ISROMAC 17 ISIMET 2isromac-isimet.univ-lille1.fr/templates/Program... · ISROMAC 17 & ISIMet 2 – Program 3 plenary sessions. I am confident that following ISROMAC & ISIMet events

17TH INTERNATIONAL SYMPOSIUM ON TRANSPORT PHENOMENA

AND DYNAMICS OF ROTATING MACHINERY

2ND INTERNATIONAL SYMPOSIUM ON IMAGE BASED METROLOGY

ISROMAC 17 & ISIMET 2

PROGRAM

A FEW WORDS…

Aloha!

It’s a great pleasure to welcome you a second time in Hawaii for a joint ISROMAC / ISIMet

conference.

After the great success of ISROMAC 16, my primary goal for the present event is to highlight the

interest within the scientific community of rotating machinery. For that purpose, the 35 forums

initiated in 2016 have been renewed for this 17th edition. ISROMAC should become a first favorite

for researchers working all around the world on these various topics, as they should be assured to

find valuable up-to-date scientific discussions at ISROMAC. The conference has thus been open to

both full paper submissions and presentation only contributions. The intent is to promote the

presentation of recent findings and ensure quality of the content. Talks on-very recent discoveries

are thus very welcome, and complement the highly rated papers reporting complete work, which

will be published in quality journals after the conference. The review process conducted in the last

months has improved the quality of all submitted full papers, so that a large number has now a

chance to be included in these special issues.

ISIMet 1 has been very inspiring with a number of great invited lectures. That effort has enabled us

to extend the scope of the conference beyond fluid mechanics and to attract more participants this

year. As a result, we have exciting invited and keynote speakers, from both solid and fluid

mechanics, who will provide their insight on the state of the art work in the area of image based

methods. Although the technical sessions are still mainly fluid oriented, and the number of

participants from solid mechanics is modest, the grouping of specialists from solid and fluid

communities is not common elsewhere, which makes this event very unique and special. I hope

that it will facilitate outstanding scientific discussions and new ideas on both sides, including the

experimentalists working in the area of rotating machinery!

I would like to thank the forum organizers for their efforts over the last months, especially to

conduct the review process for all submitted full papers. Most of them have accepted a second

commitment, while some new colleagues have also accepted to help, even if they were not able to

attend the conference. The success of the event is reliant on your efforts! Thanks also to the

AMValor team in France who managed the registrations, Jama Green from the AOE department at

Virginia Tech, and Julia Chang from the Hyatt for their help and support. I would like also to

express my gratitude to all the reviewers, who have dedicated time to improve the quality of the

papers. We currently have about 800 researchers registered on the website, which gives an idea of

the scientific community involved in the process and interested in ISROMAC and ISIMet.

The resulting quality of the papers is generally higher than in the last event, so more papers have

been selected for publication in the journals. The process has already been initiated, as the general

idea is to enable fast publication after the conference. All other papers will be published in an

online, open-access archive, with permanent access for the scientific community. Lastly, more than

380 abstracts have been submitted, and there will be about 250 talks presented in the technical and

ISROMAC 17 & ISIMet 2 – Program

3

plenary sessions. I am confident that following ISROMAC & ISIMet events will continue to grow in

attendance and establish the standard for quality.

This year once again, award for the best presentation will be offered to the most outstanding

speaker in the technical sessions. The award ceremony will take place in the closing session on

Thursday 21, based on the feedback of the chairmen of all sessions. In the meantime, do not skip

the welcome reception on Saturday 16 evening, and the gala dinner on Wednesday 20 evening!

This conference will be an event to enjoy both inside and outside the venue, the Hyatt Regency; I

trust you will all make time for both attending the excellent sessions and exploring beautiful Maui.

To help you with that difficult task, the technical sessions will start early in the morning, lunch will

be provided in the conference area, so the sessions will end at 4pm in the afternoon. I wish you a

very enjoyable stay in Maui!

Kind regards,

Olivier Coutier-Delgosha

Conference chair


4

SATURDAY 4:00pm – 6:00pm On-site registration

6:00pm – 9:00pm Welcome Reception

SU

ND

AY

8:00am – 8:30am Opening session ISROMAC / ISIMet

8:30am – 9:30am Invited lecture ISROMAC / ISIMet – Plenary session (Chris Willert)

9:30am – 10:00am Coffee break

10:00am – 12:00pm F1-1 F27-1 F2-1 F20-1 I1-1

12:00pm – 1:00pm Lunch

1:00pm – 1:50pm ISIMet keynote talk – Plenary session (Todd Lowe)

2:00pm – 4:00pm F1-2 F27-2 F2-2 F20-2 F15-1 I1-2

MO

ND

AY

8:00am – 10:00am F1-3 F6/7/8 F2-3 F32 F15-2 F16/18


10:30am – 11:10am Keynote talks – Plenary session (Mohamed Farhat / Garth Hobson)

11:10am – 12:00pm Invited lecture ISIMet – Plenary session (Ellen Longmire)


1:00pm – 1:50pm Invited lecture ISROMAC – Plenary session (Charles Meneveau)

2:00pm – 4:00pm F26/30 F14 PIV Workshop

TU

ES

DA

Y 8:00am – 10:00am F5/9-1 F11 F36-1 F25/28-1 F17/19-1 I3-1


10:30am – 11:10am Keynote talks – Plenary session (Ryan Berke / Julie Young)

11:10am – 12:00pm Invited lecture ISROMAC – Plenary session (Danesh Tafti)


1:00pm – 1:50pm Invited lecture ISIMet – Plenary session (Marco Stampanoni)

2:00pm – 4:00pm F5/9-2 F3-1 F36-2 F25/28-2 F17/19-2 I3-2

WE

DN

ES

DA

Y

8:00am – 10:00am F5/9-3 F3-2 F13-1 F24 I7-1


10:30am – 11:10am Keynote talks – Plenary sessions (Christophe Pradere / Alain Demeulenaere)

11:10am – 12:00pm Invited lecture ISIMet – Plenary session (Dana Dabiri)


1:00pm – 1:50pm Invited lecture ISROMAC – Plenary session (Emil Göttlich)

2:00pm – 4:00pm F21 F3-3 F29-1 F13-2 F10 I7-2

7:00pm – 10:00pm Gala Dinner

TH

UR

SD

AY

8:30am – 9:10am Keynote talks – Plenary sessions (Jean-Noël Perié / Zhigang Zuo)

9:10am – 10:00am Invited lecture ISIMet – Plenary session (Phillip Reu)


10:30am – 11:30am Invited lecture ISROMAC – Plenary session (Chris Brennen)

11:30am – 12:00pm Closing session & Award of the Best Presentation

Enjoy the beach!


5

INVITED LECTURES & KEYNOTES


6

Invited lecture

Sunday, 8:30a – 9:30am

Monarchy 4

The role of optical diagnostics in applied gas turbine

combustor R&D - the tricky balance between customers'

expectations, cost and the limits of physics

Chairman: Ellen Longmire

(University of Minnesota)

Abstract: The past decades have been characterized by

considerable advancements of laser/optics technology, imaging

capabilities along with rapidly growing computing resources that

in combination constituted the enabling technologies leading to

the emergence of a wide variety of nowadays readily available

image-based measurement techniques. Among these, particle

image velocimetry (PIV) has made substantial impact on

experimental fluid mechanics and associated fluid engineering

fields, in part already through its capability of making complex

fluid flows "visible" and quantifiable. Although fully capable of

providing temporally and volume resolved velocity data, the use

of PIV continues to play a secondary role in applied industrial

research and is often side-lined with respect to conventional

"established" point-wise measurement techniques. In many PIV

applications, the acquired PIV data is mainly used for the

“validation” of numerical methods, leaving the full potential

provided by the spatio-temporal resolved PIV data untapped.

The presentation will introduce several examples of utilization of

advanced image-based measurement techniques such as PIV in

industrial R&D settings, mainly from the turbomachinery sector

involving investigations of transonic compressor aerodynamics

and measurements within combustion chambers operating at

flight-relevant conditions. A prerequisite for making any optical

measurements in these rough operating environments possible

has been the direct involvement of the measurement specialists

at the early stages of the rig design, for instance, to integrate

optical accessibility to the areas of interest. Yet, oftentimes

issues such as beam steering, light absorption, contamination or

strong vibrations degrade the signal to unacceptable levels,

requiring creative solution strategies. To improve the overall

understanding of the underlying aero- and thermodynamics of

the investigated component, the combination of measurement

techniques has proven to be very valuable. Beyond this, more

advanced, 3-D and high-speed imaging approaches still hold

significant potential, as will be highlighted with a few examples

from recent experiments, but must be balanced against an

increased instrumentation and processing effort.

Christian Willert heads the

Department of Engine Measurement

Technique at the Institute of

Propulsion Technology of the German

Aerospace Center (DLR). He received

his BS degree in Applied Science from

the University of California at San

Diego (UCSD). Subsequent graduate

work in experimental fluid mechanics

at UCSD led to the development of

several non-intrusive measurement

techniques for application in water

(particle tracing, 3-D particle tracking,

digital particle image velocimetry)

After receiving his Ph.D. he assumed a

post-doctoral position at the Graduate Aeronautical Laboratories at the California Institute of Technology

(GALCIT). In 1994, he joined DLR Goettingen’s measurement sciences group as part of an exchange

program between Caltech and DLR where he was strongly involved in the development of PIV for

application in large scale industrial wind tunnels. With the move to the DLR Institute of Propulsion

Technology in 1997 his focus shifted toward the development and application of optical velocimetry

techniques in turbomachinery, with emphasis on PIV, planar Doppler Velocimetry (PDV), endoscopic

imaging and flow visualization techniques. At the institute his department is devoted to continually

developing and applying a wide variety of laser-optical velocimetry and spectroscopic techniques to

compressors, turbines and high-pressure combustion facilities, both for in-house clients and industrial

partners.

Chris Willert DLR - Germany


7

Keynote speech

Sunday, 1:00pm – 1:50pm

Monarchy 4

Fluorescent Particle Flow Imaging

Chairman: Olivier Coutier-Delgosha

(Virginia Tech)

Abstract: Recent progress in interpreting and using fluorescence

signals emitted from flow seeding particles has led to innovative

applications for flow imaging. While a number of approaches

exist, our group at Virginia Tech has shown advances using

particles doped with a safe dye, Kiton Red 620, specially devised

for aerodynamics applications wherein users may inhale low

concentrations of particles during normal working practices. In a

collaboration with researchers at NASA Langley Research

Center, polystyrene spheres were synthesized to contain optimal

concentrations of this dye, while holding a stringent tolerance

around a nominal diameter of 0.87 . The resulting particles

have been shown to work in aerodynamics studies as tracers for

both fluorescent laser Doppler velocimetry and fluorescent

particle image velocimetry. By using the fluorescence signals,

dramatic improvements in laser scattering from surfaces and

interfaces are realized, such as the comparison shown in Figure 1

between fluorescent and conventional Mie-scattering PIV. This

capability enables near-surface flow studies in complex devices,

even without other advanced treatments or specialized facilities.

In the presentation, a brief review of the literature of fluorescent

particle flow imaging will be provided. A basic description of

the metrology implications will be described at a fundamental

level. The specific particle technology developed by Virginia

Tech and NASA will be placed in context with other

technologies, and its basic performance for imaging applications

presented. Aerodynamics applications using the Kiton Red 620-

doped particles will be shown to offer dramatic improvements in

near-surface particle imaging quality, without the need for

special treatment of flow models. Some other advanced uses for

the particles, such as flow temperature measurements, will be

discussed. Finally, the outlook for advancing the state-of-the-art

in fluorescent particle flow imaging will be proposed

Todd Lowe received his B.S. (2001) and

Ph.D. (2006) degrees in Aerospace

engineering from Virginia Tech. He is

currently Associate Professor at Virginia

Tech, in the Kevin T. Crofton

Department of Aerospace and Ocean

Engineering. He leads a research team

focused on the aerodynamics and aeroacoustics of propulsion inlets and exhausts with advanced capabilities in

laser-based optical diagnostics. His fundamental contributions have provided insights for understanding

turbulence transport and noise in turbulent shear flows, with much recent work focused on the impact of large-

scale turbulence on supersonic jet noise. His instrumentation research has resulted in several notable impacts,

including fluorescent particle velocimetry for very near wall flow measurement, 250 kHz planar Doppler

velocimetry and new interpretations of the particle lag effects on supersonic turbulent boundary layer

statistics. His recent work motivated by the propulsion/airframe integration problem has led to advances in

applying laser diagnostics in turbofan engine ducts. He is co-inventor of two US utility patents, with two

additional patents pending, and has publications in the areas of advanced diagnostics for fluid dynamics,

turbulent shear flow physics, propulsion and power, and signal processing. He is the Associate Director of the

Advanced Propulsion and Power Laboratory at Virginia Tech and currently leads a team of fourteen graduate

students, a research scientist and a laboratory engineer. Prior to returning to Virginia Tech as a faculty

member in late 2010, he was V.P. for Research and Development at AUR, Inc., a small business focused on

laser diagnostics research and development.

Todd Lowe Virginia Tech, USA


8

Keynote speech

Monday, 10:30am – 11:10am

On the collapse of non-spherical bubbles

Monarchy 4


(Virginia Tech)

Abstract: Cavitation bubbles were traditionally associated with the

damage they may cause in a variety of hydraulic devices (e.g. hydro

turbines and pumps, marine propellers, siphons, …). Nowadays, owing

to their unique ability to focus energy, cavitation bubbles are

introduced in a growing number of applications, such as drug delivery,

sonochemistry, lithotripsy, histotripsy, food processing and many

more. Although this long lasting topic has received a great deal of

attention, the collapse of a cavitation bubble is still not yet fully

understood.

We investigated the collapse phenomena related to a single cavitation

bubble with a focus on micro-jets, shock waves and luminescence. Our

main objective is to quantify and predict how these phenomena are

affected by the bubble’s deformation, using a combination of

experiments, statistical analysis, numerical simulations and theoretical

models. In this talk, I will describe the experimental setup, which

produces a highly spherical bubbles with the help of a focused laser

pulse and an innovative optical arrangement. The bubbles are carefully

deformed in variable gravity aboard European Space Agency parabolic

flights or by introducing nearby solid and free surfaces. I will then

introduce our unified framework to describe the bubble collapse

phenomena, through an anisotropy parameter , which represents a

dimensionless quantity of the liquid momentum at the bubble collapse

(Kelvin impulse). We measure key properties associated with the

micro-jet dynamics (e.g. jet speed, impact timing, centroid

displacement), which reduce to straightforward functions of ,

regardless of the micro-jet driver. This result is fairly supported by

numerical simulations based on boundary integral method. For bubbles

collapsing near a free surface, we identify different mechanisms of

shock waves generation with the help of a needle hydrophone. The

energy carried by each of these shocks is found to vary with . We find

that for bubbles that produce jets, the shock wave peak pressure may be

approximated by the jet-induced water hammer pressure as a function

of . Finally, I will report about an innovative luminescence detection

system, destined to overcome the challenge of measuring the

luminescence spectra (300-900 nm) of the weak, small, rapid and

migrating flash light from individual bubble collapses. We have found

an approximately exponential quenching of the luminescence energy

the anisotropy parameter is increased. Surprisingly, the blackbody

temperature of luminescence does not vary with .and lies between

8000 to 10000 °K. Besides, time resolved measurements of the

luminescence flash reveals multiple peaks within a time frame of

approximately 200 ns, implying non-uniform gas compression during

the collapse. Overall, these results help in better understanding and

predicting key characteristics of a bubble collapse in a pressure

gradient field and can serve for numerical benchmarking.

More information is available in the following related publications:

- Supponen O., Obreschkow D., Tinguely M., Kobel P., Dorsaz N.,

Farhat M., “Scaling laws for jets of single cavitation bubbles”. J. of

Fluid Mechanics, Vol. 802, 2016

- Supponen O., Obreschkow D., Kobel P., Tinguely M., Dorsaz N.,

Farhat M., “Shock waves from nonspherical cavitation bubbles”.

Physical Review Fluids, 2017

- Supponen O., Obreschkow D., Kobel P., and Farhat M.,

“Luminescence from cavitation bubbles deformed in uniform

pressure gradients”. Phys. Review E, 2017.

Mohamed Farhat is head of cavitation

Research Group at EPFL Laboratory for

Hydraulic Machines. His research is

mainly focused on Cavitation &

Multiphase Flows, Fluid-Structure

Interaction, Free Surface Flows,

Hydrodynamics of Turbines and Pumps,

Bioreactors and Hemodynamics.

Mohamed Farhat EPFL, Switzerland


9

Keynote speech

Monday, 10:30am – 11:10am

Monarchy 5

Cross-Flow fan development for propulsion of a vertical

take-off and landing vehicle

Chairman: Knox Millsaps

(Naval Postgraduate school)

Abstract: A brief history of cross-flow fan (CFF)

propulsion will be discussed followed by the development of

improved thrust and weight reduction of advanced fans.

Both numerical and experimental investigations were

conducted optimize the thrust-to-weight ratio of these

devices resulting in the first vertical take-off and landing

(VTOL) vehicle entirely powered by four CCFs. This was

achieved by adjusting the stagger angle of the blades as well

as the solidity of the blades on the impeller. Three-

dimensional exhaust flow field investigations were carried

out to improve not only the thrust of the device but to better

understand its acoustic signature, results of which will also

be presented. In attempt to produce more advanced impeller

geometries, additive manufacturing has been used to

produce an impeller of adequate strength for the high

rotational speeds needed for VTOL flight. Finally, an

embedded CFF-in-wing concept is proposed for a vehicle

that would take off vertically and transition to horizontal

flight.

Dr. Garth V. Hobson is a Professor and Chairman of the Department of Mechanical and Aerospace

Engineering at the Naval Postgraduate School, specializing in experimental and computational

turbomachinery problems. He has more than 50 journal and refereed conference publications in this field. His

current research interests are in transonic fan and compressor aerodynamics, stall precursors, inlet distortion,

cross-flow fan propulsion, miniature gas turbines for UAV propulsion, transitional flows in compressor

cascades, erosion of compressor blades due to sand ingestion, high cycle fatigue and signature suppression.

More recently he has become active in the field of optimizing vertical axis wind turbine arrays, as well as the

renewable production of hydrogen as fuel of the future. He has been the director of the Turbopropulsion

Laboratory since 2005. He joined the Naval Postgraduate School in 1990 as an associate professor in the

Department of Aeronautical and Astronautical Engineering. This after received his PhD in Aerospace

Engineering at the Pennsylvania State University in 1989. Prior to that he worked at the National Institute for

Aeronautics and Systems Technology, South Africa. He received his MSc in Mechanical Engineering (1983)

and BSc in Aeronautical Engineering (1979) both from the University of the Witwatersrand, Johannesburg.

Garth Hobson Naval Post-graduate school, USA


10

Invited lecture

Monday, 11:10am – 12:00pm

Monarchy 4

Particle Image Velocimetry Applied to Turbulent and

Multiphase Flows

Chairman: David Nobes

University of Alberta

Abstract: This talk will focus on particle image velocimetry

(PIV) within planar and volumetric domains of complex flows.

Results from several experiments will be presented and discussed

in which PIV is used on its own or in combination with high

speed visualization and discrete particle tracking. These will

include investigation of eddy structure and organization in single-

phase and particle-laden turbulent flows, drop collisions and

coalescence in liquid/liquid mixtures, and predator/prey

interactions in aquatic flows.

Ellen Longmire received an A.B. in physics (1982) from Princeton University and M.S. (1985) and Ph.D.

(1991) degrees in mechanical engineering from Stanford University. Prior to receiving her Ph.D., she

worked as an engineer at Hauni-Werke Koerber & Co in Germany and at Honeywell and SAIC in the U.S.

Since 1990, she has taught and directed research in the Department of Aerospace Engineering and

Mechanics at the University of Minnesota where she holds the rank of Professor. She uses experimentation

and analysis to answer fundamental questions in fluid dynamics that affect industrial, environmental, and

biological applications. Recently, her work has focused on single- and multi-phase turbulent flows and

liquid/liquid mixtures with surface tension. She is a Fellow of the American Physical Society and received

the UM Distinguished Women Scholars Award (2007), the McKnight Land-Grant Professorship (1994),

and the NSF National Young Investigator Award (1994). She currently serves as Editor-in-Chief of

Experiments in Fluids. She previously served as Chair of the American Physical Society Division of Fluid

Dynamics (2016), member of the United States National Committee on Theoretical and Applied Mechanics

(2011-2015) and Associate Editor of Physics of Fluids (2008-2013).

Ellen Longmire University of Minnesota, USA


11

Invited lecture

Monday, 1:00pm – 1:50pm

Monarchy 4

Chairman: Yosuke Hasigawa

(University of Tokyo)

Progress in Large Eddy Simulation studies of wind

turbine wakes and wind farms

Abstract: The talk centers on modeling wind farms using Large

Eddy Simulations (LES). In the first part of the talk we review the

basic properties of the Wind Turbine Array Boundary Layer

(WTABL), a new type of boundary layer in which the bottom

surface includes arrays of large turbomachines extracting

momentum and energy from the flow. We summarize the basic

properties of this flow and highlight the role that LES has played

in generating the new insights. We distinguish between actuator

disk and actuator line modeling approaches. Using actuator-disk

based LES, the structure of the mean flow as well as the spatio-

temporal statistics of the fluctuations will be discussed. Then, we

describe recent efforts to improve the actuator line model (ALM),

a commonly used tool to represent wind turbine blades in LES.

We utilize a family of analytical solutions to the Euler equation

describing inviscid flow past Gaussian body force fields. Using

this analytical formulation, we find that using a Gaussian body

force with a kernel size of about 1/4 of the chord length yields

most accurate predictions of the velocity field and loads along the

blades. This result is consistent with empirical findings by several

groups, when ALM is implemented and tested using various filter

sizes. In simulations it is shown that it is the accurate

representation of the thickness of the tip vortices and the

associated downwash close to the tip which results in accurate

predictions of the tip losses. For coarser-scale LES that cannot

afford resolving the optimal kernel size, an additional correction

must be introduced, which can also be expressed using the

analytical solutions to flow over Gaussian body forces. We show

that this result is equivalent to a Gaussian filtered version of a

generalized Prandtl's lifting line theory. Motivated by practical

implementation needs, we introduce several approximations based

on a numerical solution of the resulting Fredholm integral

equation. Results confirm that by using the proposed correction,

kernel-size independent predictions of lift coefficient and total lift

forces that agree very well with those obtained with the optimal

kernel size. This work is a collaboration with Tony Martinez-

Tossas, Matt Churchfield, Richard J.A.M. Stevens, Juliaan

Bossuyt, Johan Meyers and Dennice Gayme. We are grateful for

fruitful conversations with Jens Sørensen on ALM. CM is funded

by the National Science Foundation (the WINDINSPIRE project).

Charles Meneveau is the Louis M. Sardella

Professor in the Department of Mechanical

Engineering at Johns Hopkins University. He also

has a joint appointment in the Dept. of

Environmental Health and Engineering, and is

Associate Director of the Institute for Data

Intensive Engineering and Science (IDIES) at

JHU. He received his B.S. in Mechanical

Engineering from the Universidad Técnica

Federico Santa María in Valparaíso, Chile, in

1985 and M.S, M.Phil. and Ph.D. degrees from

Yale University in 1987, 1988 & 1989. In

1989/90 he was a postdoctoral fellow at the

Stanford University/NASA Ames' Center for

Turbulence Research. Professor Meneveau has

been on the Johns Hopkins faculty since 1990. His area of research is focused on understanding and modeling hydrodynamic turbulence, and complexity in fluid

mechanics in general, with combined computational, theoretical and experimental tools. Special emphasis is placed on

the multiscale aspects of turbulence, using appropriate tools such as subgrid-scale modeling, downscaling techniques,

and fractal geometry, and applications to Large Eddy Simulation (LES). The insights that have emerged from Professor

Meneveau's work have led to new numerical models for Computational Fluid Dynamics and applications in engineering

and environmental flows. Currently he is focused on applications of LES to wind energy (the WINDINSPIRE project),

and on methods to share the very large data sets that arise in CFD. The latter effort has led to the Johns Hopkins

Turbulence Databases ( JHTDB), a set of web-services accessible datasets arising from Direct Numerical Simulations

of Turbulence. Professor Meneveau is a foreign corresponding member of the Chilean Academy of Sciences, and a

Fellow of the American Academy of Mechanics, the U.S. American Physical Society and the American Society of

Mechanical Engineers. He received an honorary doctorate from the Danish Technical University (in 2016), the

inaugural Stanley Corrsin Award from the American Physical Society (2011), the 2004 UCAR Outstanding Publication award (with students and other colleagues at JHU and NCAR), the JHU Alumni Association's Excellence in Teaching

Award (2003), and the APS' François N. Frenkiel Award for Fluid Mechanics (2001). He is Deputy Editor of the

Journal of Fluid Mechanics and served for 13 years as the Editor-in-Chief of the Journal of Turbulence (until 2015).

Charles Meneveau Johns Hopkins University, USA

http://windinspire.jhu.edu/

http://turbulence.pha.jhu.edu/


12

Keynote speech

Tuesday, 10:30am – 11:10am

Monarchy 5

Challenges and Opportunities for Adaptive

Composite Marine Structures

Chairman: Paul Brandner

(University of Tasmania)

Abstract: In recent years, there has been an increased interest

in the use of advanced materials for maritime applications,

including propellers, turbines, control surfaces, and energy

harvesting devices. Compared to traditional metallic alloys,

advanced polymer composites offer the advantage of higher

strength-to-weight ratio, better fatigue characteristics, higher

durability, and better resistance to sea water corrosion and

other chemical agents. Moreover, active materials, sensors, and

actuators can be embedded inside composites to enable in situ

health and condition monitoring, mitigation and control of

flow-induced vibrations, energy harvesting, and active control

of surface morphology and structural properties to improve

system performance. However, care is needed in the design,

analysis, and testing of advanced composite marine structures.

It is important to recognize that lightweight and flexible marine

structures can be intrinsically more sensitive to changes in flow

conditions and rapid manoeuvres. High frequency flow

fluctuations or rapid manoeuvres may excite one or more of the

system or component natural frequencies. Prediction and

control of the dynamic response is complicated by the fact that

the natural frequencies and damping characteristics of a marine

structure vary with the solid to fluid density ratio, proximity to

free surface, forward speed, cavitation and ventilation. In

addition, nonlinear feedback between the flow and body

deformations may lead to unwanted effects such as flow-

induced vibrations, frequency modulations, lock-in, flutter,

buffeting, resonance, parametric excitations, and even

divergence. Hence, the focus of this work is to understand,

predict, and strategically exploit the fluid-structure interaction

response and stability of adaptive composite marine structures

in complex, multiphase flows. The knowledge is necessary to

facilitate design and operation of the next generation of multi-

functional marine structures. In addition, we will demonstrate

how to use embedded sensors and take advantage of flow-

induced deformations to identify unknown system parameters

and infer in situ 3-D deformation patterns, modal

characteristics, hydrodynamic load and internal stress

distributions. We will also demonstrate how to take advantage

of known modal characteristics of the marine structure to

vector the flow and control multiphase flow.

Julie Young is a Professor at the Department of Naval Architecture and Marine Engineering and the Director

of the Marine Hydrodynamics Laboratory at the University of Michigan. Prof. Young is internationally well

known for her work on modeling of adaptive composite marine propulsors and turbines. Prof. Young is a

member of the Seakeeping Committee for the International Towing Tank Committee (ITTC), and a member of

the joint ITTC-ISSC Working Group. She was also the Society of Naval Architecture and Marine Engineering

representative on the United States National Committee on Theoretical and Applied Mechanics between 2009-

2014. Prof. Young is an Editorial Board Member on Acta Mechanica Sinica, and an Associate Editor for the

Journal of Offshore, Mechanics, Artic, and Ocean Engineering. Prof. Young has written over two hundred

journal and conference papers in the area of fluid-structure interactions related to maritime structures.

Yin Lu Young University of Michigan, USA


13

Keynote speech

Tuesday, 10:30am – 11:10am

Ultraviolet Image-based Techniques for Strain

Measurement at Extreme Temperatures

Monarchy 4

Chairman: Tadd Truscott

(Utah State University)

Abstract: Extreme temperatures play a role in a growing

number of engineering applications, including hypersonic

flight, gas turbine engines, spacecraft re-entry, and next-

generation nuclear reactors. In order to design for any of

these applications, structural materials must be characterized

to ensure that they can withstand the combined thermo-

mechanical environment. One popular characterization

method is digital image correlation (DIC), in which a

deformable test specimen is patterned with a high-contrast

surface pattern, then recorded with a high-resolution digital

camera before and after deformation to compare the images

and compute full-field displacements and strains. At

extreme temperatures, materials emit light in the form of

blackbody radiation which can saturate the camera sensors.

This light is known to be brighter at longer wavelengths,

and can be mitigated by using optical bandpass filters. In

this work, it is shown that by using ultraviolet (UV)

cameras, lenses, and filters the temperature range of DIC

can be effectively extended. The UV-DIC technique is then

applied to a variety of 2D and 3D applications in order to

measure heterogeneous strains at various temperature, time,

and length scales. Additionally, standard 3D measurements

using DIC usually involve the use of at least two cameras,

which can be both costly and difficult to synchronize. More

recently, other researchers have demonstrated a novel

method known as Diffraction-Assisted Image Correlation

(DAIC), which makes 3D measurements using only a single

camera: a diffraction grating is placed between the camera

and the specimen, resulting in multiple views that can both

be captured by one camera. The diffraction grating requires

that testing be performed using a monochromatic light

source. DAIC has already been demonstrated at room

temperature using monochromatic red light, but in principle

other colors should work as well. In this work, DAIC is

extended to extreme temperature conditions by substituting

a UV monochromatic light source and filters for the red.

This new method, UV-DAIC, provides a cheap and

effective alternative to stereo UV-DIC for measuring 3D

deformation and strain at a high temperature. The method

enables to measure the out-of-plane deformation of a beam

which bends at non-uniform high temperature.

Ryan Berke is an Assistant Professor of

Mechanical and Aerospace Engineering at

Utah State University, where he is the

Director of the Nuclear Engineering

Research Center (NERC) and Mechanics at

Extreme Temperatures Lab (METL). His

research focus is in experimental solid

mechanics in challenging environments, and

at extreme temperatures in particular. His

lab uses advanced image-based methods to

record fullfield temperatures, displacements,

and strains using an advanced camera

system which is potentially the highest

temperature field measurement capability of

its kind. He studies heterogeneous failure

mechanisms including fracture, fatigue, and

creep; with applications geared towards the

energy, aerospace, and nuclear industries.

Since joining Utah State in 2015, his lab has received funding from the US Dept. of Energy, the AF

Research Lab, the Nuclear Regulatory Commission, and NASA. Dr. Berke received his BS in Mechanical

Engineering from the University of Maryland, College Park, and his PhD in Mechanical Engineering from

The Ohio State University, where his dissertation research was on thermo-mechanical characterization in

solid oxide fuel cells at temperatures up to 800C. He then worked as a postdoctoral researcher in Aerospace

Engineering at the University of Illinois, Urbana-Champaign, studying thermo-mechanical fatigue in nickel

superalloys at temperatures up to 1125C. More recently, he has also worked as a summer faculty fellow at

the Air Force Research Lab's Turbine Engine Fatigue Facility. He currently holds leadership positions in the

Society for Experimental Mechanics (SEM) Fracture & Fatigue Division, as well as the American Society

for Mechanical Engineering (ASME) technical committee for Experimental Mechanics.

Ryan Berke Utah State University, USA


14

Invited lecture

Tuesday, 11:10am – 12:00pm

Challenges and Opportunities in Prediction of Turbine

Thermal Systems

Monarchy 4

Chairman: Joseph Schetz

(Virginia Tech)

Abstract: Computational Fluid Dynamics (CFD) plays a

significant role in the industrial design of gas turbine

components. The desire for higher thermal efficiencies has

steadily increased the turbine inlet temperature putting

very stringent requirements on materials and on blade

cooling technologies in the high-pressure turbine section

to do more with less coolant mass flow rates. Both

internal and external cooling is utilized. While internal

cooling protects the first stage nozzle vain and blade

through internal cooling channels, external cooling is

mostly through injection of coolant through discrete hole

injection on the blade surface. A wide variety of

geometries and techniques are used in internal cooling

ranging from serpentine channels to double-walled blades

equipped with turbulence generators ranging from ribs of

different configurations, pin fins, protrusions, dimples,

impinging jets, etc. The intricate geometry of high-

pressure turbine blades coupled with complex external and

internal turbulent flow makes accurate thermal predictions

of blade metal temperatures a grand challenge. Amongst

the different fidelity models available, unsteady methods

based on the principles of Large-Eddy Simulations (LES)

when combined with high performance parallel computing

show promise. LES and other unsteady methods instill

better predictability but are much more expensive than

Reynolds-Averaged Navier-Stokes Simulations (RANS).

Unsteady methods because of their high computational

complexity mandate the use of parallel computing on

modern high-performance computing (HPC) architectures.

Supercomputing has evolved from single processor vector

units in the early 90’s to hundreds of thousands of

processing units with complex hierarchical memory sub-

systems exhibiting different bandwidths and latencies,

which need to be recognized by the application for

effective use. The lecture will describe the challenges in

predicting turbine blade heat transfer and in the adaptation

of modern HPC architectures and programming models to

CFD. The lecture will elaborate on progress made in the

last two decades and opportunities for advancing

prediction capability by using techniques and methods

from CFD mapped effectively to modern HPC

architectures for high performance and reduced

turnaround times

Danesh Tafti is the William S. Cross

Professor in the Department of Mechanical

Engineering at Virginia Tech. He obtained

his Ph.D. from the Mechanical Engineering

Department at Penn State University in

1989. After two years of post-doctoral work

he joined the National Center for

Supercomputing Applications (NCSA) at

the University of Illinois at Urbana-

Champaign, where he held positions of

Research Scientist, Senior Research

Scientist, and Associate Director. He joined

the Mechanical Engineering Department at

Virginia Tech in 2002 where he directs the

High Performance Computational Fluid-

Thermal Science and Engineering Lab. In

2009, he was named the William S. Cross

Professor of Engineering. His research

interests are in high-end, multiscale and

multiphysics simulations of single and multiphase systems in the broad areas of propulsion, energy and

biological systems. He has over 200 peer reviewed publications to his credit and has given several invited

and keynote lectures at national and international conferences. He is a Fellow of ASME, Associate Editor

of ASME J. Heat Transfer and editorial board member of the Int. J. Heat and Fluid Flow.

Danesh Tafti Virginia Tech, USA


15

Invited lecture

Tuesday, 1:00pm – 1:50pm

Monarchy 4

Chairman: Kamel Fezzaa

Dynamic, multidimensional X-ray tomographic

microscopy: opportunities on synchrotrons and in your

lab

(Argonne National Laboratory) Abstract: Modern synchrotron facilities allow nowadays

non-destructive tomographic (3D) investigations at micron-

and sub micron-scale routinely. Recently, latest

developments in optics and detectors enabled to perform

such investigations dynamically, i.e. with time resolutions up

to a few tenth of tomograms (volumes) per second, and to

sense structural orientations in multiple directions under

sample conditioning. The presentation will review the

instrumentation required for this kind of experiments at

synchrotrons, in particular as developed at the TOMCAT

beamline at the Swiss Light Source, and will discuss several

applications in the field of materials, earth, pharmaceuticals

and life sciences. The presentation will also discuss how far

some of these methods can be transferred to conventional X-

ray sources, i.e. made available to many labs worldwide.

Marco Stampanoni is Associate Professor for X-ray Imaging at the Department for Information Technology

and Electrical Engineering of ETH Zurich since June, 2013. His professorship is affiliated to the Institute of

Biomedical Engineering of the University and ETH Zurich, where he leads the division for X-ray Imaging

and Microscopy. At the Paul Scherrer Institut, he is the head of the SLS X-ray tomography group. Born on

May 10, 1974 in Lugano (Ticino, Switzerland) Marco Stampanoni studied physics at the ETH Zurich. After

receiving his diploma in 1998, he graduated at the ETH in 2002 in the area of synchrotron-based

tomographic microscopy. For his PhD, he received the ETH silver medal in 2003. From 1998 to 2000 he

successfully followed a post-graduate course in Medical Physics. In 2002 he started as an Instrument

Scientist at the Swiss Light Source (SLS) of the Paul Scherrer Institut in Villigen, Switzerland. In 2004 he

was nominated beamline scientist and responsible for the development and realization of a tomography

dedicated beamline at the SLS. In 2005 he was elected Head of the "X-ray Tomography Group" of the SLS.

In 2008 he was appointed Assistant Professor for X-ray Microscopy at the ETH Zurich and, in 2010,

Director of the ETH-Master of Advanced Studies (MAS) in Medical Physics. In 2012 he received an ERC

Grant for his project on phase contrast X-ray imaging and won the "Dalle Molle Foundation Award" for his

pioneering work on X-ray phase contrast mammography. He is teaching at ETH Zurich in the field of X-ray

microscopy. With his team, Marco Stampanoni is working on novel X-ray based instruments and methods

for non-invasive investigations of samples at various length scales, ranging from single cells up to humans.

The group mainly develops around cutting-edge synchrotron facilities and translates the novel technologies

on conventional X-ray sources. Research areas encompass phase contrast X-ray imaging and microscopy,

realtime tomographic microimaging, nano-tomography and novel radiological methods for clinical

applications and, more general, non-destructive testing.

Marco Stampanoni ETH Zürich, Switzerland


16

Keynote speech Multispectral and multiscale infrared imaging for the study of

heat and mass transfer in heterogeneous media

Monarchy 4

Chairman: John Allen

(University of Hawaii)

Abstract: In the aerospace industry, the implementation of composite

materials is constantly increasing. During the elaboration process of

these materials or during the life of the materials, it is important to

monitor the thermophysical properties and their strength. Many

techniques exist to verify the quality of fiber organization using

destructive methods. Nevertheless, the Non-Destructive Technique

(NDT) is a powerful tool for online monitoring and for quantitative

and fast characterization. The first part of this presentation will be

devoted to the development of InfraRed multiscale thermal characterization of such heterogeneous media. To realize such

characterization the experimental set-up based on flying spot

technique will be presented as well as processing, an analysis of the

transient field of the temperature response based on analytical

modelization. The use of new scanning systems based on a

galvanometer mirror allows the easy control of the spatial and

temporal displacements of a laser hot spot over a plane surface. Such

systems are then suitable for use in developing new flying spot

methods as alternatives to the initial flying spot technique, which is

based on a constant velocity of the spot. Due to the great number of

pulsed spots deposited with this technique it becomes possible to

estimate in-plane fields of anisotropic thermal diffusivities by using

the spatial logarithmic processing of the temperature response. Here,

the method is presented as well as the first results on the

heterogeneous anisotropic composite materials. In a second part, the

study of multiscale heterogeneous solid materials has been extended

to the study of multispectral heat and mass transfer in microfluidic

systems. In fact, the recent development of the Fast Infrared Imaging

Spectroscopic Technique (FIIST) allows simultaneous acquisition of

temperature and concentration fields, using a non-intrusive method

and also Thermal Imaging Velocimetry (TIV). The study in the

middle-wave infrared range, from 2 to 6 µm, enables the study of

compounds which can be transparent in visible, without the additions

of tracers and its influence on mass diffusion. In this work, the

exothermic acid-base reaction between sodium hydroxide and

hydrochloric acid is performed in a co-flow microfluidic chip of high

aspect ratio. This configuration makes it possible to obtain laminar

flows where the mixture of the species is then only due to a radial

diffusion process and advection. Mass diffusion cone makes out since

water transmittance is increased in presence of the ion pair of Na+ and

Cl-. Both heat and mass diffusivities are estimated from the

logarithmic parabolas method, originally developed for thermal

transfer but applied here also in the mass transfer case since the

diffusion transport equation which is similar in both cases. Finally, in

a last part, the beginning of thermospectroscopic tomography will be

presented with imaging system that is able to measure transient

temperature phenomena taking place inside a bulk by 3D tomography.

This novel technique combines the power of multispectral waves and

the high sensitivity of infrared imaging. The tomography

reconstruction is achieved by the 3D motion of the sample at several

angular positions followed by inverse Radon transform processing to

retrieve the 3D transient temperatures. The aim of this novel

volumetric imaging technique is to locate defects within the whole

target body as well as to measure the temperature in the whole

volume of the target. This new-fashioned thermal tomography will

open research perspectives in the non-invasive monitoring techniques

for volume inspection and in-situ properties estimations.

Christophe Pradere has obtained his PhD

degree at ENSAM-PARISTECH School on

thermal characterization of carbon fiber at

very high temperature. Since 2006 he is a

French CNRS researcher at I2M institute

with research field around heterogeneous

thermal system of energy conversion by

using multispectral imaging. Since 2015, he

is also associated researcher at Tokyo

Institute of Technology. In 2017, he has

become associated researcher at LOF

laboratory as well as senior researcher at

Tomsk University. During this period, Dr.

Pradere has published 60 papers, 6 patents, 6

invited conferences, and more than 50

international congress. In 2015, his team has

realized the cover of the international

Chemical Engineering Journal for work in

thermal and microfluidic, and also obtained

the award of the Biot-Fourier prize from the

French thermal society for the work in

thermal tomography and the silver photon of

the photonic show for multispectral imaging

technique. Finally, he is the cofounder of the

NeTHIS (New THz Imaging System) start

up and manager of the TIFC team (Thermal

Imaging Fields and Characterization) at

TREFLE department of the I2M institute.

Christophe Pradere CNRS / I2M Institute, France

Wednesday, 10:30am – 11:10am


17

Keynote speech

Wednesday, 10:30am – 11:10am

Monarchy 5

Achievements and Challenges of CFD for

Turbomachinery

Chairman: Satoshi Watanabe

(Kyushu University)

Abstract: The objective of CFD is to provide efficient,

quick, and reliable analysis tools, helping designers and

opening the door to CFD-driven automatic optimization. The

presentation will focus on several important aspects in

turbomachinery CFD:

- Robust and quick mesh generation, including meshing of

leakage and other non primary flow paths

- Solver convergence acceleration

- Modeling of unsteady flows with harmonic methodology

- Automatic optimization

- Fluid-structure interaction

- Modeling of acoustic effects

.

Alain Demeulenaere has been working for NUMECA International since 1997, and the Managing Director

of NUMECA-USA since 2005. NUMECA International, based in Brussels, has been developing

computational fluid dynamics (CFD) software for the turbomachinery industry for 20+ years. NUMECA is

known for being very research-oriented, led by President Charles Hirsch, who is very known in the field and

has published successful educational books on CFD. After receiving a PhD at the von Karman Institute

(Brussels), Alain was one of the major developers of the NUMECA software, and then moved to the USA to

develop NUMECA’s business and expand awareness throughout North America.

Alain Demeulenaere NUMECA USA


18

Invited lecture

Wednesday 11:10a – 12:00p

Monarchy 4

Design & Implementation of a 3D-PTV System

Chairman: Chris Willert

(DLR)

Abstract: The dream of experimental fluid dynamicists is

to be able to measure complex, three-dimensional turbulent

flow fields globally with very high spatial and temporal

resolution. While we are still far from fully realizing this

dream, significant progress has been made towards this

goal during the last three decades. Early quantitative

measurement methods using Pitot tubes, Venturi tubes and

later measurement methods, such as Hot Wire

Anemometry (HWA) and Laser-Doppler Anemometry

(LDA), by their nature, were measurement methods that

provided instantaneous velocity signals at single-points

through time. Early emphasis in turbulence research and its

theoretical advancement therefore necessitated a statistical

description of turbulent flow fields, which relied heavily

upon measurements provided by these single-point

measurement techniques. Since the early seventies, the

discovery of the existence of three-dimensional coherent

structures within turbulent flows using qualitative flow

visualization methods (i.e. shadowgraphs, Schlieren

systems, dye injection, etc) has been of significant interest

for turbulence researchers. While flow visualization

techniques have been around since the days of Prandtl, it is

only due to the advent of modern imaging, laser, and data

acquisition technology has allowed for qualitative flow

visualization to become quantitative. These advents have

allowed for the development and advancement of are

relatively new measurement technique, Particle Image

Velocimetry (PIV) and Particle Tracking Velocimetry

(PTV) in two dimensions, and more recently in 3

dimensions. Because of its ability to provide global

two/three-dimensional kinematic information as well as its

ability to map the evolution of coherent structures through

time, PIV/PTV has become a powerful tool in studying,

understanding, and modeling fluid flow behavior. In this

talk, I will describe the particulars of the 3D Particle

Tracking Velocimetry method we have developed and

touch on some applications in microflows and LES studies.

Dana Dabiri is Associate Professor at

the William E. Boeing Department of

Aeronautics & Astronautics at the

University of Washington, in Seattle.

He received his B.S. in Mechanical

Engineering at the University of

California, San Diego in 1985; he

received his M.S. in Mechanical


California, Berkeley in 1987; and he

received his PhD in Aerospace


California, San Diego in 1992. He was

a Post-doc at Caltech from 1992-1993, and continued at Caltech as a research scientist until the end

of 2001. In 2002, he joined the faculty at the William E. Boeing Department of Aeronautics &

Astronautics as an Assistant Professor, and was promoted as an Associate Professor in 2009. He

serves as an associate editor for the Journal of Visualization since 2009. His work pursues developing

novel ways for quantitatively visualizing the movements of fluids. Most recently, Professor Dabiri's

research activities have developed novel implementations of 2D and 3D digital particle tracking

velocimetry (2DPTV & 3DPTV) system that allows for high-resolution measurements of fluid flows.

Dana Dabiri University of Washington, USA


19

Invited lecture

Wednesday 1:00pm – 1:50pm

Monarchy 4

On the Application of Optical Measurement

Techniques in Thermal Turbomachines

Chairman: Roberto Pacciani

(University of Florence)

Abstract: In the last decades progress in optical measurement

technology enabled its application in turbomachinery

research. This work aims to review research work in this field

performed by the Institute for Thermal Turbomachinery and

Machine Dynamics at Graz University of Technology. In the

first part, attention is focussed on stereoscopic PIV, a planar

non-intrusive time-resolved measurement technology. The

requirement for unsteady measurement techniques suitable for

turbomachinery applications became more intense, since the

designers need this flow data in order to validate their

advanced numerical simulations, understand the flow physics

and be able to further optimize their modules in terms of

unsteady component interaction.The flow through modern

thermal turbomachinery is characterized by subsonic and

transonic regions with a high level of turbulence and a

significant level of unsteadiness. The unsteadiness in the flow

is related to the relative motion between rotor and stator with

rotor blade passing frequencies up to 20 kHz and above. In

multistage axial turbomachinery the unsteady mixing of

wakes from stator and rotor blades during rotor-stator motion

results in a complex three-dimensional (3-D) flow field

especially when shock systems are present being reflected by

passing blades. The use of intrusive measurement techniques

in such a sensitive regime can alter or disturb the flow and

sometimes large measurement uncertainties have to be taken

into account. Therefore the application of time-resolved

optical non-intrusive techniques can help to provide the

engine designer with more reliable results. Fast recording of

three-component velocity providing ensemble averaged as

well as instantaneous data is an advantage of PIV, especially

in turbomachinery research with its highly unsteady flows and

test rigs that are expensive in operation. Thus PIV offers a

major advance for the experimenter but is not without

disadvantages. Due to the high flow velocities very small

tracer particles have to be used and imaged well focused

through windows of special design. Also the designer is often

interested in pressure losses, which cannot be quantified by

PIV. To overcome these disadvantages also other planar and

pointwise measurement techniques are demonstrated and

discussed, such as high-speed Schlieren visualization, Laser

Interferometry and a Background-Oriented-Schlieren

technique. These measurement techniques focus on the direct

assessment of the density field or density fluctuations and do

no longer base only on velocity measurements.

This work concludes with an outlook of future applications

of optical measurement techniques for turbomachinery

applications at the Institute for Thermal Turbomachinery of

TU Graz.

Emil Göttlich is an Associate

Professor in Thermal Turbomachinery.

He belongs to the teaching staff and is

also the head of the Turbomachinery

Laboratory of the Institute of Thermal

Turbomachinery and Machine

Dynamics of the Faculty of

Mechanical Engineering and

Economic Sciences at Graz University

of Technology. Furthermore, he is part

of the working group "Metrology in

Turbomachinery - Laser Optical

Metrology" there. Emil Göttlich

received his PhD in Turbomachinery

Aerodynamics in 2004 and his Dipl.-

Ing. in Mechanical Engineering in

2000 from Graz University of

Technology. He worked as a Research

Associate and as Senior Scientist in

the field of turbomachinery at TU

Graz since December 2000. Dr

Göttlich is active in the areas of axial

flow turbine and duct aerodynamics,

test rig design and unsteady flows in

turbomachinery.

Emil Göttlich Graz University of Technology, Austria


20

Keynote speech

Thursday, 8:30am – 9:10am

Monarchy 4

Digital Image Correlation for investigating the behavior

of composite materials


(Virginia Tech)

Abstract: Composite structures are now widely used in the

aerospace industry because of their outstanding specific

performances. Nevertheless, these structures exhibit very

complex behaviors that are still difficult to predict.

Kinematic full-field measurements now allow us to take a

new look at the mechanics of such structures, and to

perform experiments in situations more representative of

their use (structural tests, multiaxial tests, etc.). Due to its

simplicity of use, its wide range of applications (shape and

displacement measurements, large deformations, dynamics,

etc.) and its unique ability to exploit different imaging

modalities (tomography, microscopy, etc.), Digital Image

Correlation (DIC) has become the reference method in

laboratories today. The subset-based approach initiated in

the 1980s, similar to classical PIV, is still in the hands of

software publishers who equip most laboratories. However,

this approach to DIC does not make interfacing

measurements and models easy. In the course of the 2000s,

new formulations of the DIC (so-called global) were

proposed. They make it possible to integrate a more or less

important mechanical a priori. For example, the FE-DIC

makes it possible to use a Finite Element description of the

displacement field. It is therefore possible, in theory, to

exploit the optimized FE mesh built for simulation purposes.

This provides the opportunity to avoid reprojection issues

when comparing simulations and experiments, to integrate

the model into the measurement in order to regularize it, or

even to identify constitutive parameters directly from

images (Integrated DIC). Some examples of developments

(in 2D, in stereo and volume DIC) conducted around these

aspects will be presented. The interest of "multi-scale"

instrumentation in the context of identification, but also in

the case of structural tests performed on large notched

laminate panels, will specifically be detailed.

Jean-Noël Périé is a former student of the

Ecole Normale Supérieure de Cachan. He

passed the Agrégation (french professional

teaching qualification) in 1994 and

graduated in 1995. He obtained his PhD in

2000 from Ecole Normale Supérieure de

Cachan under the supervision of Professor

P. Ladevèze on the topic of “Damage meso-

modelling of a 2.5D C/C composite”. Then,

he passed his habilitation thesis to supervise PhDs on “Digital images and mechanics of composite materials

and biological tissues”. He is now Associate Professor at "Université Paul Sabatier". He teaches mainly in

the mechanical engineering department of the “IUT 'A' Paul Sabatier”, but he also gives master classes

focused on “Photomechanics”. He conducts his research at Clement Ader Institute. He is also the head of

the team « Identification and Control of Thermic and Mechanical Properties » (5 researchers). His main

interests are the experiment/simulation dialog and the identification of constitutive parameters. In particular,

he developed identification techniques to retrieve constitutive parameters from full field measurements. He

participated several times to CNRS summer school, and he has coauthored chapters in 3 books on this

subject. He has also been involved in the development of several measurement techniques such as Digital

Image Correlation (DIC), Digital Volume Correlation (DVC), Stereo Digital Image Correlation (SDIC),

Multiscale DIC, etc. In addition, He has significant experience in the characterization of composite

materials, and more generally in experimental mechanics.

Jean-Noël Périé Université Paul Sabatier, France


21

Keynote speech

Thursday, 8:30am – 9:10am

Monarchy 5

Fast particle ejection by a growing laser-induced bubble

Abstract: Cavitation involves the physical processes of the

"explosive" growth, or expansion, and the "implosive" collapse

of vapor-filled bubbles, driven by tension in the liquid, or a

local deposition of energy. In hydrodynamic systems, the

erosion of solid materials is among a number of undesirable

effects promoted by cavitation, which can damage or impair

the components of hydraulic machines. The causal mechanism

of the damaging power of cavitation is believed to be a

consequence of the effects of high-speed micro-jets resulting

from the asymmetric collapse of cavitation bubbles near solid

boundaries.Nevertheless, a much greater erosion rate has been

observed when cavitation occurs in silt-laden water as

compared with the sum of both cavitation and silt erosion

considered separately. Despite a few analytical attempts, the

micro-mechanism of this enhancement of erosion, in terms of

the interactions between the cavitation bubbles and the silt

particles, remains poorly understood. In fact, the coexistence of

cavitation bubbles and solid particles is also found in other

scenarios, e.g., ultrasonic cleaning, kidney stone fragmentation,

and drug delivery by ultrasonic cavitation. To simulate the

dynamics of a particle near a cavitation bubble, we designed

and fabricated an experimental setup, and for the first time

study the interactions between a laser-induced vapor bubble

and a free-settling particle. Also, we establish a force balance

model to account for the bubble and particle dynamics. Results

show that four non-dimensional parameters influence the

particle-bubble dynamics. The maximum particle velocity and

the conditions of single particle-bubble bounce have been

reasonably predicted. In cases when the particle is initially in

very close proximity to the bubble center, we also discover the

high-speed ejection of the particle, and the formation of a

cavity behind the particle. The maximum particle velocity

reached over 60 m/s, which is enough to induce plastic

deformation of a stainless steel plate. The fact that a similar

phenomenon of high-speed particle ejections occurs with a

system of tension-generated bubbles and suspended particles

suggests that the dynamics described here may serve as one of

the causal mechanisms for the enhanced cavitation erosion in

silt-laden water.

Zhigang Zuo received his MSc degree from Tsinghua University in 2002 (major in Fluid Machinery and

Engineering), and his PhD degree from Warwick University (UK) in 2008 (major in Fluid Mechanics). He

now works in the State Key Lab of Hydroscience and Engineering, and Department of Thermal

Engineering, Tsinghua University. His main research interests include a) bubble dynamics, especially

involving the interaction between a laser-induced cavitation bubble and a free-settling particle (published in

Physical Review Letters), which will be presented this time; b) cavitation with thermal effects; c)

instabilities in fluid machinery, e.g., passive control of hydrofoil stall with biomimetic method, the "S"

characteristics and positive slopes in pump-turbines, etc. d) heart pump.

Zhigang Zuo Tsinghua University, China

Chairman: Shuhong Liu

(Tsinghua University)


22

Invited lecture

Thursday 9:10am – 10:00am

Monarchy 4

Digital Image Correlation: Full-field quantitative data

from micrometers to meters and hertz to megahertz –

the DIC journey from university curiosity towards an

industrially accepted technique

Chairman: Jean-Noël Périé

(Université Paul Sabatier)

Abstract: Digital Image Correlation (DIC) is a full-field

optical shape, displacement, and strain measurement

method that has developed wide use in mechanical

engineering for material testing and FE model validation.

The explosive growth of both imaging and computing

technology since the start of DIC in the 1990’s has greatly

increased its range of applicability and power. This talk

will highlight the growth of DIC through a range of

examples including quasi-static and high rate testing at

both the large scale and the micro-scale testing. However,

the acceptance of DIC in industry has been delayed by a

lack of testing standards and training and certification of

users. Furthermore, a thorough understanding of

uncertainty quantification (UQ) of the measurement -

particularly traceability - has also hindered DIC. I will

highlight the current approach to answering these problems

including the DIC Challenge results and our current

understanding of DIC uncertainty. I will then discuss future

directions of DIC.

Sandia National Laboratories is a multimission laboratory

managed and operated by National Technology and

Engineering Solutions of Sandia, LLC., a wholly owned

subsidiary of Honeywell International, Inc., for the U.S.

Department of Energy's National Nuclear Security

Administration under contract DE-NA-0003525.

Phillip L. Reu is a Principal Member of Technical Staff at Sandia National Laboratories. He has

received an MS in biomedical engineering from Rensselaer Polytechnic Institute and an MS and PhD

in mechanical engineering from the University of Wisconsin - Madison (2002). Phillip specializes in

developing novel full-field measurement techniques in previously un-measurable regimes often using

digital image correlation (DIC) or coherent optical measurement techniques. He was awarded the

Brewer award for outstanding experimentalist from SEM in 2016.Current research efforts in DIC are

focused on uncertainty quantification. Phillip is the author of the “Art and Application of DIC”

article series in the journal of Experimental Techniques, international instructor in DIC techniques

for "Metrology beyond colors", chair of the DIC Challenge, vice president of the international digital

image correlation society (iDICs), and pater familias to 5 kids.

Phillip Reu Sandia National Laboratories, USA


23

Invited lecture

Thursday 10:30am – 11:30pm

Monarchy 4

Fluid Mechanical Challenges in High-Speed Liquid

Turbomachines


(Virginia Tech, USA)

Abstract: Pumps are one of the most common components

of any hydraulic system. Their reliability and efficiency are

of ubiquitous and paramount importance. Despite many

indications of unfamiliar phenomena, academic interest in

the fluid mechanics of these devices was scant indeed for a

large part of the late 20th century and the design tools used

in industry remained confined to steady flow hydraulic

analyses and a few empirical vibration criteria. It was not

until extreme versions of unsteady flow difficulties arose in

the development of the high speed turbopumps in liquid-

propelled rocket engines that serious attention began to be

paid to the flow instabilities and fluid-structure interaction

problems in pumps. Methodologies had to be developed to

investigate these unsteady flows and practical design tools

had to be identified to predict and ameliorate their

consequences. This lecture will review some of these key

issues and the new fluid mechanics that was developed in

response to those challenges. Though the development of

liquid-propelled rocket engine pumps was a primary trigger

for this research, it is now recognized that the phenomena

and methodologies are common to many liquid

turbomachines. For simplicity, however, the present paper

will focus on the rocket engine application. Two key

milestones are worth noting. The first was the

identification in the 1960s of the Pogo instability that

plagued many of the early launch vehicles and caused the

destruction of some. This led eventually to an

understanding of the dynamic characteristics of the pumps

and how to use this knowledge to limit the instability of the

fuel and oxidizer feed systems. In this talk I review some

of the resulting investigations of the dynamics of cavitating

pumps. The second milestone occurred during the

development of the high speed pumps in the Space Shuttle

Main Engine when it became apparent that fluid-induced

rotordynamic forces substantially affecting the critical

speeds of the high speed pumps and thereby limiting their

operational range. Herein I briefly review some of the

newer understandings of these fluid-induced rotordynamic

effects. In more recent times, knowledge of these unsteady

flow phenomena is used in a wide range of pump

applications. But new and hybrid variations of these

instabilities continue to be uncovered and require attention.

Christopher Earls Brennen was born

in Belfast, Northern Ireland, and

educated at Oxford University. He

joined the faculty of the California

Institute of Technology in 1969 and

retired in 2010 as the Richard L. and

Dorothy M. Hayman Professor of

Mechanical Engineering, Emeritus.

During his Caltech career, he also

served as Vice-President for Student

Affairs, Executive Officer for

Mechanical Engineering, Dean of

Students and Master of Student

Houses. He is the author of over 250

technical papers in cavitation,

turbomachinery, multiphase and

granular flows. He is also the sole

author of four popular technical books,

"Cavitation and Bubble Dynamics",

"Hydrodynamics of Pumps", "Fundamentals of Multiphase Flow" and "Thermo-hydraulics of

Nuclear Reactors" (with many foreign language translations). His professional accolades include the

Fluids Engineering Awards from both ASME and JSME, NASA's New Technology Award, and the

Feynman Prize, Caltech's highest teaching honor. An avid outdoorsman, he received the American

Canyoneering Society's John Wesley Powell Award for his contributions to the sport of

canyoneering, including widely-used internet guide books.

Christopher Brennen CALTECH, USA


25

TECHNICAL SESSIONS ISROMAC & ISIMET

ISROMAC

Forum 1 Page 26

Forum 2 Page 28

Forum 3 Page 30

Forum 5/9 Page 32

Forum 6/7/8 Page 35

Forum 10 Page 36

Forum 13 Page 38

Forum 14 Page 40

Forum 15 Page 42

Forum 11 Page 44

Forum 16/18 Page 45

Forum 17/19 Page 46

Forum 20 Page 48

Forum 21 Page 50

Forum 24 Page 52

Forum 26/30 Page 53

Forum 27 Page 54

Forum 25/28 Page 56

Forum 29 Page 58

Forum 36 Page 59

Forum 32 Page 61

ISIMet Forum I3 Page 62

Forum I1 Page 63

Forum I7 Page 65


26

F1

Turbomachinery Broadband Noise Research in Europe

Abstract: The keynote will summarize the outcome of the

turbomachinery BB noise research, funded by the European

commission, over the past 12 years. The main results of the projects

PROBAND (2005-2008) and FLOCON (2008-2012) will be

presented. Moreover, an outlook will be given on the expected

research results of the ongoing project TurboNoiseBB, started in

September 2016.

Lars Enghardt joined DLR in 1997 and was appointed as head of the department of Engine Acoustics at the

Institute of Propulsion Technology in 2009. At the same time, Lars was appointed as Professor for Acoustics

of Turbomachinery- and Thermoacoustics at the University of Berlin. His field of expertise is

turbomachinery acoustics, in particular sound sources, sound abatement by active control and passive means,

and sound propagation in ducts. Lars has successfully led two level 1 European research projects,

PROBAND and FLOCON, both with 16 European partner organizations. Currently, he is leading the

HORIZON 2020 project TurboNoiseBB with 15 European partners. Moreover, he successfully organized the

19th joint AIAA/CEAS Aeroacoustics Conference in Berlin in 2013.

Michel Roger

Ecole Centrale de Lyon

Stéphane Moreau

University of Sherbrooke

AEROACOUSTICS OF AXIAL

AND RADIAL TURBOMACHINES

Organizers

Lars Enghardt

Institute of Propulsion Technology

(DLR), Germany

USA

MONARCHY 4

Keynote speech

http://isromac-isimet.univ-lille1.fr/index.php?rubrique=forum&num=1



27

F1-1

SU

ND

AY

Noise mechanisms - Chair: Damiano Casalino

10a – 10:20a M. Sanjose, S. Moreau RANS based analytical modeling of

broadband noise for a low-speed fan

10:20a – 10:40a S. Sasaki, S. Mukae, K.

Tsushima

Experimental Predicition of

Peroformances and Broadband Noise of a

Wind Turbine by a Blade Element Theory

10:40a – 11:00a P. Pelz, P. Taubert, F. Cloos Structure and Kinematics of the Tip

Vortex in Axial Turbomachines

11:00a – 11:20a T. Uffinger, F. Kromer, A.

Renz, S. Becker

Experimental Investigation of the Effect

of Different Inflow Conditions on the

Aerodynamic and Acoustic Behavior of

Centrifugal Fans

11:20a – 11:40a M. Roger, K. Kucukcoskun Near-and-Far Field Modeling of

Advanced Tail-Rotor Noise Using

Source-Mode Expansions

11:40a – 12:00p R. Sandberg, A. Wheeler Acoustic Feedback Loop Sensitivity to

Trailing-Edge Boundary Conditions in

High-pressure Turbine Flows

F1-2

SU

ND

AY

Turbofan Noise - Chair: Stéphane Moreau

2:00p – 2:40p L. Enghardt

Keynote

Turbomachinery Broadband Noise

Research in Europe

2:40p – 3:00p M. Roger, S. Moreau On Aerodynamic Noise Sources in Rotor-

Stator Stages Induced by Inflow

Distortions

3:00p – 3:20p M. Daroukh, S. Moreau, N.

Gourdain, J.F. Boussuge, C.

Sensiau

Complete Prediction of Modern Turbofan

Tonal Noise at Transonic Regime

3:20p – 3:40p C. Perez-Arroyo, T.

Leonard, M. Sanjose,

S.Moreau, F. Duchaine

Large eddy simulation of the source

diagnostic test turbofan for broadband

noise predictions

3:40p – 4 :00p D. Casalino, F. Avallone, I.

Gonzalez-Martino, D. Ragni

Aeroacoustic study of a wavy stator

leading edge in a realistic fan/OGV stage

F1-3

MO

ND

AY

Noise Reductions – Chair : Lars Enghardt

8:00a – 8:20a A. Bodling, A. Sharma Noise Reduction Mechanisms due to Bio-

Inspired Airfoil Designs

8:20a – 8:40a R. Serre, N. Gourdain, T.

Jardin, A. Sabate-Lopez,

V.S. Balaramraja, S. Belliot,

M.C. Jacob, JM. Mosche

Aerodynamic and acoustic analysis of an

optimized low Reynolds number propeller

8:40a – 9:00a M. Henner, B. Demory, P.

Moneyron, J. Oropeza

Acoustic prediction for multi-physic fan

optimization

9:00a – 9:20a F. Kromer, A. Renz, S.

Becker

Experimental investigation of the flow-

and sound-field of low-pressure axial fans

with different blade stacking strategies

9:20a – 9:40a S. Moreau, M. Sanjose, S.

Magne

Optimization of tonal noise control with

flow obstruction

9:40a – 10:00a H. Chen Noise of turbocharger Compressors


28

F2

Keynote speech Asymptotic description of flutter and forced response vibration

saturation by friction forces

Abstract: The estimation of the final vibration amplitude of a bladed disk

is of extreme practical importance: it constitutes an essential information

for the prediction of the level of high cycle fatigue of the blades, and for

the subsequent estimation of its operative life span. Both, in the case of

aerodynamic instability (flutter) and forced response, the increase in the

vibration level is saturated by the nonlinear damping introduced by the

friction forces at the interfaces between blade and disk, or at the included

dampers. The computation of the final amplitude of the saturated

vibration requires to solve a quite complicated nonlinear problem, which

can be reduced to a single sector with phase lag boundary conditions, and

requires considering several time harmonics in order to capture the details

of the nonlinear periodic oscillation that sets in. If the small unavoidable

differences among blades (mistuning) are also taken into account, then

the situation becomes even more complicated because the solution of the

mistuned vibration problem requires to consider not only a single sector

but the complete bladed disk. In this talk I will discuss the application of

multiple scales techniques in order to drastically simplify this problem.

The idea is to take into account the fact that all relevant effects present

(forcing and/or flutter growth rate, nonlinear friction damping, and

mistuning) are, in most practical situations, small effects that develop in a

time scale that is much longer than that associated with the elastic

vibration frequency of the tuned system. The resulting asymptotically

simplified models will be used to analyze the characteristics of the final

vibration states of both the tuned and mistuned bladed disk.

Carlos Martel is Professor of Aerospace Engineering at Universidad Politécnica de Madrid (Spain) since

2009, where he also completed his PhD in Applied Mathematics in 1995. His research activity started in the

field of nonlinear dynamics and pattern formation applied to basic fluid mechanics problems (convection,

water waves, boundary layer). In the past 15 years he has been involved in the study of different aeroelastic

problems in turbomachinery in close collaboration with the industry, mostly related to the analysis and

description of mistuning effects in the flutter and forced response vibration of rotors. He has published

more than 40 scientific and technical contributions, and has participated in more than 35 international

conferences. He has taken part in more than 30 research projects, leading 13 of them in the past 10 years.

Mathias Legrand

Mc Gill University

NON LINEAR STUCTURAL

DYNAMICS IN TURBOMACHINES

Organizers

MONARCHY 2

Loïc Salles

Imperial College London

Carlos Martel

Universidad Politécnica

de Madrid, Spain




29

F2-1

SU

ND

AY

Chair: Loïc Salles

10:00a – 10:40a C. Martel, R. Corral

Keynote

Flutter vibration amplitude saturation by

friction forces in a mistuned bladed disk

10:40a – 11:00a F. Figaschewsky, A.

Kühhorn

A Finite Element Based Least Square Fit

for the Assessment of Integral and Non-

Integral Vibrations With Blade Tip Timing

11:00a – 11:20a B. Hanschke, S. Schrape, A.

Kühhorn

Consequences of Borescope Blending

Repairs on Modern HPC Blisk

Aeroelasticity

11:20a – 11:40a A. Lupini, B. I. Epureanu A conditioning technique for projection-

based reduced order models

11:40a – 12:00p W. Tang, B. I. Epureanu Geometric Optimization of Dry Friction

Ring Dampers for Maximized Reduction

in Forced Responses

F2-2

SU

ND

AY

Chair: Loïc Salles

2:00p – 2:20p K-H. Becker Geometry variations and detail

optimization using a probabilistic

simulation program

2:20p – 2:40p M. Leontiev, V. Ivannikov,

S. Degtyarev

Radial roller bearings with flexible rings:

application to rotor dynamics and

extension to multibody simulations

2:40p – 3:00p Z. Qu, D. Hu, J. Wang, R.

Wang

Investigation on Dynamic Meshing

Process and Factors Influencing the Root

Crack Propagation Trajectory of a

Representative Aero-engine Gear Pair

3:00p – 3:20p H. Hetzler, F. Boy On the influence of co-rotating frictional

dissipation on self-excitation due to

internal damping

3:20p – 3:40p A. Vania, S. Chatterton, P.

Pennacchi, P. Rubio

Periodic breathing in transverse annular

cracks in real rotating machinery

F2-3

MO

ND

AY

Chair: Loïc Salles

8:00a – 8:20a L.Pesaresi, J.Armand,

C.W.Schwingshackl,

L.Salles, C. Wong

An advanced underplatform damper

modelling approach based on a microslip

contact model

8:20a – 8:40a A. Grolet, A. Renault, O.

Thomas

Energy localisation in periodic structures:

application to centrifugal pendulum

vibration absorber

8:40a – 9:00a T. Theurich, J. Groß, M.

Krack

Suppression of blade vibrations using a

nonlinear absorption concept

9:00a – 9:20a M. Scheel, J. Groß, M.

Krack

A Novel Approach for the Experimental

Nonlinear Modal Analysis of Shrouded

Turbine Blades

9:20a – 9:40a F. Nyssen, A. Batailly Investigations on thermo-mechanical

modeling of abradable coating in the

context of rotor/stator interactions

9:40a – 10:00a A. Thorin, N. Guérin, M.

Legrand

Rotor–stator interaction: reduction of a

nonsmooth thermo-elastic unidimensional

model


30

F3

Keynote speech Static and Dynamic Performances of Refrigerant-Lubricated

Compliant Bearings

Abstract: Air Cycle Machines (ACMs) are classified as high-speed

turbomachines and nowadays, most of the Environmental Control

Systems (ECS) on civil and military aircrafts are equipped with ACMs

that use Gas Foil Bearings (GFBs). GFBs can be used in an environment

different from air, like refrigerants in the ECS. Over the last 20 years, a

significant number of studies have shown that GFBs represent the best

options for a consequent range of applications. However, there are still

problems when one tries to implement GFBs into new systems,

particularly in refrigerant environment. Studies in this domain already

exist but they are either experimental or analytical but without specific

lubricant behavior analysis. Refrigerant-lubricated GFBs require a

specific Thermo-Elasto-HydroDynamic (TEHD) theoretical and

numerical model. In this paper, static and dynamic GFBs' behavior are

investigated when operating in refrigerating gas. A TEHD approach is

used in conjunction with gas constitutive equation to describe pressure,

density, viscosity and temperature. It involves the use of a GRE

(Generalized Reynolds Equation) for turbulent flow, a non-linear cubic

EoS (Equation of State) for two-phase flow, a 3D turbulent thin-film

energy equation, 3D thermal equations in solids and the foil distortion

consideration. Journal bearings' global parameters are calculated for

steady state and dynamic conditions.

ROTORDYNAMIC FLUID FORCE AND

MOMENT ACTING ON ROTORS,

SEALS AND BEARINGS

Organizers

Keynote speech

Benyebka Bou-Said is Professor at INSA de Lyon and researcher at LaMCoS in a variety of subjects concerned

with both fundamental and applied tribology, including hydrodynamics, fluid-structure interaction, rheology,

tribochemistry and biomechanics (joint and vascular diseases). Pr. Bou-Said's background in tribology

encompasses bearings, dampers, magnetic devices, including both fluid film and fluid-structure coupling and

biotribology. Pr. Bou-Said is the head of a research group involved in Tribology. He is the supervisor of more

than 40 PhD thesis and 70 Research Master. Professor Bou-Said is Fellow ASME and STLE, guest editor for the

Journal of Engineering Tribology (JET) and Tribology International and associate editor for Tribology Transactions and JET. He is chairman of the annual Leeds-Lyon International Tribology Conference. Pr. Bou-

Said is listed Who's Who in the World and has authored more than 100 papers. He has received the Tribology

Gold Medal at the Japanese Tribology Conference Nagasaki October 2000 for his prospective work in the field of

biotribology.

MONARCHY 1

Benyebka Bou-Said

INSA de Lyon

LaMCoS Laboratory France

Daejong Kim

University of Texas

Azzedine Dadouche

National Research Council

of Canada





31

F3-1

TU

ES

DA

Y

Chair: Azzedine Dadouche

2:00p – 2:40p B. Bou-Said

Keynote

Static and Dynamic Performances of

Refrigerant-Lubricated Compliant

Bearings

2:40p – 3:00p K. Becker, W. Seemann Stability investigations of an elastic rotor

supported by actively deformed journal

bearings considering the associated

spectral system

3:00p – 3:20p O. Bonneau, P. Jolly, M.

Arghir, R. Gauthier, J.

Dehouve

Experimental Identification of Fluid Thin

Film dynamic Coefficients for Space

Propulsion Turbo Pumps

3:20p – 3:40p B. Ertas Gas Bearing Technologies for Super

Critical CO2 Turbomachinery: Radial

and Thrust Bearing Development

3:40p – 4 :00p K. Takenaka, T. Hayashi, K.

Miyagawa

Application of CFD analysis for static and

dynamic characteristics of hydrodynamic

journal bearing

F3-2

WE

DN

ES

DA

Y

Chair: Daejong Kim

8:00a – 8:20a P. Varney, I Green Rotordynamics and Signature for

Diagnostics of a Mechanical Face Seal

Subject to Rubbing Contact

8:20a – 8:40a B. Tan, L. Stephens Analysis of End Face Rotary Valve Seals

Including Viscoelastic Effects

8:40a – 9:00a S. Bauerle, H. Hetzler Influence of seal compliance on

rotordynamic behavior

9:00a – 9:20a C. Wagner, T. Thümmel, D.

Rixen

Experimental Prediction of Instability in

Rotor Seal Systems using Output Only

Data

9:20a – 9:40a A. Ibrahim, D. Gillespie, J.

Garratt

Radial Pressure Distributions in an Air-

Riding Face Seal

9:40a – 10:00a K. Yamada, A. Ikemoto, M.

Uchiumi, T.Inoue Nonlinear Theoretical Analysis of RD

Fluid Force of the Annular Plain Seal

F3-3

WE

DN

ES

DA

Y

Chair: Benyebka Bou-Said

2:00p – 2:20p A-L. Zimmermann, R. H. M.

Giepman, Q. T. Nguyen Tran,

C. Aalburg, V. Guemmer

Design of a static test rig for advanced

seals and air bearing testing

2:20p – 2:40p A. Dadouche, Q.Yang, M. J.

Conlon, D. Kim

Frictional Properties of Foil Bearings

Under Start/Stop Conditions – Teflon vs.

PVD-Based Coatings

2:40p – 3:00p M. White "Energy Flux" - The missing link in

solving turbomachinery instability

problems?

3:00p – 3:20p H-J. Kim, J-M. Kim, H-M.

Ha, H-J. Kim, B-K. Choi

Failure Diagnosis of Gearbox based on

Feature Analysis by Ultrasonic

3:20p – 3 :40p


32

F5/9

Keynote speech

Damping Mistuning Effects on the Amplification Factor and Statistical

Investigation of Vane Packet

Abstract: A novel methodology to investigate statistically the effects of random

damping mistuning in vane systems is presented. The rotating components if

turbomachinery, which are called bladed disks or rotors, accelerate the mixture

of gas and air. The stationary airfoils, also known as stators or vanes, convert the

increased rotational kinetic energy into static pressure, redirecting the flow paths

of the fluid. The excitation forces induced from the interactions between the

fluid and the mechanical components act on the airfoils of the rotors and vanes.

Rotors are designed to be cyclically symmetric, where all sectors carry identical

structural properties. In practice, however, variations exist in structural

properties among individual sectors due to a variety of reasons such as

manufacturing tolerances, and operational wear. These blade-to-blade deviations

are referred to as mistuning, and they affect the free vibrations and forced

responses of bladed disk assemblies. It is known that while mistuning has a

beneficial effect on flutter, mistuning can create a significant increase in the

maximum response amplitudes experienced by a few blades. Thus, accurate

predictions of mistuned forced responses and the effects of mistuning on forced

response levels have been a major concern in the design of blade assemblies.

This study presents a novel methodology to investigate the influence of damping

variability from blade to blade in vane systems.

Bogdan Epureanu is a Professor of mechanical engineering at the University of Michigan. His current research blends

novel methods and theory with fundamental experiments in linear and nonlinear dynamics from macro to nano-scale.

Currently he focuses on aerospace and automotive structures, turbomachinery, and biological and epidemiological

systems. Examples include creating novel mechano-chemical dynamic models of nanoscale intracellular transport

processes, developing the next generation of highly-sensitive diagnosis and monitoring techniques, discovering novel

methods for forecasting tipping points in complex systems such as disease epidemics and ecological systems,

developing innovative reduced order models of multi-physics systems such as Li-ion batteries and complex structures,

creating advanced system identification and control methodologies for smart structures and fluid-structural systems.

Professor Epureanu has published more than 115 articles in archival journals, and has made numerous presentations at

conferences and universities. He serves as Associate Chair of the Division of Integrative Systems and Design at the

University of Michigan, and as an Associate Editor of Journal of Computational and Nonlinear Dynamics. Among his

honors are the 2004 American Academy of Mechanics Junior Achievement Award, an NSF Career Award in 2004, the

2003 ASME/Pi Tau Sigma Gold Medal Award, the 2001 Young Innovator Award from Petro-Canada, and the 2005

Beer and Johnston Outstanding Mechanics Educator Award by the American Society for Engineering Education.

Michele Marconcini

University of Florence

Tong Seop Kim

Inha University

David A. Tucker

NETL

GAS & STEAM TURBINES

Organizers MONARCHY 4

Bogdan Epureanu,

University of Michigan,

USA

Roberto Pacciani

University of Florence



33

F5/9-1

TU

ES

DA

Y

Mechanical and aerodynamic phenomena in turbomachinery - Chair: Tong Seop Kim

8:00a – 8:40a B. Epureanu

Keynote

Damping Mistuning Effects on The

Amplification Factor and Statistical

Investigation of Vane Packet

8:40a – 9:00a T. Aufderheide, U. Stark, P.

Frantzheld, J. Friedrichs

Experimental and numerical

investigations of a linear turbine cascade

with sweep and dihedral

9:00a – 9:20a T. G. Vincent, J. A. Schetz,

K. T. Lowe

Analysis of the Unsteady Behavior of

Total Temperature Probes including

Conduction, Convection and Radiation

for Probe Design Studies

9:20a – 9:40a G-M. Kim, J-U. Choi, J. S.

Kwak

Effects of DBD Plasma Actuator and

Coanda Effect Applied to Curved

Surfaces on the Film Cooling

Effectiveness

9:40a – 10:00a S. Baek, W. Tang, B.

Epureanu

Reduced Order Modeling of Bladed Disks

for Contact Stiffness Identification

F5/9-2

TU

ES

DA

Y

Gas turbine system - Chair: Dave Tucker

2:00p – 2:20p K. Suzuki, S. Nakano, K.

Seki, Y. Takeda, T. Kishibe

Effects of Water Injection on Generator

Output Power Augmentation in a

Microturbine

2:20p – 2:40p M-J. Kim, J-H. Kim, T-S.

Kim

Dynamic Behavior Analysis of a Micro

Gas Turbine due to Internal Leakage

2:40p – 3:00p D. Tucker, L. Shadle, N. F.

Harun

Automated compressor surge recovery

with cold air bypass in gas turbine based

hybrid systems

3:00p – 3:20p J. Kowalski, M. Lauer, D.

Engelmann, R. Mailach, M.

Cagna

Development of a Novel Test Rig to

Investigate Explosion Safety in Gas

Turbine Enclosures

3:20p – 3:40p J. Chen, J. Li, H. Zhang Study on the Influence of Nonlinear

Characteristics of Fuel System on the

Control Strategy of Gas Turbine Engine

3:40p – 4:00p M. Kerler, C. Schäffer, W.

Erhard, V. Gümmer

Experimental Investigation of an Engine

Quick-Start System with Compact Air

Supply for Rotorcraft Application


34

F5/9-3

WE

DN

ES

DA

Y

Turbomachinery components and systems - Chair: Roberto Pacciano

8:00a – 8:20a J. P. Gostelow, A. Rona Mid-Span Losses in Turbine Blades at

Subsonic and Supersonic Speeds

8:20a – 8:40a D. Toebben, P. Luczynski,

M. Wirsum, W. Mohr, K.

Helbig

Optimized Approach for the Determination

of the Solid Temperature in a Steam

Turbine in Warm-Keeping-Operation

8:40a – 9:00a Omer Hodzic, Senad Iseni,

David Engelmann, Ronald

Mailach,

Design of a low pressure turbine stage with

control stage characteristics for

investigations of partial admission effects

9:00a – 9:20a Lei Huang, Hua Chen A novel design method of variable

geometry turbine nozzles for high

expansion ratio

9:20a – 9:40a Alexander Esper, Christian

Lenzen, Manfred Wirsum

Commissioning of a Test Stand for

Turbocharger Investigations at Constant

Turbine Inlet Temperatures

9:40a – 10:00a T. S. Mueller, H. Hennings,

D. Giesecke, J. Friedrichs

Thermodynamic and Rotordynamic

Assessment of Conventional and Ultra-

High Bypass Ratio Engines


35

F6/7/8

F6/7/8

MO

ND

AY

Chair: Garth Hobson

8:00a – 8:20a D. Toebben, X. E. R. de

Graaf, P. Luczynski, M.

Wirsum, W. Mohr, K.

Helbig,

Test Rig for Applied Experimental

Investigations of the Thermal Contact

Resistance at the Blade-Rotor-Connection

in a Steam Turbine

8:20a – 8:40a S. Aberle M. Bitter, F.

Hoefler, J. Carretero

Benignos, R. Niehuis

Implementation of an In-situ Infrared

Calibration Method for Precise Heat

Transfer Measurements on a Linear

Cascade

8:40a – 9:00a B. Savic, R. Baar Turbocharger Heat Transfer Modelling

with a Powerbased Phenomenological

Approach and a CFD-CHT Validation

9:00a – 9:20a T. Glasenapp, M. Fraas, A.

Schulz, H-J. Bauer

A New Test Rig for the Investigation of

Film Cooling on Rough Surfaces

9:20a – 9:40a R. Pearce, M. McGilvray Investigation into Simulation Methods for

Comparisons of RANS CFD to Transient

Liquid Crystal Experiments

9:40a – 10:00a M-T. Scharl, D. Greenhalgh,

A. Dieguez-Alonso, F.

Behrendt

Numerical and experimental studies of

laminar counter-flow diffusion flames

using low enthalpy fuels

HEAT TRANSFERS, INTERNAL

COOLING & COMBUSTION MONARCHY 1


36

F10

Keynote speech Some Modelling Development for Unsteady Flows in Axial

Compressors

Abstract: In compressors, there exist various complex unsteady flow

structures with 5 to 6 orders of magnitudes variations in length scale.

Turbulence, rotor-stator interaction and rotating stall are typical flows for

"small scale", "medium scale" and "large scale" flow phenomena, respectively.

RANS method is still in high demand for engineering applications. And

modelling errors are the main sources for the compressor CFD. In this

presentation, emphasis is placed on some modelling development for the above

three typical unsteady flows that are compatible with the industrial design

environment. The developed models could offer the potential of providing fast

and credible results. For turbulence modelling, a new method for modifying

turbulence models using helicity to consider the energy backscatter in vortical

flows is proposed. The SA model and the SST model are modified. By

comparing the numerical results with experiments, it can be concluded that the

modification for SA and SST model with helicity can greatly improves the

predictive accuracy for simulating the corner separation flow. For unsteady

rotor-stator interaction, an exponential decay deterministic correlations (DC)

model using meridional distance between blade rows as characteristic length is

proposed to close the average-passage equation system proposed by

Adamczyk. Based on the unsteady simulation, the proposed model is validated

by comparing DC distributions and mean flow fields. The comparison

indicates that the proposed model can take into account the major part of rotor-

stator interaction and provide significant improvements for predicting

spanwise distributions of flow properties in axial compressors, compared with

the steady mixing plane method. For rotating stall, a computational model for

axial compressor stall inception and its nonlinear evolution using unsteady

RANS method as an initial boundary value problem. The initial disturbance

with the most unstable mode is obtained by a stall inception eigenvalue

approach. Several unsteady inlet boundary conditions with different

frequencies are used as initial perturbations for full-annulus unsteady

simulations of a transonic compressor rotor flow. Based on comparison and

analysis for different simulation examples, the present computational model

provides a fast and reliable route to implement nonlinear simulation of

compressor rotating stall.

COMPRESSORS

Xavier Carbonneau

ISAE

Kwang-Yong Kim

Inha University

Organizers

MONARCHY 5

Yangwei Liu,

Beihang University,

China


37

Yangwei Liu is an associate professor in the School of Energy and Power Engineering at Beihang

University (BUAA) since 2012. He is also Editorial Committee Youth Member of "Chinese Journal of

Aeronautics" and "Acta Aeronautica et Astronautica Sinica". He was a visiting scholar in the Department of

Engineering at the University of Cambridge from November 2016 to October 2017. He was also a visiting

scholar in LMFA at Ecole Centrale de Lyon from November 2010 to February 2011. He received his Ph.D.

degree in Fluid Machinery and Engineering from BUAA in 2009 and B.S. degree in Flight Vehicle

Propulsion Engineering from BUAA in 2003. He focuses on CFD, turbulence and turbulence modeling,

rotor-stator interaction, rotating stall, flow control in compressors. He proposed a new method to modify SA

model using helicity to consider turbulence energy backscatter in 3D vortical flows. The modified SA model

(SA-Helicity) could significantly improve predicting performance and has been implemented into several

CFD codes, including the fastest CFD code Turbostream which is heavily based on the long line of codes

from Prof. John Denton. He has won 9 invention patents, and published more than 70 peer-reviewed papers

in journals and conferences. He was awarded the Beijing Higher Education Young Elite Teacher Project in

2013. He has been awarded a number of projects, including 3 projects from the National Natural Science

Foundation of China, 2 projects form the Aeronautical Science Foundation of China, and 2 projects form the

National Science Foundation for Post-doctoral Scientists of China.

F10

WE

DN

ES

DA

Y

Chair: Hua Chen

2:00p – 2:40p Y. Liu

Keynote

Some Modelling Development for

Unsteady Flows in Axial Compressors

2:40p – 3:00p A. Kellersmann, G. Reitz, J.

Friedrichs,

Sensitivity analysis of BLISK airfoil wear

3:00p – 3:20p G. Reitz, J. Friedrichs Impact of Front- and Rear Stage High

Pressure Compressor Deterioration on Jet

Engine Performance

3:20p – 3:40p D. Japikse Novel Flow-wise Grooves in Radial

Turbomachines

3:40p – 4:00p D. Japikse, S. E. Wight Harmonic Analysis of Diffuser Inlet

Static Pressure Distortion for Centrifugal

Stages


38

F13

Keynote speech Flow instability in the draft tube of a radial turbine

under steady and pulsating flow conditions

Abstract: Turbine exit flow behavior is subjected to the

operation flow rate. Specifically, strong vortices can be observed

at low flow and high flow rate. This vortex type is known as the

vortex rope and it often induces forced vibration and self-excited

vibration problem. Therefore, this complex flow field has to be

clarified to understand the flow instabilities. CFD is effective to

predict the pressure distribution on a wall but only a detailed

computation result like LES has good agreement with the

experimental result. Furthermore, we clarified that the vortex

behavior under steady and pulsating flow condition was different

using radial turbine internal flow investigation. By comparison of

these flow characteristics, we could understand the formation

mechanism of vortex rope under unsteady flow conditions. In this

speech, these computational and experimental results under

steady and unsteady condition will be shown.

Kazuyoshi Miyagawa is working as a professor at Department of Applied Mechanics and Aerospace

Engineering of WASEDA University, Tokyo, Japan. He received his B.S. and M.S. degrees from WASEDA

University in 1983 and 1985 respectively, and Dr.Eng. from Osaka University, Japan, in 2007. He is

interested in research and development of turbomachinery such as hydro turbine, pump, compressor based

on understanding of internal flow using CFD and experimental results.

HYDRAULIC MACHINERY

Shuhong Liu

Tsinghua University

Eduard Doujak

TU Wien

Organizers

Kazuyoshi Miyagawa

Waseda University, Japan

MONARCHY 3


39

F13-1

WE

DN

ES

DA

Y

Chair: Ahmed. Kovacevic

8:00a – 8:40a K. Miyagawa

Keynote

Flow Instability and Fluid Exciting

Force in Turbomachinery

8:40a – 9:00a M. P. Kinzel, R. F. Kunz, J.

W. Lindau

An Assessment of CFD Cavitation

Models Using Bubble Growth Theory and

Bubble Transport Modeling

9:00a – 9:20a Y. Zhao, W. Liao, S. Zhou,

H. Ruan, X. Luo Analysis of Bidirectional Fluid-Solid

Coupling for Bulb Turbine with

considering Gravity effect and Non-

Uniform inflow

9:20a – 9:40a A. Yu, L. Zhang, Y. Li, X.

Luo, L. Wang, W. Yu

Investigation of vortex flow features in a

Francis turbine draft tube using a new

cavitating turbulent flow simulation

method

9:40a – 10:00a L. Wang, W. Liao, J. Lu, H.

Ruan, Y. Zhao, Y. Fan

Study on vortex rope and pressure

fluctuation of draft tube in pump turbine

at part load condition

F13-2

WE

DN

ES

DA

Y

Chair: Xianwu Luo

2:00p – 2:20p D. Valentini, G. Pace, A.

Pasini, R. Hadavandi, L.

d’Agostino

Experimental Characterization of

Unsteady Forces Triggered by Cavitation

on a Centrifugal Pump

2:20p – 2:40p A. Kovacevic, S. Rane, Y.

Di, Q. Tang

Numerical analysis of Twin-Screw Pumps

2:40p – 3:00p H. Kang, J. Hur, H. Lee Prediction of Hydrodynamic Propeller

Loads for Strength Evaluation using CFD

3:00p – 3:20p H. Wang, Q. Zgang, L. Zhu Engineering, Design, Analysis and

Testing of Helium Circulator used in

HTR-PM

3:20p – 3:40p K. Onishi, K. Matsuda, K.

Miyagawa Influence of Hydrophilic and

Hydrophobic Coating on Hydrofoil

Performance

3:40p – 4:00p G. Lu, Z. Zuo, S. Liu A local unsteady loss analysis of flows in

a low specific speed model pump-turbine

in pump mode


40

F14

Keynote speech Experimental investigation on cavitating flow induced

vibration characteristics of a low specific speed centrifugal

pump

Abstract: Cavitation, one of the unexpected flow instabilities inside

centrifugal pumps, is detrimental to the stable operation of centrifugal

pumps. With absolute static pressure at the impeller suction

decreasing, cavitation may easily occur at the blade leading edge.

Furthermore, with static pressure decreasing continuously, cavitation

region inside blade channels expands towards the blade trailing edge,

and cavitation bubbles travel with the main flow collapsing at high

static pressure region. During the collapsing process, unsteady impact

forces acting on the blade surfaces and shock waves would be

generated resulting in vibration energy of the pump increasing rapidly.

Besides, due to the continuously impingement effect of the burst

cavitation bubbles, cavitation erosion would develop on the blade

surfaces. So it is essential to detect cavitation during pump operating

to avoid the unexpected effects. In the present study, visualization of

cavitating flow and the corresponding induced vibration characteristics

are combined to investigate the influence of cavitating flow on

vibration energy of the model pump. Emphasis is laid upon the low

frequency signals. The present paper attempts to illustrate the

influence of cavitation on the entire frequency band signals. Besides,

the correlation between cavitation evolution and vibration energy

characteristics would also be clarified. Finally, a comprehensive

understanding of cavitation induced vibration would be carried out to

establish an effectively way to detect cavitation in centrifugal pumps.

Ning Zhang received his Ph.D degree from Jiangsu University in 2016. Now he works at the Department of

Fluid Machinery and Engineering in Jiangsu University. His research interests include the unsteady flow in

centrifugal pumps, laser-based internal flow field measurements, cavitation, pump noise and vibration. Now he

is working on rotor-stator interaction phenomenon, cavitation induced vibration and the complex flow structure

measurements in centrifugal pumps.

CENTRIFUGAL PUMPS

Bo Gao

Jiangsu University

Organizer

Ning Zhang

Jiangsu University, China

MONARCHY 5


41

F14

MO

ND

AY

Chair: Martin Böhle

2:00p – 2:40p N. Zhang

Keynote

Experimental investigation on cavitating

flow induced vibration characteristics of a

low specific speed centrifugal pump

2:40p – 3:00p B. Hu, D. Brillert, H. J.

Dohmen, F-K. Benra

Investigation on the axial thrust and

moment coefficient of a centrifugal

turbomachine

3:00p – 3:20p A. Knapp, M. Böhle Investigation of different design methods

of volutes with circular cross sections for

a single-stage centrifugal pump

3:20p – 3:40p S. Xu, S. Zhong, X. Peng, H.

Zhao

Optimization of Pump Hydraulic

Performance Based on Response Surface

Method

3:40p – 4:00p J-H. Kim, Y-J. Kim Effect of the volute tongue geometry on

the performance of a spurt pump


42

F15

Keynote speech Novel Diagnostic Techniques for Identification of

Inducer Cavitation Dynamics

Abstract: The cavitation dynamics of a rocket engine

turbopump inducer was characterized via high-response

unsteady pressure and velocity measurements combined with

front- and side-view optical imaging. The data was processed

using Traveling Wave Energy (TWE) analysis to determine the

temporal evolution of frequency, spatial shape, and direction

of rotation of the natural oscillatory modes of the flow field

during cavitation transients. The test inducer, dubbed the MIT

inducer, is representative of a low-pressure liquid oxygen

pump (LPOP) inducer of modern design. All experiments were

conducted in the Aerospace Corporation’s Cavitation Test

Facility. The paper will also discuss a new approach to

measuring fluctuating mass flow and velocity for potential use

in forced response identification of the inducer transfer matrix

relevant for POGO instability assessment. Previous work on

the mechanism responsible for rotating cavitation suggests that

rotating cavitation is caused by coupling of the cavities on

adjacent blades during alternate blade cavitation. Due to the

nearly tangential flow, the vortex lines from one of the non-

cavitating blades wrap around the blade leading edge of the

adjacent blade, which yields a drop in static pressure and

cavity formation. The tip vortex interaction with the leading

edge of the next blade leads to sheet cavity breakdown with

periodic cavity growth and collapse. This creates the apparent

super-synchronous rotation of the cavities. The measurements

presented in this paper support these hypotheses.

Zoltan Spakovszky is Professor of

Aeronautics and Astronautics at the

Massachusetts Institute of Technology and the

director of the Gas Turbine Laboratory. He

obtained his Dipl. Ing. degree in Mechanical

Engineering from the Swiss Federal Institute of

Technology (ETH) Zürich and his MS and

Ph.D. degrees in Aeronautics and Astronautics

from MIT. Dr. Spakovszky’s principal fields of

LIQUID ROCKET ENGINE INDUCERS

AND PUMPS: DESIGN, TESTING,

FLOW INSTABILITIES

Angelo Cervone

Delft University of

Technology

Angelo Pasini University of Pisa

Organizers

MONARCHY 5

Zoltan Spakovszky

MIT, USA


43

interest include internal flows in turbomachinery, compressor aerodynamics and stability, dynamic system

modeling of aircraft gas turbine engines, micro-scale gas bearing dynamics, and aero-acoustics. He currently

directs analytical and experimental research in these areas and teaches graduate and undergraduate courses in

thermodynamics, propulsion and fluid mechanics, and aero-acoustics. He has authored a large number of

technical papers in refereed journals and has been awarded several ASME International Gas Turbine Institute best

paper awards, the ASME Melville Medal, the ASME Gas Turbine Award, a NASA Honor Award, several Aero-

Astro Undergraduate Advising / Teaching Awards, and the Ruth and Joel Spira Award for Excellence in

Teaching. Dr. Spakovszky is a technical consultant to industry and government agencies, a Fellow of the ASME,

an Associate Fellow of the AIAA, and served as the chair of the turbomachinery committee and review chair of

the ASME International Gas Turbine Institute, and as an associate editor for the ASME Journal of

Turbomachinery.

F15-1

SU

ND

AY

Chair: Angelo Pasini

2:00p – 2:40p Z. Spakovszky, V. Wang, O.

Jia-Richards, D. Jackson

Keynote

Novel Diagnostic Techniques for

Identification of Inducer Cavitation

Dynamics

2:40p – 3:00p B. Gwiasda, M. Mohr, M.

Böhle

Investigations of different blade angle

distributions for axial and mixed flow

inducer operating with high rotational

speed

3:00p – 3:20p L. Veggi, J. D. Pauw, B.

Wagner, O. J. Haidn

A Study on the Design of LOX

Turbopump Inducers

3:20p – 3:40p J. D. Pauw, L. Veggi, B.

Wagner, O. J. Haidn

Design procedures of a turbo pump test

bench

3:40p – 4:00p B. Wagner, L. Veggi, J. D.

Pauw

Assessment of performance variation on

the axial and radial forces in turbopump

configurations for liquid rocket engines

F15-2

MO

ND

AY

Chair: Angelo Pasini

8:00a – 8:20a H. Chen, N. Doeller, Y. Li,

J. Katz

Stereoscopic PIV Measurements of the

Flow along the Blade Pressure Side of an

Axial Waterjet Pump during Cavitation

Breakdown

8:20a – 8:40a J. Kim, J. Shin, S-J. Song Measurement of Effects of Inlet Flow

Distortion on Cavitation in a Turbopump

Inducer

8:40a – 9:00a G. Pace, D. Valentini, A.

Pasini, R. Hadavandi, L.

d’Agostino

Analysis of Flow Instabilities on a Three-

Bladed Axial Inducer in Fixed and

Rotating Frame

9:00a – 9:20a A. Pasini, R. Hadavandi, D.

Valentini, G. Pace, L.

d’Agostino,

Dynamics of the Blade Channel of an

Inducer under Cavitation-Induced

Instabilities

9:20a – 9:40a I. Khlifa, V. Bouillaut, O.

Coutier-Delgosha

Analysis of the instabilities in rocket

engine inducers

9:40p – 10:00a D. E. Jackson, J. A.

Schwille, J. M. Gariffo, Z.

Spakovszky

Calculation of Cavitation Surge

Frequencies in a Liquid Rocket Engine

Inducer


44

F11

F11

TU

ES

DA

Y

Chair: Masato Furukawa

8:00a – 8:20a H. Hamakawa, M. Furuno,

M. Shibata, E. Kurihara

Relation between Broadband Noise and

Vortex Shedding from Trailing Edge of

Rotor Blade of Axial Flow Fan

8:20a – 8:40a M. Nudischer, H. Binz, M.

Bachmann, S. Recker

Experimental investigation of two

centrifugal fans in a serial arrangement

8:40a – 9:00a S. Itou, N. Oka, M.

Furukawa, K. Yamada, S.

Ibaraki, K. Iwakiri, Y.

Hayashi

Optimum Aerodynamic Design of

Centrifugal Compressor using a Genetic

Algorithm and an Inverse Method based

on Meridional Viscous Flow Analysis

9:00a – 9:20a N. G. Sohoni, C. A. Hall, A.

B. Parry

The influence of an upstream pylon on

open rotor aerodynamics at angle of

attack

9:20a – 9:40a S. Sasaki, H. Hidaka Experimental Study on Relative Flow

Regime and Broadband Noise of a

Propeller Fan

9:40a – 10:00a T. Shigemitsu, K. Hirosawa,

H. Fukuda

Performance and Internal Flow of Contra-

Rotating Small-Sized Cooling Fan

Florent Ravelet

Arts et Metiers ParisTech

Toru Shigemitsu

Tokushima University

Organizers

FANS & BLOWERS

MONARCHY 1


45

F16/18

F16/18

MO

ND

AY

Chair: Matevz Dular

8:00a – 8:20a Cancelled

8:20a – 8:40a A. Charrier, S. Fuzier, O.

Coutier-Delgosha

Study of temperature evolution of small

cavitation bubbles in liquid nitrogen

8:40a – 9:00a M. Dular, M. Petkovsek Cavitation erosion in liquid nitrogen

9:00a – 9:20a J. Wang, Y. Wang, M. Dular Experimental study on cavitating flow in

an axisymmetric system

9:20a – 9:40a M. Hočevar, T. Cencič, A.

Podnar, B. Širok

Study of cavitation erosion in pump mode

of pump storage hydro power plant

prototype

9:40a – 10:00a J. Lu, X. Zhang, J. Zhang, J.

Feng, X. Luo

A Experimental Research On The Anti-

erosion Material For Hydraulic

Machinery

CAVITATION BUBBLES

& EROSION

Matevz Dular

University of

Ljubljana

Jian Wang

Taizhou University

Organizers

MAUI SUITE 1-2

Mohamed Farhat

EPFL


46

F17/19

Keynote speech Microbubble generation and measurement in

hydrodynamic test facilities

Abstract: Various techniques for the generation, measurement and dispersion of microbubbles for modelling of cavitation nucleation and dynamics in hydrodynamics test facilities are presented. Controlled generation of microbubbles is required for development and calibration of optical measurement techniques, for flow diagnostics as well as to control nucleation and cavitation inception in experiments. Several techniques for generation of mono-, and poly-disperse microbubble populations in the size range 1 to 100 microns are discussed. Microbubble concentrations generated by devices or from cavitation itself vary from 1000 bubbles per cubic cm down to 0.01, in addition to the size range, necessitating the use of several methods for measurement of both size range and concentration. Methods for dispersing these in small and large scale test flows is also presented

Paul Brandner is Researcher Leader in the Cavitation Research Laboratory, Australian Maritime College,

University of Tasmania.

SHEET & CLOUD CAVITATION:

EXPERIMENTS AND CFD

Paul Brandner

University of Tasmania

Bryce Pearce

University of Tasmania

Organizers

MONARCHY 5

Satoshi Watanabe Kyushu University

Frank Visser

Flowserve Motohiko Nohmi

EBARA corporation

Bart van Esch

Eindhoven Univ.

of Technology

Paul Brandner

University of Tasmania, Australia


47

F17/19-1

TU

ES

DA

Y

Chair: Satoshi Watanabe

8:00a – 8:40a P. Brandner

Keynote

Microbubble generation and measurement

in hydrodynamic test facilities

8:40a – 9:00a M. P. Kinzel, R. F. Kunz, J.

W. Lindau

An Assessment of CFD Cavitation

Models Using Bubble Growth Theory and

Bubble Transport Modeling

9:00a – 9:20a A. Le Dinh, I. Yuka Simplified Modeling of Cavitating Flow

with Thermodynamic Effect for

Homogeneous Model

9:20a – 9:40a J. Kozák, P. Rudolf, M.

Hudec, M. Forman

Numerical and experimental investigation

of the cavitating flow within Venturi tube

9:40a – 10:00a W. Tsuru, S. Tsuda, S.

Watanabe

Effect of Bubble Nuclei Characteristics

on a Cavitating Hydrofoil: Numerical

Investigation with Homogeneous

Cavitation Model

F17/19-2

TU

ES

DA

Y

Chair: Paul Brandner

2:00p – 2:20p S. Smith, J. Venning, D.

Giosio, P. Brandner, B.

Pearce, Y-L. Young

Cloud cavitation behaviour on a hydrofoil

due to fluid-structure interaction

2:20p – 2:40p C. Harwood, Y. L. Young,

M. Felli, M. Falchi, S.

Ceccio

Scaling of Natural Ventilation and

Vaporous Cavitation on a Surface-

Piercing Hydrofoil

2:40p – 3:00p K. Long, M. Dular, O.

Coutier-Delgosha

Cavitation dynamics at sub-millimeter

scale

3:00p – 3:20p J. Venning, S. Smith, P.

Brandner, D. Giosio, B.

Pearce

The influence of nuclei content on cloud

cavitation about a hydrofoil

3:20p – 3:40p Yiwei Wang, J. Huang, X.

Chen, C. Huang

Re-entry jet and Shock induced cavity

shedding in cloud cavitating flow around

an axisymmetric projectile

3:40p – 4:00p Y. Oodaira, W. Tsuru, S.

Watanabe, Y. Iga

A fundamental study of disappearance

phenomenon of partial cavitation on the

NACA16012 hydrofoil


48

F20

Keynote speech Seakeeping - A Macroscopic View of Fluid-Structure Interaction

Abstract: Seakeeping is the term used to describe the performance of

ships in a seaway. However, it is usually thought of as a process involving

small perturbations about an "ordered" mean speed and "ordered"

heading. In extreme seas, there can be a significant decrease in the mean

speed relative to the "ordered" speed and the ship's heading will vary

significantly from the ordered heading, and in some cases, the ship's mean

heading will not even be close to the "ordered" heading. This

hydrodynamic problem is better characterized as the maneuvering in

waves hydrodynamics problem rather than as the traditional seakeeping

hydrodynamics problem. Statistically, one can characterize ship responses

as composed of non-rare events and rare events. However, one must keep

in mind that both rare and non-rare events are stochastic - the responses of

a vessel to random excitation. As such, one is generally dealing with zero

mean processes, where one wishes to characterize the magnitude of the

responses, including a measure of the confidence bands of these

magnitudes. This requires the use of statistical methods outside of the

usual mean and standard deviation normally considered by scientists and

engineers. For ship responses to wave excitation, the usual metric used to

characterize the non-rare responses is the single significant amplitude of

the motions. That is twice the usual standard deviation of the motions and

the confidence bands are calculated based on the variance of the variance.

FLUID-STRCTURE INTERACTIONS

OF PROPULSORS, TURBINES, AND

LIFTING SURFACES

Julie Young University of

Michigan

Patrick Bot

Ecole Navale

Organizers

Ki-Han Kim Office of Naval Research

Woei-Min Lin

ONR Global

MONARCHY 3

Arthur M. Reed, David Taylor

Model Basin (NSWCCD)

Jacques-André

Astolfi

Ecole Navale


49

Arthur M. Reed is the Senior Scientist/Technical Consultant for High-Speed Ship Hydrodynamics in the Naval

Architecture and Engineering Department at the David Taylor Model Basin (NSWCCD), the U.S. Navy's principle

laboratory for the science and engineering of ships and submarines. His research focuses on advancing the

fundamental understanding of the hydrodynamics of ships. He has performed research on the resistance and

propulsion of small water-plane area twin-hull (SWATH) ships, propeller design, seakeeping, maneuvering in

waves and hull-form optimization. Dr. Reed is a Fellow of the Society of Naval Architecture and Marine

Engineering (SNAME), for which he is the Chairman of the Analytical Ship-Wave Relations (H-5) Panel; a

member (1 of 4) of the Georg Weinblum Memorial Lecture Organizing Committee (an annual lecture on ship

hydrodynamics given in both the US and Germany); a member of the Papers Committee; and the lead author for

two of the volumes of Principles of Naval Architecture (Fundamentals: Hydrodynamics, Rigid-Body Dynamics and

Random Processes, and Motions in Waves). Dr. Reed is serving in his fifth, three-year term on the International

Towing Tank Conference, four terms as a member and then chairman of the Stability in Waves Committee, and is

currently a member of the Quality Systems Group. Dr. Reed has written over one hundred journal and, conference

papers, and technical reports in the area of ship hydrodynamics. Three of his conference papers have won SNAME's

annual Linnard Prize for best paper. He has acted as a technical consultant to numerous government agencies

including DARPA, NAVSEA, ONR, OUSD (AT&L) and DoJ.

F20-1

SU

ND

AY

Chair: Julie Young

10:00a – 10:40a A. M. Reed

Keynote

Seakeeping - A Macroscopic View of

Fluid-Structure Interaction

10:40a – 11:00a S. Fitzpatrick, R. Gouveia, A.

Costa, D. Kring

Time-Domain Simulation of Lifting

Bodies Acting at or near the Free Surface

with Vortex Particle Wakes

11:00a – 11:20a S. Anantharamu, K. Mahesh Numerical simulation of time domain

response of an elastic surface subjected to

turbulent boundary layer wall-pressure

fluctuations

11:20a – 11:40a S. Brizzolara Ventilation Inception and Growth of

Surface-Piercing Super-Cavitating

Hydrofoils

11:40a – 12:00p J-A. Astolfi, P. Guiffant, P.

Bot

Experimental evidence of the frequency

locking of a flexible hydrofoil near stall

condition

F20-2

SU

ND

AY

Chair: Patrick Bot

2:00p – 2:20p C. Martel, R. Corral, O.

Khemiri

Design of mistuning patterns to control the

vibration amplitude of unstable rotor blades

2:20p – 2:40p S. Zeyghami, K. W. Moored Effect of non-uniform flexibility on

hydrodynamic performance of pitching

propulsors

2:40p – 3:00p T. Van Buren, D. Floryan, R.

Zhu, H. Bart-Smith, A. J. Smits

Unsteady propulsion using flexible flapping

foils

3:00p – 3:20p Y. L. Young, N. Garg, P. A.

Brandner, B. W. Pearce, D.

Butler, D. Clarke, A. Phillips

Bend-Twist Coupling Effects on the

Vibration Characteristics and Cavitating

Response of Composite Hydrofoils

3:20p – 3:40p L. Li, L. Mu, C. Liang, J.

Wang

A Weak Galerkin Finite Element Method

for Parallel Solutions of Linear Elasticity

on Unstructured Meshes

3:40p – 4:00p A. Boudis, AC. Bayeul-Lainé,

A. Benzaoui, H. Oualli, O.

Guerri, O. Coutier-Delgosha

Numerical investigation of the effect of

motion trajectory on the vortex shedding

process behind a flapping airfoil


50

F21

Keynote speech Vibration Analysis of an Axial Turbine Blisk with Optimized

Intentional Mistuning Pattern

Abstract: Aiming to limit the forced response of an axial turbine blisk

for ship Diesel engine applications efforts have been made to increase

the aerodynamic damping contribution for the most critical modes. In

this regard the potential of intentional mistuning is investigated since it

offers the opportunity to ensure a safe operation without a severe loss

of aerodynamic performance. Genetic algorithms have been chosen to

derive an optimized mistuning pattern. In order to keep the

manufacturing effort within a limit only two possible blade geometries

are allowed which means that an integer optimization problem has

been formulated. For the purpose of demonstrating the benefit of the

intentional mistuning pattern found, two blisk prototypes have been

manufactured: One with and another one without employing

intentional mistuning for purposes of comparison. Furthermore, this

offers the opportunity for an experimental determination of mistuning

being really manufactured and other modal properties as well. The

experimental data basis is employed to update structural models which

are well suited to demonstrate the forced response reduction under

operational conditions.

Bernd Beirow is working as lecturer and research associate in the group of Professor Arnold Kuehhorn at the

chair of structural mechanics and vehicle vibrational technology at the Brandenburg University of Technology

located in Cottbus (Germany) since 17 years. He received both his PhD and habilitation from the same

university. His research interest lies in the field blisk and blade vibration analyses of compressor and turbine

wheels with a focus on mistuning employing both experimental and numerical methods. During his

employment at BTU Cottbus he published more than 70 journal and conference papers, most of them related to

the field structural vibration. Furthermore, he participated in three patents dedicated to the field mistuning.

Moreover Dr. Beirow is supporting the community as reviewer of numerous technical journals and conferences

as well.

Marcus Meyer Rolls-Royce Deutschland

Organizer

MONARCHY 4

DESIGN & OPTIMIZATION

Bernd Beirow, Brandenburg

University of Technology



51

F21

WE

DN

ES

DA

Y

Chair: Marcus Meyer

2:00p – 2:40p B. Beirow, F. Figaschewsky,

A. Kühhorn, A. Bornhorn

Keynote

Vibration Analysis of an Axial Turbine

Blisk with Optimized Intentional

Mistuning Pattern

2:40p – 3:00p D. Giesecke, R. Harms

Garcia, J. Friedrichs, U.

Stark

Design and Optimization of Compressor

Airfoils by Using Class-Function / Shape-

Function Methodology

3:00p – 3:20p I. Vasilopoulos, P.

Mohanamuraly, M. Meyer,

J-D. Müller,

Adjoint-driven Aerodynamic

Optimization of a Compressor Stator

using CAD-based and CAD-free

Parameterizations

3:20p – 3:40p A. Ning Large-Scale Wind Farm Optimization and

Uncertainty Quantification

3:40p – 4:00p M. Hendler, D. Bestle, P.

Flassig

Component-specific Engine Design

Taking into Account Holistic Design

Aspects


52

F24

F24

WE

DN

ES

DA

Y

Chair: Xuerui Mao

8:00a – 8:30a I. Ahmed, M. Teich, M.

Lawerenz

3D RANS Simulation of NREL Phase-VI

and MEXICO Wind Turbines

8:30a – 9:00a A. Wang, X. Mao Wind resource assessment on rough

terrains using Large Eddy Simulation

9:00a – 9:30a S. Le Clainche, X. Mao, J.

M. Vega

Spatio-temporal Koopman

Decomposition in cross-flow wind

turbines

Xuerui Mao

Durham University

Tongguang Wang

Nanjing University of

Aeronautics and Astronautics

(NUAA)

WIND TURBINES AND WIND FARMS

Organizers

MONARCHY 5


53

F26/30

F26/30

MO

ND

AY

Chairs: Yosuke Hasegawa & Jay Lindau

2:00p – 2:20p M. Shimura, S. Uranai, H.

Mamori, N. Fukushima, M.

Yamamoto

Effect of SLD characteristics phenomena

on icing on axial fan blade

2:20p – 2:40p X. Meng, Z. Zuo, S. Liu, M.

Nishi

Numerical comparison between the flow

with transitory stalls in a two-dimensional

diffuser with and without a splitter vane

2:40p – 3:00p Y. Fukuda, Y. Kametani, Y.

Hasegawa

Direct numerical simulation of heat and

fluid flow around pin fin arrays and its

experimental validation

3:00p – 3:20p Y. Ma, J. Cui, N. Rao

Vadlamani, P. Tucker

Effect of fan on inlet distortion: a mixed

fidelity approach

3:20p – 3:40p J. Cui, Y. Ma, C. Mantell, P.

Tucker

Multi-fidelity simulation for a transonic

compressor with inflow distortions

3:40p – 4:00p A. Fuchs, O. J. Haidn Effects of uncertainty and quasi-chaotic

geometry on the leakage of brush seals

Tamer Zaki

Johns Hopkins University

Yosuke Hasegawa

University of Tokyo

SIMULATIONS AND V&V APPLIED

TO TURBOMACHINERY

Organizers

MONARCHY 4

Jay Lindau

Penn State

Michael Kinzel

Penn State


54

F27

Keynote speech

Numerical Simulation of the Rotating Instability in an Annular

Compressor Cascade Test Rigs

Abstract: The main topic of this study is the Rotating Instability (RI), which

is investigated numerically. The RI is a self-induced rotating flow instability,

which occurs at high blade loadings at globally stable flow condition prior to

stall with a characteristic pressure signature in the frequency spectra. Former

experimental work by Hermle and Weidenfeller at an annular compressor

stator cascade at the Section of Turbomachinery, University of Kassel, has

shown, that the rotating instability arises for incidences greater i = 12.3°.

There are hints, that the origin is located at the hub near the leading edge, and

can be identified in the frequency spectra of unsteady pressure signals. In

order to investigate the capabilities of Reynolds averaged Navier-Stokes

(RANS) and Detached-Eddy-Simulation (DES) to predict the characteristics

of RI, extensive computation have been performed. The numerical simulations

cover the complete annulus of the cascade and results are compared with

experimental data. Beside the work of van Rennings, the presented

computational results reveal that the development of a rotating flow pattern,

similar to the rotating instability, can be captured with a DES method.

Unsteady pressure signals near the hub at the leading edge are evaluated in the

time and frequency domain and are compared to experimental data. Although

the main characteristics of the rotating instability are captured by the

simulation, there are some differences concerning the quantitative parameters,

which can be related to the applied total pressure profile at the inlet.

Matthias Teich is a mechanical engineer, graduated from University of Kassel in 2013. For his above-average

academic achievements, he received a Junior-Scholarship and the award of „Best overall grade“. Since 2013 he is

a research assistant at the University of Kassel and is just about to complete his doctorate in the section of

turbomachinery at the department of Thermal Power Engineering under the leadership of Univ.-Prof. Dr.-Ing.

Martin Lawerenz. Teich has focused his dissertation on unsteady flow phenomena in a compressor stator cascade

with hybrid numerical methods. The main research-topic is the Rotating Instability (RI), which is a self-induced

flow instability at still stable operating conditions prior to Rotating Stall (RS). With his collegues Teich could

recently show, that little differences at the inlet near the hub have a big impact on the development of rotating flow

pattern, which are connected to the RI. Additionally, he found that the methods used in the simulation (URANS vs. (D)DES) seem to play a major role. He could identify a connection between secondary flow structures on the hub

at the leading edge and the RI. For the exchange of experience and knowledge, Matthias Teich is a member of the

„Verein Deutscher Ingenieure“ (VDI) and the „Deutsche Luft- und Raumfahrt Gesellschaft“ (DLRG).

Kazuyoshi Miyagawa

Waseda University

Young-Do Choi

Mokpo National

University

UNSTEADY FLOW IN

TURBOMACHINERY

Organizers

Xian-Wu Luo

Tsinghua University

MONARCHY 1

Matthias Teich

Kassel University, Germany


55

F27-1

SU

ND

AY

Chair: Kazuyoshi Miyagawa

10:00a – 10:40a M. Teich, M. Lawerenz

Keynote

Numerical Simulation of the Rotating

Instability in an Annular Compressor

Cascade Test Rigs

10:40a – 11:00a T. Shi Development of Rotating Stall with

Hydrofoil Experiment

11:00a – 11:20a P. Guo, B. Gao, N. Zhang,

Z. Li

Flow structures and excitation

characteristics in a staggered flat plate

cascade at different Reynolds numbers

11:20a – 11:40a D. Ni, M. Yang, N. Zhang,

B. Gao, Z. Li

Unsteady flow structures and pressure

pulsations in a nuclear reactor coolant

pump with spherical casing

11:40a – 12:00p M. Yang, N. Zhang, B. Gao,

Z. Li, D. Ni

Unsteady pressure pulsation

measurements and analysis of a low

specific speed centrifugal pump

F27-2

SU

ND

AY

Chair: Xian-Wu Luo

2:00p – 2:20p M. Sinkwitz, B. Winhart, D.

Engelmann, R. Mailach

Experimental and numerical investigation

of secondary flow structures in an annular

LPT cascade under periodically wake

impact – Part 1: experimental results

2:20p – 2:40p B. Winhart, M. Sinkwitz, D.

Engelmann, R. Mailach

Experimental and numerical investigation

of secondary flow structures in an annular

LPT cascade under periodically wake

impact – Part 2: numerical results

2:40p – 3:00p J. Feng, X. Luo Numerical Investigation on Tip Clearance

Effects on Pressure Fluctuations in an

Axial Flow Pump

3:00p – 3:20p R. Huang, X-W. Luo, Z.

Wang, D. Yang

Investigations of the transient flow

features in a waterjet pump system

3:20p – 3:40p Y. Liu, B. Liu, L. Lu An Exponent Decay Model for the

Deterministic Correlations in Axial

Compressors

3:40p – 4:00p


56

F25-28

Keynote speech Transition mechanisms on High Pressure Turbine Vane

midspan sections subject to varying inlet turbulence

Abstract: Heat transfer to the surface of high pressure turbine blades

plays an important role in their design. It has been observed that the

levels of heat transfer depend strongly on the inlet boundary

conditions, specifically the characteristics of the turbulence such as the

turbulence intensity or the length scale. To better understand the

effects that variations of the inlet turbulence states have on the flow

over the blade and consequently the heat transfer, a series of highly

resolved large eddy simulations (LES) has been conducted at realistic

engine operating conditions. The results are compared to previous

experiments and DNS to establish the accuracy of the LES. Then the

boundary layer and heat transfer behaviour is investigated in more

detail for the different inlet characteristics studied.

Richard Sandberg is Chair of Computational Mechanics in the Department of Mechanical Engineering at

the University of Melbourne. His main interest is in high-fidelity simulation of turbulent flows and the

associated noise generation in order to gain physical understanding of flow and noise mechanisms and to

help assess and improve low-order models that can be employed in an industrial context, in particular using

novel machine-learning approaches. He received his PhD in 2004 in Aerospace Engineering at the

University of Arizona and prior to joining the University of Melbourne, he was a Professor of Fluid

Dynamics and Aeroacoustics in the Aerodynamics and Flight Mechanics research group at the University

of Southampton and headed the UK Turbulence Consortium (www.turbulence.ac.uk), coordinating the

work packages for compressible flows and flow visualisations and databases. He was awarded a veski

innovation fellowship in July 2015 entitled: "Impacting Industry by enabling a step-change in simulation

fidelity for flow and noise problems"

Richard Sandberg

University of Melbourne

Stephen Garrett

University of

Leicester

Sharon Stephen

University of

Sydney

Chiara Bernardini

Notre Dame

Rolf Sondergaard

U.S. Air Force

Research Laboratory

Organizers

TRANSITION OF ROTATING

BOUNDARY LAYERS & FLOW

CONTROL MONARCHY 3


57

F25/28-1

TU

ES

DA

Y

Chair: Sharon Stephen

8:00a – 8:40a R. Sandberg, R. Pichler

Keynote

Transition mechanisms on High Pressure

Turbine Vane mid-span sections subject

to varying inlet turbulence

8:40a – 9:00a F-J. Cloos, P. F. Pelz Swirl Boundary Layer at the Inlet of a

Rotating Circular Cone

9:00a – 9:20a R. Miller, P. T. Griffiths, S.

J. Garrett

Model Flows for Chemical Vapor

Deposition: Enforced Axial Flow and

Temperature Dependent Viscosity.

9:20a – 9:40a N. Rao Vadlamani, P. G.

Tucker, P. Durbin

Subsonic boundary layer transition over

rough surfaces: a numerical study

9:40a – 10:00a C. Bode and J. Friedrichs, D.

Frieling, F. Herbst

Improved Turbulence Prediction in

Turbomachinery Flows and The Effect on

Three-Dimensional Boundary Layer

Transition

F25/28-2

TU

ES

DA

Y

Chair: Stephen Garrett

2:00p – 2:20p T. Matsunuma, T. Segawa Effects of Tip Clearance Size on Active

Control of Turbine Tip Clearance Flow

Using Ring-type DBD Plasma Actuators

2:20p – 2:40p A. Thamban, D. Chatterjee Effect of through holes on the

performance of hydrofoils used for

Darrieus type hydrokinetic turbine

2:40p – 3:00p S. O. Stephen Effects of partial slip on rotating-disc

boundary-layer flows

3:00p – 3:20p F. Kern, R. Niehuis Identification and Testing of a Highly

Dynamic Linear Actuation System for

Active Compressor Stabilization

3:20p – 3:40p Y. Tang, Y. Liu, L. Lu, H.

Lu

Experimental Investigation of Flow

Control Using Blade End Slots in a highly

loaded Compressor cascade

3:40p – 4:00p


58

F29

F29

WE

DN

ES

DA

Y

Chair: TBD

2:00p – 2:20p Q. Ji, W. Liao, H. Fan, H.

Yang

Structural characteristic analysis of the

guide vanes of a pump turbine which

working at the slight opening region

2:20p – 2:40p Q. Wu, S. Cao, G. Wang Numerical investigation of cavitating

flow induced noise around a hydrofoil

2:40p – 3:00p B. Barabas, D. Brillert, H. J.

Dohmen, F-K. Benra

The Behavior of the Modal Properties of

Weak and Strong Coupled Acoustic

Modes at Different Pressure Levels in a

Rotor-Stator Test Rig

3:00p – 3:20p P. Łuczyński, D. Erdmann,

D. Toebben, M. Diefenthal,

M. Wirsum, K. Helbig, W.

Mohr

Fast Calculation Methods for the

Modelling of Transient Temperature

Fields in a Steam Turbine during Pre-

Warming Operation

3:20p – 3:40p A. Vega, R. Corral Understanding Labyrinth Seal

Aeromechanic Instabilities by means of

Analytical Models

3:40p – 4:00p S. Xu, X. He, T. Sun, X.

Wang

Research of Damping and Dynamic Stress

for Impeller of Reactor Coolant Pump

Xingxing Huang

Andritz Hydro

Cristian Rodrigez

University of Concepcion

FLUID STRUCTURE INTERACTIONS

Organizers

MONARCHY 2



59

F36

Keynote speech Experimental deposition of NaCl particles from turbulent

flows at gas turbine temperatures

Abstract: The ingestion and deposition of solid particulates within gas

turbine engines has become a very significant concern for both

designers and operators in recent times. Frequently aircraft are

operated in environments where sand, ash, dust, and salt are present,

which can drive damage mechanisms from long term component

degradation to in-flight flame-out. Experiments are presented to assess

deposition characteristics of sodium chloride (NaCl) at gas turbine

secondary air system temperature conditions in horizontal pipe flow.

Mono-disperse NaCl particles were generated in the size range 2.0 -

6.5 mm, with gas temperatures 390-480 ◦ C, and metal temperatures

355-730 ◦ C. Two engine-representative surface roughnesses were

assessed. An experimental technique for the measurement of deposited

NaCl based on solution conductivity was developed and validated.

Experiments were carried out under isothermal and non-

isothermal/thermophoretic conditions. An initial experimental

campaign was conducted under ambient and isothermal conditions;

high temperature isothermal results showed good similarity. Under

thermophoretic conditions deposition rates varied by up to several

orders of magnitude compared to isothermal rates.

Peter Forsyth has recently submitted his PhD thesis on particle deposition within gas turbine engines at the

University of Oxford. Working with Professors Matthew McGilvray and David Gillespie, Peter's work addressed

gas turbine particle deposition both numerically and experimentally, the experimental side of which will be

presented here. He is currently undertaking a postdoc within the same group.

Friedrich-Karl Benra University of Duisburg-Essen

Dieter Brillert University of Duisburg-Essen

MULTIPHASE FLOW IN

TURBOMACHINES

Organizers

MONARCHY 2

Peter Forsyth

University of Oxford, UK




60

F36-1

TU

ES

DA

Y

Chair: Friedrich-Karl Benra

8:00a – 8:40a Peter Forsyth, David

Gillespie, Matthew

McGilvray

Experimental deposition of NaCl particles

from turbulent flows at gas turbine

temperatures

8:40a – 9:05a J. Schütz, F.-K. Benra, I. v.

Deschwanden, H.J. Dohmen,

S. Föllner, D. Brillert,

Numerical investigation of droplet

dispersion in cross-flow applications

9:05a – 9:30a Christoph Günther, Jascha

Bröder, Franz Joos

Influence of pressure on droplet splashing

behaviour inside gas turbine compressors

during wet compression

9:30a – 9:55a Edgar Cando, XianWu Luo,

Esteban Valencia

Liquid-solid steady and unsteady flow

analyses in a Francis turbine using

Eulerian-Lagrangian Modified Partially

Average Navier-Stokes

F36-2

TU

ES

DA

Y

Chair: Dieter Brillert

2:00p – 2:25p Silvio Geist, Niklas Neupert,

Franz Joos

Effect of Moist Droplet-laden Flow on

Transonic Compressor Cascade

Performance

2:25p – 2:50p Michael Breuer, Naser

Almohammed

Turbulent particle-laden and droplet-laden

flows: An advanced eddy-resolving

simulation methodology with

deterministic collision, agglomeration and

coalescence models

2:50p – 3:15p Adrian Seck, Hassan

Gomaa, Bernhard Weigand

New modeling approaches for the

interaction between drops and blades in a

compressor cascade

3:15p – 3:40p Sebastian Schuster, Dieter

Brillert, Uwe Martens,

Viktor Hermes, Friedrich-

Karl Benra

Investigation of the evaporation process

of liquefied natural gas injected in front of

a compressor


61

F32

F32

MO

ND

AY

Chair: Juray de Wilde & Satoru Watano

8:00a – 8:30a S. Watano, H. Takeuchi, H.

Nakamura

Computer Simulation of Dry Impact

Milling Process

8:30a – 9:00a S. Watano, H. Takeuchi, H.

Nakamura

Feedback COntrol of Dry Impact Milling

Process

9:00a – 9:30a V. Verma, S. Benyahia, J.

Weber, R. W. Breault, G.

Richards, T. Li, R. C. Stehle,

J. De Wilde

Intensified gas-solids contact and

separation and solids-solids segregation in

a high-G rotating fluidized bed in a vortex

chamber

9:30a – 10:00a T. Tourneur, J. De Wilde Particle production and treatment in

vortex chamber-generated rotating

fluidized beds

Juray de Wilde

Université Catholique de

Louvain

Satoru Watano

Osaka Prefecture University

Organizers

ROTATING REACTORS

MONARCHY 3



62

I3

I3-1

TU

ES

DA

Y

Chair: Kamel Fezzaa

8:00a – 8:30a J.S. Lee, B.M. Weon, S.J.

Park, S.-H. Lee, K. Fezzaa &

J.H. Je

Ultrafast/nanoscale dynamics by X-ray

imaging

8:30a – 9:00a S-N. Luo Dynamic X-ray Imaging in Real and

Reciprocal Spaces for Multiscale

Measurements

9:00a – 9:30a S. A. Mäkiharju Advances in Quantitative X-Ray Imaging

for Multiphase Flows

9:30a – 10:00a J. S. Waters Insights on the fluid transport, geometric

scaling, and living architecture of insect

physiological systems revealed by x-ray

imaging

I3-2

TU

ES

DA

Y

Chair: Kamel Fezzaa

2:00p – 2:30p J. Mi, T. Lik Lee, K. Fezzaa Ultrafast synchrotron X-ray imaging of

multiphase fluid flow in metal

solidification under ultrasound

2:30p – 3:00p I. Khlifa, A. Vabre, M.

Hocevar, K. Fezzaa, O.

Coutier-Delgosha

Experimental investigation of unsteady

cavitation using fast X-ray imaging

3:00p – 3:30p S. Magnan & O. Petel Continuous D X-ray Digital Image

Correlation to Resolve Dynamic

Deformation and Strain Fields of Internal

Planes

3:30p – 4:00p

Kamel Fezzaa Advanced Photon

Source (APS),

Argonne National

Laboratory

Organizer

X-RAY IMAGING MAUI SUITE 1-2


63

I1

Measuring turbulent water surfaces using laser

scanning

Abstract: Water surface measurements of turbulent free

surface flows are an important part of hydraulic

measurements. Such flows are encountered in a wide range

of applications in civil, chemical, environmental,

mechanical, mining and nuclear engineering. Our

presentation will provide an overview of application of the

laser scanning as a measurement method for acquiring the

non-homogeneous and nonstationary topography of free

surface flows. Laser ranging is a measurement method,

applied in a wide range of applications. In comparison with

conventional methods (resistance probes, U-manometers,

ultrasonic sensors, point gauges etc.) LIDAR offers an

advantage particularly in cases with complex water surface

topography like in those found in highly turbulent two-

phase flows, where other methods do not provide

sufficiently accurate results. Due to the specificity of the

interaction between light emitted from LIDAR and

turbulent water surface, the number of successfully

measured points is often low, while distance measurements

have high measurement uncertainty. The exact light

reflection from the measured water is often not known. It

can appear on bubbles, water surface, droplets and/or

foam, while also being single reflection, multiple

reflections or even multiple reflections including reflection

from the wall of the measuring station. This may lead to

over or underestimation of the measured distance to the

water surface. LIDAR measurements of transversal water

profile along the confluence of two supercritical flows

were compared with measurements with a high-speed

camera. The high-speed camera was operated on the

principle of laser triangulation, using only the illumination

from the LIDAR laser beam. Since, no other state-of-the-

art method for measuring instantaneous water surface

profiles exists, LIDAR and triangulation methods could

only be compared with each other. The results show good

agreement between both methods for the average turbulent

water profile and fair agreement for instantaneous profiles.

Gašper Rak graduated in 2006 with thesis ˝Using

spatial data in open channel hydraulic˝ at the Faculty of

Civil and Geodetic Engineering of the University of

Ljubljana (Slovenia), where he was subsequently

employed as assistant. Main focus of his work is

numerical and physical modeling of river hydraulics,

flood hazard assessment, flood risk management,

spatial information systems etc. In recent years he has

also been involved in numerous studies for two large

hydro projects dealing with the designing process.

During his postgraduate studies, he analyzed a

floodplain land use impact on the runoff regime in a

retention area and consequently on flood wave

propagation. In 2013 he obtained his MSc title with the

thesis “Hydraulic Analysis of Floodplain Land Use

Effects on Flood Wave Propagation”. He belongs to the

teaching staff of the Laboratory of Fluid Mechanics,

where he also did his researches of different hydraulic

structures and phenomena. This year he earned his

Ph.D. title with thesis entitled ˝ Water surface topology

of supercritical confluence flow˝. Memberships: SDHR.

FLOW VISUALIZATION

Philipp Mattern ILA_5150

Organizer

MAUI SUITE 1-2

Gašper Rak

University of Ljubljana, Slovenia

Keynote speech


64

I1-1 S

UN

DA

Y

Chair: Chris Willert

10:00a – 10:40a G. Rak

Keynote

Measuring turbulent water surfaces using

laser scanning

10:40a – 11:05a Z. Pan, J. Whitehead, G.

Richards, T. Truscott

Error Propagation dynamics: from PIV-

based pressure reconstruction to vorticity

field calculation

11:05a – 11:30a A. Marsan, C. Pérez Arroyo,

Y. Pasco, S. Moreau

Spectral and wavelet analysis of an aero-

acoustic feedback loop in a transonic

outflow valve based on Schlieren imaging

11:30a – 11:55a M. Wang Metrology of Tomography for

Engineering

I1-2

SU

ND

AY

Chair: Simo Makiharju

2:00p – 2:25p I. Khlifa, S. Fuzier & O.

Coutier-Delgosha

PIV in cavitating flows: comparison

between measurements by optical means

and X-ray imaging

2:25p – 2:50p J. Pan, Q-T. Xiao & J-X. Xu Novel statistical methods for measuring

mixing uniformity in a direct contact heat

exchanger

2:50p – 3:15p S. Andres, J. Funcke, M.

Wirsum & T. Polklas

Suitability of light scattering technique

for measurements of water droplets in

turbine wet steam flows

3:15p – 3:40p J. Seo, B. Han, S. Park & S.

H. Rhee

Experimental Study on Propeller Wake

Dynamics in Self Propulsion by Towed

Underwater PIV Measurement

3:40p – 4:05p O. Coutier-Delgosha, Y.

Adamczak

Investigation of thermal effects in

cavitating flows by high speed imaging


65

I7

Applications of Plenoptic PTV: A Single-

Camera Time-Resolved Three-Dimensional

Fluid Flow Measurement Technique

Abstract: When conducting experiments in

fluids that attempt to measure the local velocity

of a fluid, most modern approaches involve

imaging seed particles present in the fluid. The

current state of the art uses multi-camera

approaches such as tomographic particle image

velocimetry (TOMO-PIV) [1] and, more

recently, particle tracking algorithms such as

“Shake-The-Box” [2] to obtain all three

components of velocity in three dimensions

(3D3C). However, multi-camera approaches

are generally limited to use in macroscopic

cases where the positioning of the cameras is

possible and even in these cases obtaining and

maintaining proper camera orientation can be

time-consuming. These challenges are

exacerbated when attempting mini- or micro-

scale imaging, where aligning all four cameras

to image the same volume can be all but

impossible. Using plenoptic imaging, a single

camera can encode information about 3D space

onto a 2D CCD [3]. This approach is viable as

a simple 3D3C method in macroscale

experiments and could be invaluable as a 3D3C

tool in mini- and micro-scale experiments

where only a single route of optical access is

available. The present work focuses on

conducting mini-scale experiments using a

commercial multi-focus plenoptic camera (R5,

Raytrix GmbH) with commercial plenoptic

image processing software (RxLive 2.01,

Raytrix GmbH) to perform time-resolved 3D3C

particle tracking velocimetry (PTV) using an

in-house developed code (in Matlab R2015b).

David S. Nobes is a Professor in the Department of

Mechanical Engineering at the University of Alberta. His

research into the development of photonic-based

measurement systems has been used in a variety of areas

including macro-scale turbulent flow, microfluidics, optical

strain measurement of orthodontic devices and optical

analysis of truck tires. This work includes the development of

the measurement systems [Doppler global velocimetry

(DGV), PIV, PTV, plenoptic PTV, PLIF, temperature PLIF],

their analysis [calibration, uncertainty], development of

major components [fiber bundle imaging, iodine cells, image

splitters] in the design of facilities to develop the

phenomenon under investigation [wind tunnels, combustion

systems, sprays, turbulent jets, low pressure cells, micro-

fluidics, mechanical loading frames]. He has a PhD from the

University of Adelaide, Australia which investigated the

effects of mixing on turbulent combustion and has completed

post-doctoral work developing photonic techniques at

Cranfield University, UK. This academic work is coupled

with extensive design and research work in different areas of

industry including manufacturing, oil and gas and mining.

David Nobes

University of Alberta,

Canada

Keynote speech

HIGH SPEED IMAGING

Mujtaba Mansoor

Utah State University

Tadd Truscott Utah State University

Organizers

MAUI SUITE 1-2


66

I7-1

WE

DN

ES

DA

Y

Chairs: Mutjaba Mansoor & Tadd Truscott

8:00a – 8:25a Y. Liu, Y. Fu Advanced Image Processing Techniques

for Bubbly Flow Measurement

8:25a – 8:50a R. Funatsu, T. Nakamura, H.

Shimamoto

Single-chip 8K full-resolution imaging

using a 133Mpixel 60-fps CMOS image

sensor

8:50a – 9:15a H. Soltani, J. Hadfield, D. S.

Nobes

Developing Quantitative Information

From Shadowgraph Images of Air

Bubbles Passing Through a Mini-Slot

9:15a – 9:40a A. Kiyama,Y. Miyazaki, Z.

Pan, M. M. Mansoor, T. T.

Truscott, Y. Tagawa

High-speed impact of the focused micro

liquid jet onto liquid pool

9:40a – 10:05a M. M. Mansoor, J. Belden,

S. R. Rahman & T. T.

Truscott

Peloton formations: Swarming in cyclists

contesting strategically in Tour de France

racing events

I7-2

WE

DN

ES

DA

Y

Chairs: Mutjaba Mansoor & Tadd Truscott

2:00p – 2:40p J. Hadfield, H. Soltani, D. S.

Nobes

Keynote

Applications of Plenoptic PTV: A Single-

Camera Time-Resolved Three-

Dimensional Fluid Flow Measurement

Technique

2:40p – 3:05p T. T., Truscott, M. M.,

Mansoor, S. R., Rahman &

J. Belden

Swarm formation characteristics in Black

Tetra fish

3:05p – 3:30p J. Allen & R. Hayashi Optical-Acoustical Measurements and

Imaging

3:30p – 3:55p H. Feng, X. Wang, Y. Liu,

MD, X. Zhao,

Visual evaluation of cerebral venous

drainage in intracerebral hemorrhage

patients by computed tomography

angiography

3:55p – 4:20p X. Wang, X. Zhao Risk factors for MRI-visible perivascular

spaces in spontaneous intracerebral

haemorrhage patients: a cohort study

Documents

ISROMAC 17 ISIMET 2isromac-isimet.univ-lille1.fr/templates/Program... · ISROMAC 17 & ISIMet 2 – Program 3 plenary sessions. I am confident that following ISROMAC & ISIMet events