tsi incorporated copyright© 2002 tsi incorporated a sample of piv applications

Copyright© 2002 TSI Incorporated

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A SampleA Sampleofof

PIV PIV ApplicationsApplications


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PIV ApplicationsPIV Applications

Measuring “micro-flows”Measuring “micro-flows” Studies of turbulence structureStudies of turbulence structure Unsteady or periodic flowsUnsteady or periodic flows Capture transient flow detailsCapture transient flow details Complex steady flow fieldsComplex steady flow fields Extremely low velocity flow fieldsExtremely low velocity flow fields Spatial gradients (at thousands of points) of instantaneous and Spatial gradients (at thousands of points) of instantaneous and

average flow propertiesaverage flow properties Obtaining global nature of flowsObtaining global nature of flows Examining spatial interdependence of flow propertiesExamining spatial interdependence of flow properties


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MicroPIVMicroPIVStereoscopic arrangementStereoscopic arrangement


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Micro PIV SystemMicro PIV System

nminc 532

M i c r o c h a n n e l

C C D c a m e r a2 0 4 8 x 2 0 4 8 x 1 2 b i t

nmemit 610

F l u o r e s c e n t p a r t i c l e sO b j e c t i v e l e n s

O p t i c a l f i l t e r

R e l a y l e n s

M i c r o s c o p e F o c u s i n g b o d y

R o t a t i n g s t a g e

W o r k i n g D i s t a n c e


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Measurements in a Measurements in a “microchannel”“microchannel”

800 m

800 m


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Microchannel measurementsMicrochannel measurements

Kobayashi, Taniguchi Oshima Lab

University of TokyoUniversity of Tokyo


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Dual-plane stereoscopic PIV Dual-plane stereoscopic PIV systemsystem

Image recording systemImage recording system

Camera 3

Schiempflug condition

Mirror

Camera 2

250 250

Vertically polarized laser sheet (S-polarized light)

Polarizing beamSplitter cube

Camera 1

Horizontally polarized laser sheet (P-polarized light)

Lens planeMirror

Image plane

Camera 4

To laser system

Synchronizer

Courtesy: University of TokyoUniversity of Tokyo


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Dual-plane stereoscopic PIV systemDual-plane stereoscopic PIV system Illumination systemIllumination system

V 5a

8a 7a 7b

8b

5b

10a

Lase

r tu

be 1

Lase

r tub

e

2 Lase

r tu

be 3

Lase

r tu

be 4

9a

6a

Mirror 12

9b

6b

10b

SHG

SHG

Polarizer 13

Mirror 15

Cylinder lens 14

V

VV

V(s) H(p)

V(s)V

H(p)

H(p)

V

V V

V (s)

Double-pulsed Nd:YAG laser set A

Double-pulsed Nd:YAG laser set B



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Velocity field – Lobed NozzleVelocity field – Lobed Nozzle

Three dimensional Three dimensional velocity vectorsvelocity vectors

Isosurface Isosurface velocity vectorsvelocity vectors



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Microgravity measurementsMicrogravity measurements Combustion in MicrogravityCombustion in Microgravity

Courtesy: CNRS OrleansCNRS Orleans


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Microgravity measurementsMicrogravity measurements Combustion in MicrogravityCombustion in Microgravity

Image field Velocity field

Courtesy: CNRS OrleansCNRS Orleans


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Biomedical flowBiomedical flowMeasurements in a simulated heart chamberMeasurements in a simulated heart chamber

Biomedical application(University of Miami)

Biomedical application(University of Miami)

Courtesy: University of MiamiUniversity of Miami


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Rotating MachineryRotating MachineryFlow in a high-speed compressorFlow in a high-speed compressor

Courtesy: NASA - LewisNASA - Lewis


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Rotating MachineryRotating Machinery

Courtesy: NASA - LewisNASA - Lewis


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Rotating machinery flowRotating machinery flow

10 1z

flow

diffuser

12

measurementregion

x

y


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Periodic swirling flowPeriodic swirling flowPhase-locked PIV measurementsPhase-locked PIV measurements

(2D) 01 Jun 1998 e:lisb98loc1loc1AVG.vec

20 40 60X mm

10

20

30

40

50

60

70

Ym

m

Speed2.142.001.861.731.591.451.321.181.040.910.770.630.500.360.220.08



20 30 40 50 60X mm

10

20

30

40

50

60

70

Ym

m

Speed1.061.000.940.870.810.750.680.620.560.490.430.370.300.240.180.11


Average velocity field Z=1

Average velocity field Z=10


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IC EngineIC EnginePowerView PIV MeasurementsPowerView PIV Measurements

Courtesy: MSUMSU


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GDI Internal Combustion GDI Internal Combustion EngineEngine

PowerView PIV MeasurementsPowerView PIV Measurements

Courtesy: MSUMSU


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Flow in an IC EngineFlow in an IC Engine

Courtesy: General MotorsGeneral Motors


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Measurements in an IC EngineMeasurements in an IC Engine


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Helicopter rotor wakeHelicopter rotor wakeStereoPIV measurementsStereoPIV measurements

Courtesy: University of MarylandUniversity of MarylandAerospace EngineeringAerospace Engineering


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Helicopter rotor flowHelicopter rotor flowStereoscopic PIV MeasurementsStereoscopic PIV Measurements



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Helicopter rotor flowHelicopter rotor flowStereoscopic PIV MeasurementsStereoscopic PIV Measurements

x component of velocity Vorticity field



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Measurements in flamesMeasurements in flames

Courtesy: Sandia LabsSandia Labs


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StereoPIV Measurements in a StereoPIV Measurements in a FlameFlame

Han, Su, Menon and Mungal (Lisbon 2000)Han, Su, Menon and Mungal (Lisbon 2000)


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Instantaneous vs. AverageInstantaneous vs. Average



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Lifted-jet FlameLifted-jet FlameStereoscopic PIV MeasurementsStereoscopic PIV Measurements

Center plane Z = 10mm plane

Turbulent kinetic energyTurbulent kinetic energy



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Industrial spray burnerIndustrial spray burnerStereoPIV MeasurementsStereoPIV Measurements

Palero, Ikeda, Nakajima and Shakal (Lisbon 2000)Palero, Ikeda, Nakajima and Shakal (Lisbon 2000)


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Measurements in a PlumeMeasurements in a PlumeUltrahigh resolution PIV MeasurementsUltrahigh resolution PIV Measurements

Courtesy: MITMIT


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Bubbly two-phase flowBubbly two-phase flowTwo-camera ArrangementTwo-camera Arrangement


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Bubbly two-phase flowBubbly two-phase flowTwo-camera ArrangementTwo-camera Arrangement

AirWater


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Flow around a robotic fruit flyFlow around a robotic fruit fly

Courtesy: University of California, BerkeleyUniversity of California, Berkeley


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Pressurized Water ReactorPressurized Water Reactor

Stefanini, Mignot, Saldo, Baroi and Conte (Lisbon 2000)Stefanini, Mignot, Saldo, Baroi and Conte (Lisbon 2000)

CFD Results PIV Measurements

Vorticity field

Velocity field


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Cylindrical Couette FlowCylindrical Couette Flow


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Atmospheric Boundary layer Atmospheric Boundary layer MeasurementsMeasurements

2m x 2m Field of view4 PIVCAM cameras

Courtesy: University of IllinoisUniversity of Illinois


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StereoPIV MeasurementsStereoPIV Measurements

Measuring region Pier

Courtesy: S. Dakota State University


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Flow Behind a cylindrical pierFlow Behind a cylindrical pierStereoscopic PIV MeasurementsStereoscopic PIV Measurements

Courtesy: S. Dakota State University

U component W component


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Measurements in a sprayMeasurements in a spray


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Gravity wavesGravity wavesStereoPIV MeasurementsStereoPIV Measurements

Lengrich, Graw and Kronewetter (Lisbon 2000)


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Channel FlowChannel Flow

0 10 20 30 40 500

5

10

15

20

25

30

35

Courtesy: University of Illinois


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Flow in a cavityFlow in a cavity( 2 D ) 0 4 M a y 1 9 9 7 C A V IT Y 1 . v e c( 2 D ) 0 4 M a y 1 9 9 7 C A V IT Y 1 . v e c

Raw image field Velocity vector field

Courtesy: Sandia Labs


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Swirling Flow in a PipeSwirling Flow in a Pipe


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Measurements in a steady Jet Measurements in a steady Jet FlowFlow


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Sonic jetSonic jet

Courtesy: NASA - Lewis


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Sonic jetSonic jet

(2D) 04May1997nasa.vec

5 10 15 20 25 30 35 40 45 50Xmm

35

40

45

50

55

60

65

70

75

80

Ymm

Speed: 50 100150200250300350400450

(2D) 04May1997nasa.vec

Courtesy: NASA - Lewis


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PIV in Supersonic FlowPIV in Supersonic Flow

Courtesy: ISL

Supersonic Supersonic flow PIV flow PIV

measurementsmeasurements

umax ~ 1400 m/sec

V- component

U - component


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Supersonic JetSupersonic Jet


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Flow field behind a carFlow field behind a car


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Air Flow In a ChamberAir Flow In a Chamber

Air flow in a 62 x 62 cm chamberAir flow in a 62 x 62 cm chamber– Region imaged 60 x 60 cm– Flow seeded using smoke

Flow in

Flow out


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Air flow - Large ChamberAir flow - Large Chamber (60 x 60 cm)(60 x 60 cm)

Magnitude of velocity x- component of velocity

Large Scale Flow Pattern


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PIV Results - Large ChamberPIV Results - Large ChamberAir flowAir flow

w - component of velocity


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PIV MeasurementsPIV Measurements Tank Water flowTank Water flow

Magnitude of velocity x- component of velocity


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PIV MeasurementsPIV Measurements3-component measurements in a channel flow3-component measurements in a channel flow

Vorticity W-component

Khalitov, Longmire and Anderson (1999)


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Underwater Flow Underwater Flow measurementsmeasurements

Courtesy: INSEAN

Underwater CameraUnderwater CameraUnderwater Laser Underwater Laser

Light sheetLight sheet


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Water flow behind a propellerWater flow behind a propellerNear wake: axial velocity fieldNear wake: axial velocity field

Axial velocity field at x = 0.59RAxial velocity field at x = 0.59R Cross flow at x = 0.59RCross flow at x = 0.59R

Courtesy: INSEAN


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Water flow behind a propellerWater flow behind a propeller Wake evolution: Turbulent fieldWake evolution: Turbulent field

X = 0.76 R

X = 1.85 R

X = 0.59 R Courtesy: INSEAN


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Underwater PIVUnderwater PIV


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Flowfield in a fanFlowfield in a fan


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Flowfield in a fan Flowfield in a fan Experimental ArrangementExperimental Arrangement

Camera 1 Camera 2

Volute

Laser

Air flow


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Flowfield in a fan Flowfield in a fan ResultsResults

VelocityVelocity VorticityVorticity


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Flowfield in a fan Flowfield in a fan ResultsResults

vort

vel

Strain rateStrain rate Strain rateStrain rate

tsi incorporated copyright© 2002 tsi incorporated a sample of piv applications

Documents

university of california

mungal lisbon

msutsi incorporatedflow

tsi incorporatedinstantaneous

shakal lisbon

ic enginecourtesy

highspeed compressorcourtesy

robotic fruit flycourtesy