University of Technology Mechanical Engineering Department

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University of TechnologyMechanical Engineering Department

Final Year Examination 2014/2015Subject: CAEDivision: All DivisionsExaminer(s): CAE Group

Year:4th yearExam Time: 3 Hrs.Date: 20 / 10 / 2015

Q1. For the geometry shown in figure bellow, simulate transient structure analysis to determinedeformation, stress and strain.

Assumption:Material: steelElastic deformation

Notes: 1. Answer (one) question only. 2. Assume any missing data. 3. All dimensions in millimeters.

50 marks

P1 P2

Fixed

3000 Pa

0.5 second

4500 Pa

0.5 second

P1

P2

2-2

Q2. Simulate thermal and structure interaction in heat sink shown in the figure bellow to determinetemperature distribution, deformation, stress, and strain:

AssumptionSteady stateLower face is fixed and subjected to constant temperature, T = 90 oCAll other faces are subjected to convection heat transfer, ∞ Material: Copper

50 marks

X

Y

Z

University of Technology

Mechanical Engineering Department

Final Year Examination 2014/2015

1-2

Year: 4th

year classes

Time: Hrs. Date: 16 / 9 / 2014

Subject: CAE

Division: All Divisions

Examiner(s): CAE group

Q1. For the frying pan shown in figure bellow, determine:

A) Temperature distribution after 20 sec. due to thermal load showing in load history.

B) Steady state thermal induced stress due to thermal load.

Assumption:

Tinitial = 25 oC , T∞ = 20

oC , h∞ = 5 W/m

2.oC

Material: steel

Dimension in mm and thickness of the frying pan = 4 mm

Lower surface is subjected to the temperature showing in load history.

All other surfaces are subjected to free convection boundary conditions.

Note: 1. Answer ( one ) question only. 2. Assume any missing data.

50 marks

Fixed

Temp.

250

25

Time 0 20

Load History

University of Technology

Mechanical Engineering Department


2-2

Year: 4th

year classes

Time: Hrs. Date: 16 / 9 / 2014

Subject: CAE

Division: All Divisions

Examiner(s): CAE group

X

Z

Z

Y

Q2. Simulate fluid structure interaction to determine the stress and deformation in car

model shown in the figure below:

Assumption:

Steady state

Working fluid: air

Turbulent flow

Vin=10 m/s

Pout=1 atm.

Dimension in cm

Determine the following:

Contour of pressure in (YZ-plane), at channel mid-plane

Vector of velocity in (YZ-plane), at channel mid-plane

Contour of velocity in (XZ-plane), at channel mid-plane

Pout

50 marks

Vin

University of TechnologyMechanical Engineering DepartmentFinal Year Examination 2014/2015

1-2

Year: 4th year classesTime: Hrs.Date: 1 / 6 / 2015

Subject: CAEDivision: Air Conditioning and Refrigeration EngineeringExaminer(s): CAE group

Q1. Simulate fluid structure interaction to determine the stress and deformation in thecondenser shown in figure below due to fluid flow and thermal load.

Assumption:

Steady stateWorking fluid: waterTurbulent flowVin = 1 m/sTin = 60 oCPout = 1 atmDimension in mm

All surfaces are subjected to convection

∞ .

Determine the following:Contour of pressure in (YZ-plane), at mid-planeVector of velocity in (YZ-plane), at mid-planeContour of velocity in (XZ-plane), at mid-plane

Note: 1. Answer ( one ) question only. 2. Assume all missing data.

50 marks

X

Y

Z

Vin

Tin

Pout


2-2


Subject: CAEDivision: Air Conditioning and Refrigeration EngineeringExaminer(s): CAE group

Q2. (a) Simulate steady state convection in geometry shown in figure below,(b) Simulate fluid structure interaction to determine maximum stress and strain

due to pressure load and thermal load shown in figure below.

Assumption:

Steady stateWorking fluid: airLaminar flowDimension in mm

All surfaces subjected to convection

∞ .

Hint: For the fluid part, generate mesh usingcurvature normal angle 60o

Determine the following:Contour of pressure in (YZ-plane), at mid-planeVector of velocity in (YZ-plane), at mid-planeContour of velocity in (XZ-plane), at mid-plane

X

Y

Z

50 marks

Fixed

T = 55 oC

F = 200 N


1-2


Subject: CAEDivision: General Mechanical EngineeringExaminer(s): CAE group

Fx (N)

Q1.For the Hand Crunch shown in figure bellow simulate:A) Free vibration to determine:1- Mode shape. And 2- Natural frequencies.B) Harmonic vibration to determine:1- Deformation response of geometry at load direction.2- Stress and strain at maximum peak frequency.C) Buckling analysis to determine buckling loadD) Transient structure analysis to determine deformation and stress at t=0.5 s., t=1 s.Time step =0.2 s.Total time =1 s.Assumption:Apply excitation frequencies within the range of the natural frequencies of the geometryMaterial: steelElastic deformation


Fx

Fixed hand

10.4 Time (s)

1

5


2-2


Subject: CAEDivision: General Mechanical EngineeringExaminer(s): CAE group

Vin

Q2.Simulate fluid structure interaction to determine the stress and deformation inHeat exchanger due to fluid flow and thermal load for the geometry shown in figurebelow:

Assumption:

Steady stateWorking fluid: waterTurbulent flowVin= 0.5 m/sTin= 50 oCPout= 1 atmDimension in mm

All surfaces subjected to Convection ∞ .

Determine the following:Contour of pressure in (YZ-plane), at duct mid-planeVector of velocity in (YZ-plane), at duct mid-planeContour of velocity in (XZ-plane), at duct mid-plane

Pout

X

Y

Z

50 marks

Vin

Tin


1-2

Year: 4th year classesTime: Hrs.Date: 26 /5 / 2014

Subject: CAEDivision: Automotive and Aircraft EngineeringExaminer(s): CAE group

Force (Fy)400 N

250 N

Q1.For the bracket shown in figure bellow simulate:A) Free vibration to determine:1-Mode shape. And 2- Natural frequencies.B) Harmonic vibration to determine:1- Deformation response of geometry at load direction.2- Stress and strain at maximum peak frequency.C) Transient structure analysis to determine deformation at time intervals t=2.5 sec. andt=9.5 sec. assume ∆t=1 sec. and total time=10 sec.Assumption:Apply excitation within the range of the natural frequency of geometryMaterial: steelElastic deformationDimension in mm

Note: 1. Answer ( one ) question only. 2. Assume any missing data.

Time (t) 5 7.5 10 sLoad History

Fixed

Fixed

Fy

Fy

50 marks


2-2

Year: 4th year classesTime: Hrs.Date: 26 /5 / 2014

Subject: CAEDivision: Automotive and Aircraft EngineeringExaminer(s): CAE group

X

Y

Z

Q2. Simulate fluid structure interaction to determine the stress and deformation inairplane due to fluid flow for the geometry shown in the figure below:

Assumption:Steady stateWorking fluid: airTurbulent flowVin=15 m/sPout=1 atmDimension in cm


Pout

50 marks

Vin

Y

XZ

1-2


First Term Examination 2014/2015Subject: CAE (ANSYS)Division: Automotive and Aircraft EngineeringExaminer(s): CAE Group

Year: 4th yearExam Time: 1.5 Hrs.Date: 29 / 1 / 2015

Q1: Simulate deformation and stress for the box shown in figure below:Assumption:

Steady state , Material: Polyethelene

Notes: 1. Answer (one) question only. 2. Assume all missing data. 3. All dimensions in millimeters.

15 marks

Fixed

Fixed

P = 5000 Pa

2-2

Z

F1x=2000 N

F2x=2000 N

Q2: For the geometry shown in figure bellow, simulate temperature distribution, stress,strain and deformation due to forces and thermal load applied on body:

Assumption:Material: steel, Elastic deformationLower surface is fixed and subjected to constant wall temperature = 250All other surfaces are subjected to free convection heat transfer

15 marks

X

Y

1-2


First Term Examination 2014/2015Subject: CAE (ANSYS)Division: Air Conditioning and Refrigeration EngineeringExaminer(s): CAE Group


Q1. Simulate thermal and structure interaction in heat sink shown in the figure bellow todetermine temperature distribution, deformation, stress, and strain at mid-plane:

AssumptionSteady stateLower face is fixed and subjected to constant temperature, T = 85 oCAll other faces are subjected to convection heat transfer, ∞ . Material: Copper


15 marks

X

Y

Z

2-2

Z

Q2: For the geometry shown in figure bellow simulate:

A) Free vibration to determine:1- Mode shapes. And 2- Natural frequencies.B) Harmonic vibration to determine:1- Deformation response of geometry at load direction.2- Stress and strain at maximum peak frequency.C) Transient structural analysis to determine deformation at time intervals t=0.2 sec.,t=0.4 sec. and t=1.0 sec. assume ∆t=0.1 sec. and total time=1 sec. Apply excitationfrequencies within the range of the natural frequencies of the geometry.Assumption:Material: steel , Elastic deformation

15 marks

X

Y

F2

F1

Fixed

Loads History

0 0.5 1 sec. 0 0.5 1 sec.

F1

250 N

F2

150 N200 N

100 N

1-2

Z

University of TechnologyMechanical EngineeringDepartmentFirst Term Examination 2014/2015

Subject: CAE (ANSYS)Division: General Mechanical EngineeringExaminer(s): CAE Group

Year:4th yearExam Time: 1.5 Hrs.Date: 25 /1/2015

Q1. For the geometry shown in figure bellow simulate:A) Free vibration to determine:1- Mode shape. And 2- Natural frequencies.B) Harmonic vibration to determine:1- Deformation response of geometry at load direction.2- Stress and strain at maximum peak frequency.C) Static structure analysis to determine deformation and stress.Assumption:Apply excitation frequencies within the range of the natural frequencies of the geometryMaterial: steelElastic deformation


15 marks

X

Y

Fz= 100 N

Fixed

2-2

X

Y

Z

Q2. Simulate heat transfer in heat sink shown in the figure bellow:

AssumptionTransient stateLower face is subjected to constant heat flux =All other faces are subjected to free convection heat transfer ∞ = ℃ = . ℃Material: AluminumTime step (t) = 0.1 sec.Total time = 5 sec.Initial temperature = 100 oC

Determine the followingTemperature distribution in the mid (X-Y)-plane of the body at time interval:t=1 sec.t=3 sec.t=5 sec.

15 marks

University of TechnologyDepartment of Machines and Equipment Engineering


1-2

Year: 4th yearExam Time: Hrs.Date: 19 / 11 / 2014

Subject: CAE (ANSYS)Division: All DivisionsExaminer(s): Dr. Nabeh Natic and Dr. Laith Jaafer

X

Y

Z

Q1. For the geometry shown in the figure below, the lower surface (base) is insulated.All other surfaces are subjected to free convection boundaries. The three heatersare maintained at constant temperature (T=constant=400 K). Determine contoursof temperature at mid-plane.

Assumptions:Dimension in MetersWorking fluid: AirT∞=300 K , h∞=4 W/m2.K

50 marks




2-2



Force (F)

200 N

100 N

F

Fixed

ϕ 0.03

Groove=0.001

Q2. Simulate deformation and stress for the spanner shown in figure bellow:

AssumptionTransient stateMaterial: steelDimension in MetersLoad history shown in fig. bellow:

Determine deformation and stress distribution in spanner at time intervals:t = 1 sec.t = 2 sec.t = 3 sec.t = 4 sec.

50 marks

Time (sec.) 2 3 5Load History



1-2



X

Y

Z Load (P)0

-10000

Q1. The geometry shown in the figure below is initially at 28 oC, heat is applied at theouter surface of the cylindrical bars. All other surfaces are subjected to convectionboundaries (Q). Simulate transient thermal and transient structure interaction todetermine temperature distribution at time interval 0.25 sec. and 2 sec., thenperform structure analysis with (P) applied at the upper plate and temperature loadfrom the previous thermal analysis to determine the stress and deformation at timeinterval 0.5 sec. and 1 sec.

Assumption:Dimension in MetersMaterial: CopperT∞=30 oC , h∞=2.5 W/m2. oCQ=50000 W/m2

0 1 sec. Time (t)Load History


50 marks

P

Q

Fixed



2-2



X

Y

Z

Q2.Simulate fluid structure interaction to determine the stress and deformation onprototype rocket due to fluid flow for the geometry shown in the figure below:

Assumption:Steady state , Working fluid: air , Turbulent flowVin=100 m/s , Pout=1 atm.The stem is fixed at ductThe rocket have three wings, 120o between eachDimension in Millimeters

Determine also the following:Contours of pressure in (YZ-plane), at duct mid-planeVectors of velocity in (YZ-plane), at duct mid-planeContours of velocity in (XZ-plane), at duct mid-plane

stem

Vin

50 marks

Pout

wing



1-2


Subject: CAE (ANSYS)Division: Automotive and Aircraft EngineeringExaminer(s): Dr. Nabeh Natic and Dr. Laith Jaafer

P

100 N/m2

Q1. Simulate spring-structure system shown in the figure below to determine thestress and deformation due to pressure load at time interval t=0.25 s, t=0.5 s, andt=1 s.Assumption:

Transient stateTime step =0.002 sTotal time =1 sKspring= 100 N/mDimension in Meters


P

fixed

Time 0.01 sec. 1 sec.Load History



2-2


Subject: CAE (ANSYS)Division: Automotive and Aircraft EngineeringExaminer(s): Dr. Nabeh Natic and Dr. Laith Jaafer

X

Y

Z

Vin

Q2.Simulate fluid structure interaction to determine the stress and deformation inairplane due to fluid flow for the geometry shown in the figure below:

Assumption:Steady stateWorking fluid: airTurbulent flowVin=5 m/sPout=1 atmThe stem is fixed at duct baseDimension in Meters


Pout

50 marks

stem

0.05



1-2


Subject: CAE (ANSYS)Division: General Mechanical EngineeringExaminer(s): Dr. Nabeh Natic and Dr. Laith Jaafer

X

Y

Z

Vin

Pout

Pout

Pout

Spherical expansion Tse=30 oC

Supports

Q1. Simulate fluid and thermal structure interaction to determine the stress anddeformation due to fluid flow and thermal load for the geometry shown in the figurebelow:

Assumption:Steady stateWorking fluid: airTurbulent flowDimension in MetersVin=2 m/sTin=150 oCTse=30 oCPout=1 atmAll pipes thicknesses = 0.01 m

Determine the following:Contours of pressure in (XZ-plane), at pipes mid-planeVectors of velocity in (XY-plane), at pipes mid-planeContours of temperature in (XZ-plane), at pipes mid-plane 50 marks


The geometry is fixed at supports.

Pout



2-2


Subject: CAE (ANSYS)Division: General Mechanical EngineeringExaminer(s): Dr. Nabeh Natic and Dr. Laith Jaafer

X

Y

Z

Q2. Simulate fluid structure interaction to determine the stress and deformation inblades due to fluid flow for the geometry shown in the figure below:

Assumption:Steady stateWorking fluid: airTurbulent flowVin=5 m/sPout=1 atmThe stem is fixed at duct baseDimension in Meters

Determine the following:Contours of pressure in (YZ-plane), at duct mid-planeVectors of velocity in (YZ-plane), at duct mid-plane

Contours of velocity in (XZ-plane), at duct mid-plane 50 marks

stem

Vin

Pout



1-2


Subject: CAE (ANSYS)Division: Air Conditioning and Refrigeration EngineeringExaminer(s): Dr. Nabeh Natic and Dr. Laith Jaafer

Supports

Q1.Simulate fluid structure interaction to determine the stress and deformation due tofluid flow for the geometry shown in the figure below:

Assumption:Steady stateWorking fluid: waterTurbulent flowDimension in MetersVin=0.5 m/sPout=1 atm

Determine the following:Contour of velocity in (XZ-plane), at pipes mid-planeVector of velocity in (XZ-plane), at pipes mid-planeContour of pressure in (XZ-plane), at pipes mid-plane 50 marks


All pipes thicknesses = 0.01 m

Pout Vin

X

Y

Z

The geometry is fixed at supports.



2-2


Subject: CAE (ANSYS)Division: Air Conditioning and Refrigeration EngineeringExaminer(s): Dr. Nabeh Natic and Dr. Laith Jaafer

Force (F)

100 N

50 N

F

Lower surface

Z

Q2.For the bracket shown in figure bellow simulate:A) Free vibration to determine:1- Mode shape. And 2- Natural frequencies.B) Harmonic vibration to determine:1- Deformation response of geometry at load direction.2- Stress and strain at maximum peak frequency.C) Transient structure analysis to determine deformation at time intervals t=0.025sec. and t=1.5 sec. assume ∆t=0.01 sec. and total time=2 sec.Assumption:Apply excitation within the range of the natural frequency of geometryMaterial: steelElastic deformationLower surface is fixedDimension in Millimeter

50 marksTime (t) 0.05 sec. 1 sec. 2 sec.

Load History

X

Y


Second Term Examination 2013/2014Subject: CAE (ANSYS)Division: General Mechanical EngineeringExaminer(s): Dr. Nabeh Natic and Dr. Laith Jaafer

Year: 4th yearExam Time:1.5 Hrs.Date: 6 / 4 / 2014

Notes: 1. Answer ( one ) question only. 2. Assume all missing data.

Q1: Simulate fluid structure interaction to determine the stress and deformationdue to fluid flow in the figure shown below:

AssumptionSteady state flowTurbulent flowWorking fluid: waterDuct thickness 3 mmVin = 1 m/sPexit = 1 atm.All dimensions in meter

Determine the followingcountor plot of velocity at yz plane (mid plane)vector plot of velocity at yz plane (mid plane)

Y

Z

X

Vin

Pexit

fixedfixed

Q2: Determine total deformation and stress of the pinned bracket shown in figurebellow due to the applied thermal load:

AssumptionMaterial: steelSteady stateT1= T2= 100 oC and T3= 55 oCAll pins are exposed to convection boundary condition, h= 3 W/m2.oC and T∞=25 oCAll other surfaces are insulatedDimensions of geometry in mm

fixed , T3

fixed , T1

fixed , T2


Second Term Examination 2013/2014Subject: CAEDivision: All DivisionsExaminer(s): Dr. Nabeh Natic and Dr. Laith Jaafer

Year: 4th year classesExam Time:1.5 Hrs.Date: 8 / 4 / 2014

Q: Simulate fluid structure interaction to determine the stress and deformation onbaffles due to flow in passage shown in figure below:

AssumptionSteady state flowTurbulent flowWorking fluid: waterAll dimensions in cm

Determine also the followingCountor plot of velocity at yz plane (mid plane)Vector plot of velocity at yz plane (mid plane)

Y

Z

X

Pexit=1 atm

Vin=1 m/s

Z

Y

X

Vin

fixed


Second Term Examination 2013/2014Subject: CAE (ANSYS)Division: Air Conditioning and Refrigeration EngineeringExaminer(s): Dr. Nabeh Natic and Dr. Laith Jaafer


Notes: 1. Answer ( one ) question only. 2. Assume all missing data.Q1: Simulate fluid structure interaction to determine the stress and deformationdue to fluid flow in the figure shown below:

AssumptionSteady state flowTurbulent flowWorking fluid: waterVin= 30 m/sP1= P2= P3= P4= Patm.

All dimensions in meter

Determine the followingcontour plot of velocity at yz plane (mid plane)contour plot of stress on pipevector plot of velocity at yz plane (mid plane)

P2

P1

P4

P3

fixed

fixed

Q2: For the figure shown below, simulate thermal induce stress to determine stressand deformation due to convection:

Assumption* Material: steel* All outer surfaces are subjected to convection heat transfer T∞ = 50 oC ; h = 3 W/m2.oC* All inner surfaces are subjected to constant heat flux qo = 1000 W/m2


Second Term Examination 2013/2014Subject: CAE (ANSYS)Division: General Mechanical EngineeringExaminer(s): Dr. Nabeh Natic and Dr. Laith Jaafer



Q1: Simulate fluid structure interaction to determine the stress and deformationon orifice due to fluid flow in pipe with orifice shown in figure below:

AssumptionSteady state flowTurbulent flowWorking fluid: waterPipe thickness 3 mmOrifice plate thickness 5 mmAll dimensions in meter

Determine the followingcountor plot of velocity at yz plane (mid plane)countor plot of stress on pipevector plot of velocity at yz plane (mid plane)

Orifice plate

Vin=0.2 m/s

Pexit=1 atm

X

Y

Z

X

Z

Yfixed

P=15 N/m2

Q2: For the plate shown in figure bellow Simulate:A) Free vibration to determine mode shape and natural frequency.B) Harmonic vibration to determine:

1- Deformation response of geometry at load direction.2- Stress and strain at maximum peak frequency.

Assumption*Material: steel*Apply excitation frequency within the range of the natural frequency of geometry* Plate thickness 5 mm


Second Term Examination 2013/2014Subject: CAE (ANSYS)Division: Automotive and Aircraft EngineeringExaminer(s): Dr. Nabeh Natic and Dr. Laith Jaafer



Q1: Determine temperature distribution, stress and deformation of heat sinkshown in figure below due to thermal load applied on body:

AssumptionSteady state flowLower face is subjected to constant heat flux = 7000All other faces are subjected to free convection heat transfer = 20℃ ℎ= 5 ℃All dimensions in millimeters


Second Term Examination 2013/2014Subject: CAE (ANSYS)Division: Automotive and Aircraft EngineeringExaminer(s): Dr. Nabeh Natic and Dr. Laith Jaafer


Q2: Simulate fluid structure interaction to determine stress and strain on wedgedue to fluid flow:

AssumptionSteady stateTurbulent flowWorking fluid = AirVin =10 m/sPexit =1 atmAll dimensions in meters

Vin

Pexit


First Term Examination 2013/2014Subject: CAE (ANSYS)Division: All DivisionsExaminer(s): Dr. Nabeh Natic and Dr. Laith Jaafer

Year: 4th yearExam Time: 1.5 Hrs.Date: / 1 / 2014

Note: Assume all missing data.

Q1: Simulate turbulent flow shown in figure bellow:

AssumptionSteady state flowTurbulent flowWorking fluid: AirV1 =V2=1.5 m/sV3 =V4=2 m/sT1 =T2=20 oCT3 =T4=85 oCPexit= 1 atmAll dimensions in meter

Determine the followingcountor plot of velocity at yz plane (midplane)countor plot of pressure at yz plane (midplane)vector plot of velocity at yz plane (midplane)countor plot of velocity at xz plane (y=0.45)countor plot of temperature at yz plane (midplane)

Pexit

V1V2

V3

t

V4


First Term Examination 2013/2014Subject: CAE (ANSYS)Division: Automotive and Aircraft EngineeringExaminer(s): Dr. Nabeh Natic and Dr. Laith Jaafer


X

Y

Z

Vin

Pexit

Notes: 1. Answer ( one ) question only. 2. Assume all missing data. 3. All dimensions in meter.

Q1: Simulate turbulent flow in duct with obstacle shown in figure bellow:

AssumptionSteady state flowTurbulent flowWorking fluid: AirVin=7.5 m/sPexit= 1 atm

Determine the followingcountor plot of velocity at yz plane (mid plane)countor plot of pressure at yz plane (mid plane)vector plot of velocity at yz plane (mid plane)countor plot of velocity at xz plane (y=0.128)countor plot of temperature at yz plane (mid plane)


First Term Examination 2013/2014Subject: CAE (ANSYS)Division: Automotive and Aircraft EngineeringExaminer(s): Dr. Nabeh Natic and Dr. Laith Jaafer


100

F

Load (N)

ϕ=0.151

1

10.5

0.5

F

F

Q2: Simulate transient vibration to determine deformation and stress in spring-plate system shown in figure bellow:

AssumptionTransient stateMaterial: steelPlate thickness= 1 cm∆t=0.05 sTotal time=10 sK=200 N/mC=3 N.s/mLoad history shown in figure.

Determine the followingDeformation and stress distribution in bracket at time intervals:t=1 sec. , t=5 sec. , t=7.5 sec. and t=10 sec.

0.15 Time (sec.) 10Load History

Tcold

ThotX

Y

Z


First Term Examination 2013/2014Subject: CAE (ANSYS)Division: ACExaminer(s): Dr. Nabeh Natic and Dr. Laith Jaafer



Q1: Simulate free convection in the enclosure shown in figure bellow:

AssumptionSteady state flowLaminar flowWorking fluid: AirThot=85 oC (lower surface)Tcold=15 oC (upper surface)All other surfaces are insulatedAll dimensions in meter

Determine the followingcountor plot of velocity at yz plane(mid plane)countor plot of pressure at yz plane(mid plane)vector plot of velocity at yz plane(mid plane)countor plot of velocity at xz plane(y= 0.5)countor plot of temperature at yz plane(mid plane)

P

Time

1 2 3

Q2: Simulate deformation and stress in bracket shown in figure bellow:

AssumptionTransient stateMaterial: steel

Load history shown in fig. bellow:

Determine the followingDeformation and stress distribution in bracket at time intervals:t = 0.5sec.t = 2 sec.t = 4 sec.t = 5 sec.

0.1

P


First Term Examination 2013/2014Subject: CAE (ANSYS)Division: Air Conditioning and Refrigeration EngineeringExaminer(s): Dr. Nabeh Natic and Dr. Laith Jaafer


Vin

X

Y

Z

0.1

0.4

0.05

0.4

0.05

0.150.15

0.1

1

P1

P4

P3

P2

R=0.1


Q1: Simulate flow through in duct shown in figure bellow:

AssumptionSteady state flowTurbulent flowWorking fluid: waterP1=P2=P3=P4= 1 atmpVin=2 m/sDimensions in meter

Determine the followingcountor plot of velocity at yz plane (mid plane)countor plot of pressure at yz plane (mid plane)vector plot of velocity at yz plane (mid plane)countor plot of velocity at xz plane (y= 0.025 )


First Term Examination 2013/2014Subject: CAE (ANSYS)Division: Air Conditioning and Refrigeration EngineeringExaminer(s): Dr. Nabeh Natic and Dr. Laith Jaafer


X

Y

Z

0.1

0.1

0.2

0.2

0.2

0.2

T=150 oC

ϕ=0.2

ϕ=0.1

ϕ=0.03

All other surfaces are subjected toconvection boundary conditions.

T∞ = 25 oC ; h = 7 W/m2.oC

Q2: Simulate heat transfer in pinned cylinder shown in figure bellow:

AssumptionTransient stateMaterial: copperTime step ( T )=10 sTotal time = 3000 sInitial temperature=20 oCDimensions in meter

Determine the followingTemperature distribution in the body at time interval:t=3000 st=2500 st=1000 st=10 s

Documents

University of Technology Mechanical Engineering Department