Sharif University of Technology/ School of Mechanical

Engineering; [email protected]

Abstract

This paper presents a three dimensional simulation of the vortex induced

vibrations of three elastic cylinders in regular triangle arrangement at high

Reynolds number. The motion of every single cylinder, which is free to

oscillate in two degrees of freedom in a uniform flow and has the same mass

and natural frequency in both X and Y directions, is modeled by a mass spring

damping system. The displacement and lift forces for each cylinder are

analyzed with five spacing ratios L/D changing from 2.5 to 6.5. The results

indicate that the downstream cylinders are usually undergone serious

fluctuating lift forces. It is found that the simultaneous resonance in the X and

Y directions may occur for the downstream cylinders. The stream wise

oscillation of downstream cylinders could be as large as 0.54D, and the

maximum transverse amplitude of three cylinders can reach to 2.30D. It is

indicated that the cross flow oscillation amplitude of three cylinders

significantly increased compared with the flow induced vibration of a single

elastic cylinder and the stream wise oscillation of downstream cylinders is

unneglectable for vortex induced vibration of multi cylinder system.

Keywords: Fluids Structure Interaction (FSI), Workbench System

Coupling, Vortex Induced Vibration, Numerical Method, Karman Vortex

Shedding.



118 | P a g e

Engineering critical assessment of offshore pipelines

under operational loading phase according to bs 7910

guideline

Seyed Mohammad Hossein Sharifi1, Mehran Kaveh2, Hamed

Saeidi Googarchin3

1Assisstant Professor, Faculty of Marine Science, Petroleum University of

Technology, Abadan, Iran; [email protected] 2M.Sc Student, Faculty of Marine Science, Petroleum University of

Technology, Abadan, Iran; [email protected] 3 Assistant Professor, School of Automotive Engineering, Iran University of

Science and Technology, Tehran, Iran; [email protected]

Abstract

Offshore pipelines are an efficient long-distance transportation method for

oil and gas. These are usually constructed by the use of girth welds, while

welds may naturally contain flaws. Hence, it is essential to inspect the

fracture response of girth welds in order to check the structural integrity of

the pipeline. One of the guidelines that is using wide spread for

investigating the fracture response of steel structures is BS 7910 which is

based on Engineering Critical Assessment (ECA) method. In this paper

Engineering Critical Assessment (ECA) of offshore pipeline girth welds is

done according to BS 7910 through Crackwise software and the influence

of several parameters on ECA is presented. It is concluded that Influence

of misalignment on axial internal surface flaws is more significant than on

axial external flaws. Furthermore it is observed that internal surface flaws

have always larger values for tolerable defect heights than external surface

cracks. In addition, circumferential surface flaws have evermore larger

amount of acceptance level in defect heights than axial flaws.

Keywords: Engineering critical assessment (ECA); offshore pipeline;

surface cracks; girth weld misalignment, BS 7910.



119 | P a g e

Investigation of the effect of a buoy exterior shell

parameters on the surface temperature in conjunction

with internal thermal source

Mahdi Mahdavikhah1, Mohammad Alaghe band2

1MSc, Ferdowsi university of Mashhad; [email protected] 2MSc, Iran University of Science & Technology; [email protected]

Abstract

In this paper, the thermal analysis of the communication and

meteorological buoy is presented in conjunction with internal thermal

source. Usually, heat is generated as a result of electrical equipment in the

buoy, which it is not dissipated correctly, the equipment would be

damaged. Also increasing in surface temperature results in increasing the

probability of the buoy detection, which must be reduced. There are many

parameters affecting the surface temperature of a buoy flouting on sea

water. In this paper, the effect of coating and roughness of the surface on

the buoy surface temperature is investigated. The simulation is done using

fluent software in 2D and 2phase considering the solar radiation effect

Keywords: Buoy, Surface temperature, Properties of surface buoy,

Thermal analysis .



120 | P a g e

Thermal analysis of the body of a buoyant buoy floated

in sea considering the solar radiation

Mahdi Mahdavikhah1, Amir Mohammadhosseini2, Mohammad

Alaghe band2

1MSc, Ferdowsi university of Mashhad; [email protected] 2MSc, Ferdowsi university of Mashhad; [email protected] 3MSc, Iran University of Science & Technology; [email protected]

Abstract

Communication and meteorological buoy has many marine applications

and must be considered many parameters in its design such as structure,

cable and stability. Thermal analysis is one of the cases which must be

considered in design. The design must be such that high temperatures don’t

damage the interior electrical equipment and also buoy surface don’t have

high temperatures to prevent from detection. In this paper the surface

temperature is compared in different conditions by the 3D time dependent

FEM in 2 phases. The effect of wave height, material properties and solar

radiation on the surface temperature is computed.

Keywords: Thermal analysis, Buoy, Solar radiation, Body properties.



121 | P a g e

The role of organizational involvement, supplier

management, product life cycle and product recycle on

green supply chain management in offshore industry

(case study: iranian offshore engineering and

construction company)

Jalal HaghighatMonfared1, *Fatemeh Karimi2 1Assistant of Management College, Islamic Azad University, Central Tehran

Branch, [email protected] 2Master of Science in Industrial Management, Islamic Azad University, Central

Tehran Branch, [email protected]

Abstract

The main objective of this research is to identify and prioritize “green

supply chain management” in the offshore industry and subsequently the

identification of following indicators has been considered as secondary

objective. The study was conducted in three phases. The first phase of this

research, to study the research literature and expert opinion in offshore

industry, effective factors (25 items) on “green supply chain management”

based on four dimensions “organizational involvement, product life cycle,

product recycle and supplier management” was identified and the first

questionnaire was prepared. After data collection and analyzing and

determination of population average and indicators importance, 12 items

were selected among 25 indicators. In the second phase, based on

DEMATEL technique to determine the extent and impact of indicators,

cause and effect network identification and locating casual factors of the

network were drawn. Finally, in the third phase the results of previous

stage, according to ANP technique to determine the priority of indexes

other than the preferred ratios to the target, the weight of determined

dimensions and indicators and the priorities.

The research results suggest that the “management of suppliers” and the

“organizational involvement “ and the “employee involvement” and “

supplier identification and evaluation” respectively have the maximum

weight and paramount importance in offshore industry.

Keywords: Analytical Network Process Model (ANP), Multi Criteria

Decision Making, Supply Chain Management, Green Supply Chain

Management, DEMATEL Technique.



122 | P a g e

Experimental investigation of using tuned mass

damper in response control of tension leg platform

Latif Nikmehr1, Mohammadreza Tebeshpour2

1 Master Student, Sharif University of Technology/Center of Excellence in

Hydrodynamics and Dynamics of Marine Vehicles; [email protected] 2 Assistant Professor, Sharif University of Technology/Center of Excellence in

Hydrodynamics and Dynamics of Marine Vehicles; [email protected]

Abstract

In this study, performance of Tuned Mass Damper (TMD) as a passive

structural control system to reduce the surge dynamic response of Tension

Leg Platform (TLP) under wave load, evaluated and analyzed

experimentally. Mitigation of platform response under wave load is

important since wave load is the dominant environmental load in seas and

oceans and reduction in response amplitude of platform cause reduction in

stress range in tendons and therefore increases the fatigue life of mooring

lines. In this study, tests was performed on a TLP model equipped with the

TMD that was designed according to the dynamic characteristics of the

model platform. Regular waves with different periods were used to excite

the system. The results indicate that using the aforementioned damper in

reducing the surge response of TLP within normal waves with the classic

concept of the TMDs hence adjustment of the damper frequency to the

structure frequency, doesn’t have efficiency.

Keywords: Tension Leg Platform, Tuned Mass Damper, Passive

Control, Dynamic Response, Response Amplitude Operator, Wave Load.



123 | P a g e

Dynamic analysis of TLP in intact and damaged

tendon conditions

Ebrahim Malayjerdi1, Ali Ahmadi2, Mohammad Reza

Tabeshpour*3

1MSc, Sharif University of Technology; [email protected] 2PhD student, Sharif University of Technology; [email protected]

3Assistant Professor, Sharif University of Technology, Center of Excellence in


Abstract

Stability of Tension Leg Platforms (TLP) is sensitive to tendons situations.

Therefore, behavior and exact calculation of stiffness matrix of TLP is

important for dynamic analysis and investigation of TLP in intact and

damaged tendon conditions is necessary to accurate and reliable design of

TLP. In this paper deals with dynamic analysis of TLP when tendons are

intact and one or three tendons are damaged. Static stability of TLP in

damage condition has been studied and static offsets have been estimated,

then stiffness of surge, heave and pitch has been derived. Finally,

responses of heave and pitch for three load conditions have been predicted.

Keywords: TLP, damage condition, tendon.



124 | P a g e

Analytical and conceptual investigation of mathieu

instability in SPAR

Vahid Alipour Sarabi1, Mohammad Reza Tabeshpour*2

1MSc, Sharif University of Technology; [email protected] 3Assistant Professor, Sharif University of Technology, Center of Excellence in


Abstract

In vibrational characteristic of a structure, a force with a period of the exact

natural period of that structure causes resonance phenomenon. In SPAR

platform when pitch natural period is twice than that of heave, a kind of

resonance happens called Mathieu instability. This happens because of

non-linear behavior of system and coupling between heave and pitch.

Because of perturbation term, investigation and the effects of that

perturbation term on responses is a considerable subject. In this paper

Mathieu instability is investigated and discussed conceptually.

Keywords: SPAR, Mathieu instability.



125 | P a g e

Impact of different configurations and increasing

difficulty bracing elements in viscous damper

performance

Mostafa Vaezi1, Ali Pourzangbar2, Manouchehr Fadavi3,

Ahmad Rahbar Ranji4

1Amir Kabir university,; [email protected]

2 Azar Paya Sazeh Hydraulic Co; [email protected] 3 Amir Kabir university; [email protected] 4 Amir Kabir university; [email protected]

Abstract

Structures begin to vibrate in various modes due to dynamic loads like

earthquake, wind or wave loads. The amplitude of these vibrations is

highly dependent on dynamic loads. Mandatory response of the structure

against these loads is obtained by multiplying dynamic magnification

factor by the value of static deflection. Locating dampers at different levels

of the structure cause them to reduce the Dynamic Magnification Factor

(DMF) and the mandatory response of the structure. The amount of this

reduction depends on the efficient performance of dampers. The best

performance of dampers is resulted when the damper gets its full capacity

of energy distribution. In addition to dampers configuration, the stiffness

of bracing elements can improve the dampers performance and reduce the

vibration amplitude. In this paper, the dampers configuration and the

impact of braces stiffness on the performance of viscous damper is

investigated. The results indicate that Chevron configuration is the best

one for viscos dampers since it results in the low damping coefficient and

large resistant forces. Furthermore, increasing the stiffness of elements can

improve the dampers performance by increasing the deflection and finally

the damper’s axial deflection speed.

Keywords: Viscous damper; Damper configuration; Dynamic

Magnification Factor (DMF); Damper performance






126 | P a g e

Sensitivity analysis of offshore jacket platforms in

persian gulf

Ehsan shahsavari1, Abdolrahim Taheri2

1MSc Student, Petroleum University of Technology, Department of offshore

structural engineering, Iran; [email protected] 2Assistant Professor, Petroleum University of Technology, Department of

offshore structural engineering, Iran; [email protected]

Abstract

Failure probability and reliability of structures are very important in

structural design of offshore platforms, specifically when the variables are

greatly random. Sensitivity analysis is a primary step to perform reliability

analysis. In this paper, sensitivity of some parameters of offshore

platforms subjected to extreme environmental condition is studied. In this

regard, parameters such as wave height, surface current velocity, wind

velocity, drag and inertia coefficients are considered as random variables.

Tornado diagram analysis is applied to perform sensitivity analysis.

Nonlinear collapse analysis (pushover method) is performed to obtain the

response of platform under different input values. SACS program which is

a finite element program is used to perform pushover analysis. Reserve

Strength Ratio (RSR) is considered as a representation of structural

response. Also, in-place analysis is used to show the sensitivity of base

shear to input parameters. It is concluded that among random parameters,

wave height is the most dominant parameter in the response of offshore

platforms due to extreme environmental condition and drag coefficient

also has a relatively great influence in response rather than the other three

parameters.

Keywords: sensitivity analysis, offshore platform, pushover analysis.



127 | P a g e

In-Place strength evaluation of existing fixed offshore

platform located in persian gulf with consideration of

Soil-Pile interactions

Rasoul Sadian1, Abdolrahim Taheri 2

1MSc Student, Petroleum University of Technology, Department of offshore

structural engineering, Iran; [email protected] 2Assistant Professor, Petroleum University of Technology, Department of

offshore structural engineering, Iran; [email protected]

Abstract

Offshore jacket structures have been used in petroleum industry for decades.

Due to increasing the age of operating platforms, structural damages will be

generated by corrosion, fatigue, ship impacts and other reasons.

Improvements in the oil and gas recovery from several fields have raised the

interest for using these platforms well beyond their intended design life. Life

extension of an existing jacket platform needs proper reassessment of its

structural members, such as piled foundations. This paper represents a case

study of the existing fixed offshore platform located in Persian Gulf by in-

place strength analysis. The objectives of this analysis are to verify whether

the platform can meet the structural requirements, as per API RP 2A and

AISC, for the In-place extreme met-ocean loading. The structural assessment

is performed based on the best estimates of the existing conditions of the

structure data on the future corrosion allowance. Since the response of the

jacket platform to the environmental loads is intensely affected by the pile soil

interaction, in current study the foundation is modelled using uncoupled non-

linear soil springs acting along the piles length. The load cases, which include

all situations relevant in the In-place analyses are taken into account. Results

of the In-place analysis of the drilling platform indicate that the jacket

structure does not assure the code provisions.

Keywords: Existing Fixed Platforms, In-place Analysis, Pile-Soil

Interactions, Persian Gulf.



128 | P a g e

Fatigue analysis of offshore allowable free span length

E. Mahdavi1, S. Sahifi2

1 Parto Tadbir Pars, Tehran, Iran, P. O. Box: 1661719971,

[email protected] 2 Parto Tadbir Pars, Tehran, Iran, P. O. Box: 1661719971, [email protected]

Abstract

Fatigue design of subsea pipelines in free spanning is interesting for subsea

engineering so, calculating of free span length is important to obtain

fatigue life of pipelines which is critical factor in preventing of fatigue

damage during project life time. There are many limitation of free span

length for offshore pipelines to calculate fatigue life. This is based on the

stresses occurred due to vortex shedding induced oscillation in a free span.

In this paper, it is intended to analyze offshore pipeline fatigue based on

DNV code with considering type of joint welding. Type of welding can

effect on S-N curve and then significant influence on fatigue life. For a

case study, allowable free span of 13th south phase pipeline will be

calculated. In this paper, soil type is soft clay and pipe in free spanning

considered fixed-pined. Also, hydrodynamic forces such as cross flow and

in-line flow for eight directions are studied.

Keywords: free spanning, fatigue, offshore pipeline, vortex shedding.





129 | P a g e

Cross-flow vortex induced vibration fatigue analysis of

persian south gas field subsea pipelines due to multi-

spanning

Mahdi shabani1, Abdolrahim taheri2

1 M.Sc. student of Petroleum University of technology, department of offshore

engineering; [email protected] 2 Assistant- Prof. of civil Petroleum University of technology, department of

offshore engineering; [email protected]

Abstract

Free-span in subsea pipelines occur at manmade supports, uneven seabed

or pipeline crossing. Free spanning may induce pipeline vibration due to

vortex shedding which makes pipeline susceptible to some failures such as

fatigue, fracture, etc. Free spanning analysis is an important subject

because fatigue is the most effective factor in reducing the pipeline design

life. Free spanning analysis includes static analysis and dynamic analysis.

DNV-RP-F105 suggests a methodology of dynamic analysis for long

pipeline with multi-mode responses, but the fatigue analysis method for

multi-modes is not detailed. In addition, the fatigue analysis of multi-

spanning pipeline is not clear. Based on the methodology of DNV-RP-

F105 fatigue life relates to natural frequencies of pipeline, the method of

determination of effective natural frequencies still is not clear.

In this paper, a fatigue analysis for multi-spanning pipeline in Persian

south gas field is performed based on VIV analysis. ABAQUS FE model

is developed to obtain the stress distribution and the natural frequency of

each vibration mode for spanning pipeline on seabed with three multi-

spans, then the fatigue analysis of VIV is carried out for the spanning

pipeline based on DNV-RP-F105.

Keywords: subsea pipelines, fatigue analysis, natural frequency, multi

spanning, vortex shedding.





130 | P a g e

Dynamic response of tension leg platforms with special

importance to tendon disconnection

Mohammad Reza Mahmoodi1, Mohammad Reza Tabeshpour2,

Ali Ahmadi3

1M.S. Student, Sharif University of Technology;

[email protected] 2Assistant Professor, Sharif University of Technology; [email protected] 3Phd Student, Sharif University of Technology; [email protected]

Abstract

The tension leg platform is one of the compliant structures which are

generally utilized for deep water oil explorations. With respect to the

horizontal degrees of freedom, it behaves like a floating structure moored

by vertical tethers which are pretension due to the excess buoyancy of the

platform, whereas with respect to vertical degrees of freedom it is stiff and

resembles a fixed structure and is not allowed to float freely. A sudden

disconnection of a tendon causes a change of stiffness and unbalance of

forces and moments of the total system. This paper primarily addresses the

recently published numerical and experimental studies of the behavior of

the tension leg platforms with damaged tendons. The second objective of

this study is to present a numerical study of the effect of tendon

disconnection on global performance of ISSC TLP. It is found that the

mean heave position and pitch angle moved to a permanent higher level

after losing one tendon. It is also seen that the tension of the neighboring

columns can be increased while the tension on the diagonal column

tendons decreased.

Keywords: Tendon Disconnection, TLP, Numerical Study, Dynamic

response.



131 | P a g e

Fatigue reliability of tension-leg platform tendon under

random wave load

Negin Nazari1, Mohammad Reza Mahmoodi2, Mohammad

Reza Tabeshpour3, Mojtaba Mahsuli4 1M.S. Student, Sharif University of Technology; [email protected]

2M.S. Student, Sharif University of Technology;

[email protected] 3Assistant Professor, Sharif University of Technology; [email protected]

4Assistant Professor, Sharif University of Technology; [email protected]

Abstract

The primary objective of this paper is probabilistic quantification of the

fatigue life of tension-leg platforms (TLP) using reliability methods. The need

for such methods stems from the significant uncertainty in the loads exerted

on offshore structures. The scope of this paper is limited to the study of fatigue

in TLP tendons. For this purpose, nonlinear force time history response of the

TLP tendon under random wave loads is computed and the damage due to

fatigue is estimated in accordance with the Palmgren-Miners rule. Assuming

a Rayleigh distribution for stress variation and ten different sea states, the

ultimate fatigue damage is computed by accumulating the damage over all

individual sea states. This cumulative damage enters the limit-state function

that is based on the Palmgren-Miners rule. Prevailing sources of uncertainty

in this problem are those in the estimation of fatigue stresses, fatigue strength,

and the Palmgren-Miners rule. Finally, reliability analysis is carried out for

five different service lives using the first- and second-order reliability

methods (FORM and SORM) and Monte Carlo sampling. The results indicate

that FORM computes the probability of failure sufficiently accurately. It is

concluded that the probability of failure increases drastically with the service

life. The importance vector from the sensitivity analysis in FORM reveals that

the model error is the most influential source of uncertainty on the probability

of failure.

Keywords: Tendon, Tension-leg platform, Fatigue, FORM, Monte

Carlo sampling



132 | P a g e

Pneumatic breakwater possibility of using them for

mooring ships in the Persian Gulf coastal areas and

offshore Mehdi piroozi 1 Mohammad javad ketabdari 2, Milad bamdadi3

, Hanife farooghi4 1MSc. Student, Maritime Department of Amirkabir University, Tehran, Iran,

[email protected] 2 Faculty Member, Maritime Department of Amirkabir University, Tehran,

Iran, [email protected] 3 MSc. Student, Maritime Department of Amirkabir University, Tehran,

Iran, [email protected] 4 MSc. Student, Maritime Department of Amirkabir University, Tehran,

Iran, [email protected]

Abstract Pneumatic breakwater is a kind of wave energy dissipation structures to be able to

reduce some of the wave energy. The breakwater by creating an air bubble in the

middle column opposite to the flow of water to make waves and wave energy

dissipation and its height is reduced. Quick Install low occupation and lack of space

is a problem in shipping the benefits of pneumatic breakwater. The major

disadvantage of this breakwater is that half of the energy is wasted exhaust air system.

This method can be used with a range of short wavelengths to be damped. For optimal

use of this breakwater, can be combined by floating breakwater. Breakwater’s hybrid

physical or numerical modeling to evaluate the function in more depth is required. At

close range to the beach in greater depth and to temporarily carry out this type of

crusher is economically. It connects to ship crusher for DAHET and connected to the

dock ATAB cannot be used. Using hybrid system, makes the transfer of cruise ships

passengers to tourist beach continuously and securely, even in adverse sea conditions

continued to be quiet. Case study showed that, except for Persian Gulf area between

longitude and latitude51 ° to 57° E and24° to28 ° N 14 km off the coast of Parsian

port in northwest to 30 kilometers from the coasts of Lenge port e and 6 km off the

coast of Dubai to Abu Dhabi in southeast and from 12 km off the coast of kargan

port to Cirik in northeast and 130 km off the east coast of Qatar leads generated.

Keywords: Pneumatic breakwater, Air bubble column, Wave energy

attenuation, Hybrid breakwater.



133 | P a g e

hindcasting of significant wave height in Gulf of

Mexico using neural network and M5’ model tree

Homayoon Ahmadvand1

1 Department of Physical oceanography, Faculty of Marine Science,

Khoramshahr university of Marine Science and Technology, Khoramshahr,

Iran; [email protected]

Abstract

Hindcasting of wave parameters is necessary for many applications in

coastal and offshore engineering and is generally made with the help of

sophisticated numerical models. Different forecasting methodologies have

been developed using the wind and wave characteristics. In this paper,

artificial neural network (ANN) and M5’ model tree is used to forecast the

wave height for the next 3, 6, 12 and 24 lead number in the East Gulf of

Mexico. The data set used for developing models comprises of wind and

wave data gathered in 2011. To determine the effective parameters,

different models with various combinations of input parameters were

considered. Parameters such as wind speed, direction and wave height,

direction were found to be the best inputs. Furthermore, using the wind

and wave directions showed better performance. Results indicate that error

statistics of model trees and ANN were similar, while ANN was

marginally more accurate than model tree. In addition, if wind speed as

well as wind and wave direction are used as model inputs, the accuracy

of the forecasting is highest in 24 lead number.

Keywords: Significant wave height- Neural Network, model tree, Gulf

of Mexico.



134 | P a g e

Hydrodynamic and sedimentation study in Noshahr

port

Meysam bali1, Majid Jandaghi Alaee2, M. H. Moeini3

1Pouya Tarh Pars Consulting Engineers Company; [email protected] 2Pouya Tarh Pars Consulting Engineers Company; [email protected]

3Pouya Tarh Pars Consulting Engineers Company; [email protected]

Abstract

Noshahr port is one of the most important commercial ports of Iran in the

Caspian Sea. The normal operation of the Noshahr port has been affected

by sedimentation problems during the recent years. Due to the great

potential rate of the long-shore sediment transport in this area associated

with the input of the river sediments and sea level changes. In this research,

the current, wave and sediment measurement have been applied to study

of port hydrodynamic and the calibration of numerical simulations. The

current observations show that there are 2 dominant current directions near

the Noshahr coasts: west to east (western currents) and east to west

direction (eastern currents). Therefore the western current is more

important than eastern current and it has an important role in sedimentation

of Noshahr port. The numerical model has been applied to simulate the

current and wave near the harbor. The applied model is Mike 21 which

calibrated by using of measurement data. The results have been shown that

different factors have effective role in sedimentation of Noshahr port.

Keywords: Noshar Port, Sedimentation,Vortex,



135 | P a g e

Ultimate capacity of offshore jacket platforms by using

beam elements, considering the effects of global and

local buckling of the elements M.R. Tabeshpour1, M.H. Erfani2, H. Sayyadi3

1 Assistant Professor, Center of Excellence in Hydrodynamics and Dynamics of

Marine Vehicles, Mechanical Engineering Department, Sharif University of

Technology, [email protected] 2 Ph.D. Student, Center of Excellence in Hydrodynamics and Dynamics of

Marine Vehicles, Mechanical Engineering Department, Sharif University of

Technology, [email protected] 3 Professor, Center of Excellence in Hydrodynamics and Dynamics of Marine

Vehicles, Mechanical Engineering Department, Sharif University of

Technology, [email protected]

Abstract Accurate estimation of the ultimate capacity of offshore structures including

jacket type offshore platforms, in order to achieve structural performance

levels and determine their ductility, is of great importance. Formation of

fatigue cracks at the joints, corrosion of members, environmental loads and

damages caused by accidental dynamic loads such as impacts of vessels and

floating bodies will result in change of the ultimate capacity of these structures

over time of their life. These cases should be considered in calculating the

ultimate capacity of the offshore platforms at any given time of their life.

However, accurate modeling of the global and local buckling of compression

members is important at any time of calculating the ultimate capacity.

Buckling modes and deformations due to local buckling will be considred, if

the compressive braces are modeled by Shell or Solid elements and the

imperfections are applied. The purpose of this paper is to achieve the correct

compressive behavior of Beam type elements. Abaqus finite element

computer software is used for this purpose. The buckling envelope for Frame

elements derives from Marshall Strut theory. The Marshall strut envelope

defines the postbuckling damaged elasticity model and the hysteretic loop

response. Finally, by using this modified behavior of frame elements, the

effects of local buckling in compressive braces can be considered.

Keywords: Jacket type offshore platforms, Buckling, Marshall Theory,

Compressive behavior, Ultimate capacity.

https://www.researchgate.net/institution/Sharif_University_of_Technology/department/Department_of_Mechanical_Engineering

https://www.researchgate.net/institution/Sharif_University_of_Technology










Instrumentation and control methods Marine navigation, communication and electronics Composite and new material Robotic and underwater equipment Fishing and aquaculture methods Marine renewable energy New Methods of Exploitation for Marine Biological

and Non-Biological Resources

Marine renewable energyand new technologies9 Instrumentation and control methods Marine navigation, communication and electronics Composite and new material Robotic and underwater equipment Fishing and aquaculture methods Marine renewable energy New Methods of Exploitation for Marine Biological

and Non-Biological Resources

Marine renewable energyand new technologies9



136 | P a g e

Robust Adaptive Sliding Control for the Trajectory

Tracking of an Unmanned Underwater Vehicle

Ahmad Mahdian Parrany1, Alireza Arab Solghar2

1Invited Lecturer, Department of Mechanical Engineering, Faculty of

Engineering, Vali-e-Asr University of Rafsanjan, Iran;

[email protected] 2Faculty Member, Department of Mechanical Engineering, Faculty of

Engineering, Vali-e-Asr University of Rafsanjan, Iran; [email protected]

Abstract

This study addresses a robust adaptive sliding control scheme for the

trajectory tracking of an unmanned underwater vehicle (UUV). First of all,

a general dynamic model which is widely used for the dynamic modeling

of UUVs is presented. The presented model is simplified by applying some

assumptions to facilitate the design of controller. Since then, an adaptive

sliding control scheme is proposed for the trajectory tracking of UUV and

its stability is proved by Lyapunov stability theory. After which a dead-

zone modification is applied to the designed adaptive control scheme in

order to make it robust against model uncertainties and environmental

disturbances. Finally, the robustness and efficiency of the proposed control

strategy are demonstrated through simulation results. Also, the effect of

design parameters on the performance of the controller is investigated.

Keywords: Adaptive sliding control, Dead-zone modification, Robust

adaptive control, Trajectory tracking, Unmanned underwater vehicles

(UUVs).



137 | P a g e

Numerical study of the hunter turbine performance in

order to generate electricity from marine currents and

waves

Amir mansourian1

1Mater of science mechanical engineering, ferdowsi university of mashhad;

[email protected]

Abstract

This project is concerned with the study of a novel design of vertical wind

turbine, called hunter turbine. Rotor with 6 blades selected and tested for

calculate power coefficient and Torque produce with rotor. the kinetic

energy of the incident flow can be effectively transferred into the

movement of the rotor. Experimental data shows when the blades open or

closed. Small windward set top of the blades that causes blades early

opening and closing which increase the rotational speed and power

coefficient. Three-dimensional steady CFD was then used to obtain

detailed information about the flow field, including pressure and velocity

contours, and the pressure distribution on the surface of the blades with

Fluent. At the end result shows the hunter turbine has good efficiency at

the special rang of flow coefficient.

Keywords: Vertical wind turbine, Hunter turbine, Flapping blades,

Power coefficient, CFD.



138 | P a g e

Economic study of developing tidal stream energy in

Persian Gulf; a case study of Hengam Island

Soheil Radfar1, Roozbeh Panahi2, Siyavash Filom3

1MSc Student, Marine structures group, Tarbiat Modares University.

[email protected] 2Assistant Professor, Marine structures group, Tarbiat Modares University.

[email protected] 3MSc Student, Marine structures group, Tarbiat Modares University.

[email protected]

Abstract

Nowadays, political, economic and environmental crises and issues

attracted scholars to finding suitable alternatives to solving world’s energy

problems. One of these alternatives is ocean renewable energies. One of

these ocean renewable energies is tidal stream energy. Having a better

sense of this type of energy, it is worth to note that a power output of 1.2-

1.4 MW is adequate to supply electricity to approximately 1000 local

households and avoids emission of 5000 tons of CO2 in a year. This study

aims to investigate competitiveness of this type of energy with other source

of energies focusing on Persian Gulf and to define the amount of required

investment. Investigations in “Hengam Island” show that the LCOEs in

this zone is 182.253 GBP/MWh. According to announced REFiTs rate of

Iran Ministry of Energy, payback period for this zone is 18.77 year.

Therefore more supply-push policies are need to encourage investors.

Keywords: Energy, Tidal Stream, LCOE, Hengam Island, REFiT.



139 | P a g e

The optimization of the utilized organic Rankin cycle

in waste heat recovery from the marine diesel engine

exhaust

M.Akbari Vakilabadi, M.Shams Ghoreishi, S.Nezhadhashemi

Abstract:

In containerships, the supply of electrical energy to operate electrical

systems is done through burning of fuel and conversion of the produced

power into electricity by means of multiple generators. Given that the

exhaust smoke themperature of the outlet of vessel’s engines is in the range

of (200-300) degree of Celsius, electrical power can be produced through

energy recovery of the exhaust smoke. Waste energy prevention

programmes, are importand subjects that result into preventing of loss of

the generated energy of engine which can be used to provide part of the

electricity needed in the whole vessel. One of the ways in recent years to

exploit the waste heat of stacks which are taken into consideration, is the

use of organic rankine cycle(ORC). For this purpose, by using the

thermodynamic simulation and EES programming, different arrangements

of a cycle from the first and second law of thermodynamics perspective

for fluids such as; R123, R124, n-butane, n-pentane, n-pentane, n-heptane

and Toluene are evaluated and compared and at the end the best

arrangement from thermodynamic viewpoint for each of these fluids are

introduced. Then, the effects of important thermodynamic parameters such

as; the turbine inlet pressure, the maximum cycle temperature and the

condenser temperature on the first and second law efficiencies and mass

flow rate of the working fluid are studied.

Key woeds:Low temperature energy sources, waste heat recovery,

organic Rankine cycle, organic fluids



140 | P a g e

Analysis of heat energy recovery for vessel’s exhaust

waste using organic rankine cycle

M.Akbari Vakilabadi, M.Shams Ghoreishi, V.Alizadeh,

A.Imantalab

Abstract

Due to the space limitations for locating generators which provide electricity,

maximum productivity from fuel energy to produce more electrical energy as

auxiliary source is necessary. To achieve this organic Rankine cycle (ORC)

is used on the exhaust line of engines.Through the utilization of waste heat,

as an independent auxiliary source, parts of required vessel electricity is to be

provided. A source of auxiliary energy can provide the required electricity

from generator circuit. In addition to produce more electricity it could also

guarantee the required electricity in emergency conditions

partially.According to the temperature range of engine exhaust gas (About

250 to 350 ° C.) one can increase the engine’s efficiency. For this purpose,

Between simple arrangement (M), with recovery (R), as well as feed water

heaters (H) or with regenerative feed water heaters (F) for working fluids

R114 ،n-butane ،n-pentane ،n-pentane ،n-heptane and toluene the optimum

arrangement for the working fluid to produce net power of 100 kw, in the

technical software ASPEN HYSYS is simulated. Finally nominated cycle is

technically optimized using the objective function of the system’s thermal

efficiency via optimizer ASPEN of HYSYS software. After cycle’s technical

optimization the cycle is also optimized economically via objective function

cost and the exergoeconomic methods.

Keywords: Vessel, Low-Temperature Energy Source, Waste Heat

Recovery, Organic Rankine Cycle, Numerical Simulation.



141 | P a g e

Influence of tool travers speed on microstructural and

mechanical properties of friction stir welded carbon

steel.

, Ali 3sayebani, Misbah 2, Islam ranjbar nodeh1Mahdi faraji4asghar rezaee

1Master of marine engineer, Islamic republic of Iranian navy force,

[email protected] 2 Assistant Professor, Amirkabir university of technology,

[email protected] 3Assistant Professor, Amirkabir university of technology, [email protected]

4Master of marine engineer, Islamic republic of Iranian navy force,

[email protected]

Abstract

In the present study 2mm thickness plate of St37 steel were welded

together by friction stir welding process successfully. Welding parameters

were 800 rpm tool rotational speed and 15,25,35 and 45 mm/min welding

speed. Tool were made of WC with cylindrical pin geometry.

Microstructural investigation, microhardness and transverse tensile tests

were performed. According to the results, mechanical strength of FSW

joint increase by increasing the welding speed due to reducing heat input

per weld length unit and sever plastic deformation by frictional stirring

caused to reduce in average size of stir zone. Maximum UTS(486 MPa)

were obtained at weld speed of 35mm/min.

Keyword: friction stir weld, mechanical strength, welding speed, carbon

steel




142 | P a g e

A green power supply method for offshore oil and gas

platforms in order to reduce associated environmental

pollutions in Persian Gulf

Shahab Shahriari1, Mohammad saeid Bagherinia2, Pedram

Edalat3

1M.Sc. Student at Energy Systems Engineering, Petroleum University of

Technology; [email protected] 2M.Sc. Student at Offshore Engineering, Petroleum University of Technology;

[email protected] 3Assistant Professor, Petroleum University of Technology; [email protected]

Abstract An offshore oil and gas platform processes its feed stream to some

specifications before exporting to export pipelines or shuttle tankers.

Required processes consume power during lifetime of the platform not

constantly. The amount of this power demand is variant depended on some

measures such as feed properties, the export pipeline requirements, etc.

variant being of this demand results in off-design running condition in

majority of the lifetime for onboard machinery. Such a situation causes

inefficient performance on the platform which will also increase

greenhouse gas emission production rates onboard. Offshore production

platforms have a major share in total greenhouse gas emission production

rates for oil and gas producing countries in recent years, even equal to the

share of all other manufacturing industries or road traffic segment. This

study compares the amount of power demand for common processes on

board a generic offshore platform considering different feed specifications

and introduces an innovative green power supply method for offshore oil

and gas platforms in order to reduce associated greenhouse gas emissions

in Persian Gulf.

Keywords: Offshore platform, greenhouse emissions, green energy,

Persian Gulf.



143 | P a g e

Economic feasibility study of offshore wind turbine

application on oil and gas jacket structures as an

alternative to decommissioning in Persian Gulf

Mohammadsaeid Bagherinia1, Shahab Shahriari2, Pedram

Edalat3

1M.Sc. Student at Offshore Engineering, Petroleum University of Technology;

[email protected] 2 M.Sc. Student at Energy Systems Engineering, Petroleum University of

Technology; [email protected] 3Assistant Professor, Petroleum University of Technology; [email protected]

Abstract Dealing with the decommissioning of offshore oil and gas infrastructures is a

relatively new challenge to most oil and gas producing countries. It is obvious

that experiences in building platforms are much greater than the ones in

dismantling them worldwide. Complexity and costly nature of operations

involving in decommissioning process requires huge investments to be done

during the lifetime of the field for its decommissioning phase of the total

project. Companies prefer to postpone the decommissioning phase by

redevelopments as much economic as possible. Eventually if there is no other

alternative for the platform to continue its economic lifetime, the company

will select the strategy of decommissioning at the point of economic

deficiency for the platform. There are some innovative alternatives to

decommissioning which are depended on availability of tourism, aquaculture

or environmental energy potentials. This paper offers an innovative

alternative strategy selection method and introduces the alternative option of

installing offshore wind turbines (OWT) on an abandoned platforms jacket;

considering costs and benefits study between two strategies; one total

decommissioning and the other one installing an OWT on the jacket of a local

platform in Persian Gulf.

Keywords: Offshore platform; Decommissioning; Innovative strategy

selection method; Offshore wind turbine.



144 | P a g e

Increasing efficiency hopper suction dredging

operations vessels by hypack software and DGPS

positioning system

Soroush amiri1, mohammad amiri2

1Master of Civil Engineering , Islamic Azad University of Bushehr;

[email protected] 2Hopper Suction Dredger ship captain , Chamran University of Ahvaz;

[email protected]

Abstract

In this paper, a novel approach to operations hopper suction dredging

vessels in order to increase efficiency, improve accuracy and avoid energy

waste is presented.In this way Hypack hydrographic and dredging

software DGPS positioning system is used on suction hopper vessels. This

method is applicable to the project location is specified in the application

Hypack And then depending on the type of dredging vessel and the target

range is designed with the command Line Editor And dredging operations

on the lines and using DGPS positioning is done. With this method, the

position of the commander floating dredging operations in software and

control Hypack if you need to record depths deals. This modern dredging

significant impact on efficiency, prevent unnecessary dredging area, save

energy and reduce destruction of equipment are expensive dredging . The

information in this article is based on practical experience and application

of this new way of suction hopper dredging vessels in the ports of Imam

Khomeini and Bandar Rajai PMO has been obtained.

Keywords: Hopper Suction Dredger , Hypack Software , DGPS

positioning system , Increase efficiency , Design line for dredging.



145 | P a g e

An experimental study of gyroscope effect on the

stability of spar-type floating wind turbine

Fatemeh tavakoli1, Rouzbe Shafaghat 2, Rezvan Alamian3

1MSc Student of Naval Architecting, Babol Noshirvani University of

Technology, Sea-Based Energy Research Group;

[email protected] 2Assistant Professor of Mechanical Engineering, Babol Noshirvani University

of Technology, Sea-Based Energy Research Group; [email protected] 3PhD Student of Mechanical Engineering, Babol Noshirvani University of

Technology, Sea-Based Energy Research Group; [email protected]

Abstract

In today's world the use of renewable energy instead of fossil fuels is one

of the key tools in energy storage. The use of offshore wind turbines has

increased due to its growing high capabilities. Since this industry is new,

studying the effective parameters in designing, manufacturing and

stability, dedicate most of the current researches to itself. One of the effects

that must be considered on the stability of offshore wind turbine is the

impact of blade spin (gyros) on the turbine stability. In an experiment

implemented in the wave tank of Hydrodynamic, Acoustic and Marine

Propulsion Laboratory of Babol Noshirvani University of Technology, a

spar-type floating wind turbine was exposed to waves with various periods

in two cases, turbine with rotating blade and turbine without rotating blade.

The observation indicates that gyroscopic force influences on the yaw

motion of the turbine but it does not significant effects on the surge, heave

and pitch motions. According to the effective parameters for production of

gyros, it is important to notice these tips for selection and designing of

wind turbine blades.

Keywords: Renewable energy, floating wind turbine, spar, gyroscope,

yaw motion.



146 | P a g e

Evaluating of capabilities of two-dimensional analysis

for calibration of performance features of wave tank

3alamian,Rezvan 2,Rouzbeh shafaghat1Yaser Abbasi

MSC student,babol noshirvani university of technology,sea based energy 1

research group,[email protected]

assistant professor,babol noshirvani university of technology,sea based energy 2


noshirvani university of technology,sea based energy phd student, babol3


Abstract For evaluating the various scenarios functional coastal and offshore

structures, doing of experimental tests is important Wave tank as an important

tools, provides the possibility of experimental investigating of features of

waves and interaction of waves and structures. The expense of making

models and creating different arrangments is an important challenge in

experimental methods. For calibration of tank or decreasing number of tests

, using the theoretical tools, are desirable solution for decreasing expenses.

This study pays to comparison of results obtained from two dimensional and

three dimensional solution by aid of Ansys – fluent 15 software with

experimental results obtained from tank of Babol Noshirvani university of

technology. For generating of waves, a flap wave maker is used. Numerical

solution was based on finite volume method, fluid is considered viscouse and

incompressible. Turbulence modeling with the "k-ε" and the free surface

simulation perform by the two-phase volume of fraction (VOF) model. The

comparison shows that two dimensional solution predicts the height and

length of wave averagely 3.49 and 4.49 percent respectively lower than the

experimental results. due to the nature of waves, the results of two

dimensional and three dimensional simulations have small differences with

each other. Another importantc result is the effect of length of course of wave

maker. As expected, whatever displacement course be more, the wave height

increases. Ofcourse the wave height decreases by going far from the wave

maker that is indicative of attenuating of wave.

Keywords: wave tank , flap wave maker , finite volume method ,

software of fluent , volume of fraction method



147 | P a g e

Experimental-numerical study of tree dimensions wave

tank for numerical methods validation and parametric

analysis

Saeed esbati diz 1, Rouzbeh shafaghat2, Rezvan alamian3 1MSc student, Babol noshirvani university of technology, sea based energy

research group; [email protected] 2 Assistant professor, Babol noshirvani university of technology, sea based

energy research group; [email protected] 3PhD student, Babol noshirvani university of technology, sea based energy

research group; [email protected]

Abstract Wave tank is among the most important tools of study in the field of marine

and coastal engineering, includes of long channel, one wave maker and one

waves absorber. Waves propagated in the length of channel, are used for

physical modeling of different phenomena like surfacial waves and their

interactions with offshore systems. Reaction between floater and waves is

investigated by two numerical and experimental methods. However the

experimental methods have higher accuracy, but by advance of computers,

using the numerical methods have been common. The advantage of these

methods, is lower expense and ability of investigating of wider range of

parameters. In this research, the software of flouent and finite volume method

(FVM) are used for three dimensional simulation of wave tank; fluid

incompressible and viscose are considered, also k-e standard model was

applied for the turbulence modelling. In computational amplitude boundaries

non-slip walls and symmetry boundary conditions are used and the free

surface is modelling by two-phase volume of fluid (VOF) methods. The

numerical results have been validated by experimental results obtained from

tank of laboratory of Babol Noshirvani university of technology. Waves have

been generated by a flap wave maker in a frequancy period and several

different length of courses. The comparison of numerical results with

experimental results , has shown the average difference of 5.61% , is

indicative of high accuracy and being useful of this method in the analysis of

such matters.

Keywords: wave tank, flap wave maker, fluent, finite volume methods,

volume of fluid (VOF)





148 | P a g e

Applying cognitive systems for adaptability sonar with

environmental parameters

Mohammad Vahedian darghahi1, Mohammad Hedayati

Khodayari2

1 MSc Communication Systems ,Department of Electrical Engineering, Sadjad

University of technology; [email protected] 2Ph.D. student, Control, Department of Electrical Engineering, Ferdowsi

University of Mashhad;[email protected]

Abstract

Performance sonar systems is highly dependent on environmental factors.

Current sonar Despite the inclusion of this situation, many factors, changes

in these parameters during working time sonar, the system is not and has

not been updated on the basis of objective information, describing the

target profile. Thus, to achieve an adaptive behavior to environmental

conditions, in the first phase should be possible to change the parameters

of the sonar system. This brings us to the software defined systems will

lead to the possibility of changing part of an integrated system hardware

parameters, configure the software caused by the user. In the second phase

to increase the environmental compatibility, we entered the field of

knowledge-based systems that can be entered into the system's level of

intelligence. In this paper, cognitive sonar as a system that proportional to

the receiver ability to optimize and sending signals of environmental

change has been introduced And inspired by the work done in the field of

radio and radar systems, new issues with an approach to cognitive system

exist in the world in the field of cognitive sonar will open.

Keywords: Sonar, adaptability, cognitive system, cognitive sonar .



149 | P a g e

Underwater monitoring and surveillance using

proposed sonar in shallow water

Javad Taghizadeh1

1PhD of Communication Systems Engineering, Ferdowsi University of

Mashhad; [email protected]

Abstract

Acoustic imaging of underwater moving target for underwater monitoring

and surveillance is possible by employing the method used in synthetic

aperture radars. In recent years, synthetic aperture sonar has been the

subject of several researches. Wherein imaging of underwater moving

target is required, inverse synthetic aperture sonar (ISAS) idea can be used

but specifications and limitations of underwater channel should be

considered. In this paper we propose multi-static inverse synthetic aperture

sonar (MISAS) with specific geometry and condition which can be used

for underwater monitoring and surveillance in shallow water.

Keywords: Underwater surveillance, Inverse Synthetic Aperture Sonar

(ISAS), Multi-static Inverse Synthetic Aperture Sonar (MISAS)



150 | P a g e

LES investigation of cavitating characteristics around

a 3D sphere

Mohammad-Reza Pendar1, Ehsan Roohi2

1 PhD Student, Department of Mechanical Eng., Ferdowsi University of

Mashhad; [email protected] 2 Associate Professor, Department of Mechanical Eng., Ferdowsi University of

Mashhad; [email protected]

Abstract

In this paper cavitation over a sphere at Reynolds number of 1.5×106 and

broad range of cavitation numbers (0.36 < σ < 1) is reported. A large-eddy

simulation of cavitating flow is compared to the non-cavitating flow at the

same Reynolds number. Cavitation is observed to significantly influence

the evolution of pressure, vorticity, velocity, streamlines, boundary layer

and loads on the sphere surface. The wake characteristics are compared to

the single-phase results at the same Reynolds number and it is observed

that cavitation suppresses turbulence in the near wake region and delay the

three-dimensional breakdown of the vortices. The governing equations and

the turbulence model in originally complete forms are employed in the

OpenFOAM; intephaseChangeFoam solver. The stable different range of

cavity regimes and the periodic shedding of the cavitation bubble are

predicted. The volume fractions contour of the cavity cloud which

obtained from numerical simulation are compared to experimental results

and good agreement is observed.

Keywords: Unsteady cavitation, Sphere, Numerical simulation, Vortex

structure, wakes.



151 | P a g e

The feasibility of using tidal power plants in Iran

Alireza Kani3Akbar Shahrbaf, 2Ali Sheykhbahaei, 1

[email protected]. of Marine Structures, INIO, 1


[email protected] prof. of Renewable Energy, Azad University, 3

Abstract

Tidal energy, tide, is a form of clean energy in our country despite having

hundreds of miles of coastal border, still not benefited enough. Perhaps the

main reason for not entering this type of energy to Cart meet the needs of

the country is the lack of a device that could extract energy from Iran's seas

tides. Although studies in Iran shows that the height of waves and tides off

the coast of Iran, is not comparable with other countries (For example, on

the shores of England, sometimes even more than 10 meters high waves

arrive. Off the coast of Canada, the height of the tide sometimes reaches

up to 15 meters, but such a range not seen in Iran. So that wavelengths in

Iran, even in Chabahar are up to 2.5 meters), But experts believe that over

the next decade, the cost-effective energy extraction systems will enter the

world markets. Based on studies in the country, some areas were identified

for extracting energy from the sea, including Musa estuary near the Imam

Harbor, Khuzestan and Khoran area between the island and the mainland

coast. Noting that those are the most appropriate sites to run pilot projects

to extract energy from the sea.

Keywords: Renewable energy, Tidal energy, Climate, Energy efficiency






152 | P a g e

Introducing and comparing of the ocean energy

converter systems

MirzahooseiniS.Alireza 3Akbar Shahrbaf, 2Ali Sheykhbahaei, 1



Assistant prof. of Environment, Azad University, [email protected] 3

Abstract

The oceans are vast reservoirs of moving energy that travels in waves, tides

and surface or underwater currents, caused by temperature differences in

different places. Iran also has a very long coastline and numerous islands

in the north and south of the country. It is among the countries that could

take a lot of benefits using this energy. Although at present, it is impossible

to use vast moving energy of sea waves, in large scale, but small samples

is used to generate electricity. Now, although energy production does not

make much economic output from the sea, but it can be used for lighting

remote villages and islands that are not connected to the national grid. In

this paper, we introduce some different systems of ocean energy converters

and compare them with each other.

Keywords: Renewable ocean energy, Environment, Energy, Tides,

Waves, Marine currents





153 | P a g e

Mechanisms and converters to extract power from

wave dynamics

1Ali Sheykhbahaei, 2Akbar Shahrbaf, 3Andisheh Shiehbigi



Assistant prof. of Renewable Energy, Azad University, 3

[email protected]

Abstract

The ocean wave energy is produced by the action of wind on the ocean

surface. The total wave energy distribution in the ground is estimated about

2.5×106 MW, which is about the overall distributed of the tide. Wave

energy is a renewable source and usually has more production capability

than wind energy. Energy derived from waves, by interaction is quickly

filled again by the interaction with the oceans. Irregular wave energy

fluctuates with low frequency that must be converted to a frequency of 60

Hz, before added to the network. According to estimates, the total energy

of waves in the world is 2 terawatts (2 million MW). Roughly, 20% of this

energy is recoverable. By the mid-90s, more than 12 distinct systems for

the extraction of this energy is proposed. Now, an increasing number of

new systems have been introduced that only a few of them are

economically and technically feasible. The best area for construction of

the power plant are areas that have high height.

Keywords: Waves, Wind, Renewable energy, Converters.





154 | P a g e

Novel fouling release coating systems based on nano

technology for the marine industry

Ebrahim Raeissi

1International Blue Ocean Co; [email protected]

Abstract

Non-toxic foul release based on silicone elastomers due to their low

surface energy and low elastic modulus prevent fouling settlement on ship

hulls. In this work, we designed fouling release coating based on nano

technology systems. The influence parameters on the mechanical and

surface properties of silicone elastomers investigated. SEM results reveal

that the nano particles dispersed uniformly in silicone matrix. The result

proved that incorporation of silica nano particles in the formulations

increased the elastic modulus, tensile strength, elongation at break and

abrasion resistance of coatings. Also, AFM results indicate that the average

surface roughness for both coating system were lower than 100 nm.

Moreover, the filed test proven the good fouling release performance in

sea water. We managed to create a fouling release coating with better

mechanical properties and almost the same fouling release behavior.

Keywords: Silicone elastomer, nano technology, fouling release

coatings, mechanical properties, surface properties, filed test, sea water

Supply and demand of marine expert manpower Marine industrial workers and seafarers problems Marine social and culture resources Seafaring and marine engineering education

Human resources10 Supply and demand of marine expert manpower Marine industrial workers and seafarers problems Marine social and culture resources Seafaring and marine engineering education

Human resources10



155 | P a g e

Evaluate the effectiveness of the system to retain the

educated human resources policies, objectives and

prospects of ports and maritime organization

Yaser Kazemi Askerani 1, Fatemeh sadat Ghodrat 2 1Master of Human Resources management , Bonab Islamic Azad University ؛

[email protected] 2Master of Business Administration ,Amin University of Fouladshahr ؛

[email protected]

Abstract

The overall objective of this study is to Evaluate the effectiveness of the

system to retain the educated human resources policies, objectives and

prospects of Ports and Maritime Organization. In the present study, the

theories of Max Weber and Taylor Dslr and Gray model and the welfare

model to measure system of recruitment and human resources to maintain the

Staffing pattern in the quality of work life for the breeding and training of

manpower Rychardvaltvn and Albert Bandura's social learning theory has

been used. Research hypothesis involves one main hypotheses and sub-

hypotheses is 8. To test the hypothesis of a single sample test was used. The

research sample consisted of Ports and Maritime Organization's central office

as well as specialized training centers and ports on Lake Yanvrdy as the 103

uestionnaires distributed among employees in 1391. For data analysis and

hypothesis testing of software SPSS for normality and no test Klmv Grvf -

Smirnov and descriptive statistics table frequency and percentage of

responses and column charts, average ratings, standard deviation is used . The

results of the hypotheses tested the hypothesis that attraction, recruitment and

retention of human capital theory, human capacity development, fair pay and

is not effective enough Other hypotheses are effective and also show a

significant relationship between the main research hypotheses.

Keywords: Healthy and safe working environment, development of human

capacity, payment of fair and adequate.



156 | P a g e

The investigating relationship of social capital with

organizational commitment has implement in a ship

building industry (case study)

Vahdat Pirouzram1, Seyyed Abas Kazemi2, Reyhaneh

Bararnia3 1Master of Structural, Malek Ashtar Industerial University;

[email protected] 2Associate Professor, Islamic Azad University Science & Research compus;

[email protected] 3Master of Executive Management, Azad University Science & Research

compus; [email protected]

Abstract

The present study’s subject, the Investigating Relationship of social capital

with organizational commitment has implement in Ship Building Industry.

Main research question was that is there any Relationship between social

capital and organizational commitment? Nahapiet and Ghoshal model was

used to identify social capital and Allen and Meyyer model used for

organizational commitment.Questionnaire consists of 18 question for social

capital and 24 for organizational commitment. Content-related validity was

used for Questionnaire validity and to assess the reliability, Cronbach’s alpha

was obtained 0.935.The study in terms of target is from type of applied

research component descriptive and correlation. To descriptive analyze SPSS

software and for illative analyze PLS software were used.Among statistical

sample 86 questionnaires were collected. Kolmogorov-Smirnov test was used

to determine the normality of obtained data and the test results confirmed data

normality. Research hypotheses were done by using confirmatory factor

analysis and structural equation model.There are 10 hypotheses in this study

and the results indicate that there is a significant positive relationship between

social capital and organizational commitment as the main hypotheses.

Keywords: Social capital, Organizational commitment, Ship Building

Industry.



157 | P a g e

Pathology organizational culture of social capital(case

study:Khorramshahr port and maritime

administration)

Seid Jalil Mousavi, Iran Baraei, Mohammad Amir Siavash

Haghighi

Abstract

The Khorramshahr port as one of the oldest ports in the country has

fostered a culture within which the interaction between urban relations and

the relations with characteristics associated with the maritime domain

requires special attention and is explored. Khorramshahr Port and

Maritime Administration as a bridge between the community and the

Workforce Sea, has long been a booster of social capital in the context of

a dynamic culture. Organizational culture and distinguishing features

related to the concept of social capital. To promote organizational culture

in order to enhance the capabilities of the organization, more attention

should be paid to components of social capital. This article documents and

data collection methods And using the questionnaire was organized

attempts with special attention to the concept of social capital , Denison

model , based on a four-step plan , to identify organizational culture in

Khorramshahr port 's and then with pathological conditions , in order to

improve the cultural level of this administration , practical solutions to

offer.

Keywords: Organizational Culture, Social capital, Denison model,

pathology.



158 | P a g e

Training to prevent maritime accidents

Fatemeh Shouri

Ms Student, Khorramshahr University of Marince Science and Technology

[email protected]

Abstract

The shipping industry plays an important role in today’s global economy

as it is a facilitation mechanism for more than 90% of the world trade.

However only in recent history thousands of incidents and accidents

involving ships have resulted in loss of life and property. Investigations of

these types of disasters have shown that human element is the main

contributing factor to these disasters. It is estimated that over 80% of all

maritime mishaps are presently attributable to on board human actions.

However, from early in their career, mariners have to attend formal

learning environment to gain skills and knowledge that they need to

practice safely on board ships. Present paper aims to review the impact of

human element on maritime accidents and presents some useful

recommendations toward training improvement and accident prevention.

Keywords: shipping, seafarer , training, accident.




159 | P a g e

Development of the safety culture for the education of

human sources in maritime technology and sciences

Ahmadreza Dourandish1, Afshar Bahmani2, Farshad Haeri3,

Sasan Tavakoli4

1Curriclum and Textbook Development Office, IRI Ministry of Education;

[email protected] 2 Curriclum and Textbook Development Office, IRI Ministry of Education;

[email protected] 3IRISL Maritime Training Institute, [email protected]

4Dept. of Maritime Engineering, Amirkabir University of Technology,

[email protected]

Abstract

Purposive and proper teaching to human sources in the maritime industry can

be considered as one of the most vital factors in growth of the shipping

industry of the country. To this end, a novel and effective approach has been

planned in the Curriculum and Textbook Development Office of Ministry of

Education by modifying the previous education plane of marine navigation,

mechanic of marine engines and electronic and communications on ship board

branches. In this regard, an educational package including textbook, teacher

guide book, student handbook and CD has been provided for each course in

order to consider both technical and non-technical skills with emphasize on

teaching-learning concept. Based on the made decisions by the assigned

member of commission and the standards of Port and Maritime Organization,

the first step to reach this target is found to be the development a safety culture

for the newcomer students. In this context, the “Safety in Sea” book has been

prepared and published to be studied by the students in the academic year of

2016-17 for the first time which embraces five modules of 1) Safety on ship

bord, 2) First aids, 3) Fire Fighting, 4) Save of life, and 5) Protection of the

environment.

Keywords: education, culture development, safety, maritime

technology.







160 | P a g e

Process of the technical skills development in the

curriculum of maritime navigation branch in high

school

Ahmadreza Dourandish1, Afshar Bahmani2, Sasan Tavakoli3

1Curriclum and Textbook Development Office, IRI Ministry of Education;

[email protected] 2 Curriclum and Textbook Development Office, IRI Ministry of Education;

[email protected] 3Dept. of Maritime Engineering, Amirkabir University of Technology,

[email protected]

Abstract

Process of planing and teaching the technical skills of may be included two

different fields of job world and educational world. The process of the

planing for the mentioned educational world may be divided into design

and codification of the standards for the technical skills, those which may

be used in the future job of the students, and defining a special method for

evaluating the thought skills. The designed steps may contain sequence of

ten stages those which include simultaneous systematical and analytical

approaches. In the current paper, the process containing the design of the

educational plane for technical skill of the maritime navigation is

presented. This plan has been finalized using the previous documents of

the Country, Ministry of Education, experiences of abroad countries. Since

the process of planing is so broad and cannot be explained in details in

only one paper, current paper only presents the process of developing of

this plan for technical skills of maritime navigation branch.

Keywords: the process of planning, job world, standards for skills,

maritime navigation.




Documents

Abstract Book of 18th Marine Industries Conference