LDV Measurement and navier-stokes computation of parallel jet mixing in a rectangular confinement

Robert F. Kunz, Stephen W. D'Amico, Peter F. Vassallo, Michael A. Zaccaria, Hakan Aksoy, Ronald M.C. So

Research output: Contribution to conferencePaper

Abstract

Laser Doppler Vclocimetry (LDV) measurements were taken in a rectangular confinement into which issues a row of parallel jets. Two-component measurements were taken with two optics orientations yielding three mean velocity components and four Reynolds stress components. As observed in isolated three dimensional wall bounded jets, the transverse diffusion of the jets is quite large. The data indicates that this rapid mixing process is due to strong secondary flows, transport of large inlet intensities and Reynolds stress anisotropy effects. Navier-Stokes analyses of this configuration underpredict the rate of transverse jet diffusion. Detailed numerical accuracy studies show that this is attributed to shortcomings in low-Reynolds number two-equation tuibulence modelling. A low-Reynolds number full-Reynolds stress model is shown to provide improvement.

Original languageEnglish (US)
Pages1-9
Number of pages9
StatePublished - Jan 1 1995
EventFluid Dynamics Conference, 1995 - San Diego, United States
Duration: Jun 19 1995Jun 22 1995

Other

OtherFluid Dynamics Conference, 1995
CountryUnited States
CitySan Diego
Period6/19/956/22/95

Fingerprint

Lasers
Reynolds number
Secondary flow
Optics
Anisotropy

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes
  • Energy Engineering and Power Technology

Cite this

Kunz, R. F., D'Amico, S. W., Vassallo, P. F., Zaccaria, M. A., Aksoy, H., & So, R. M. C. (1995). LDV Measurement and navier-stokes computation of parallel jet mixing in a rectangular confinement. 1-9. Paper presented at Fluid Dynamics Conference, 1995, San Diego, United States.
Kunz, Robert F. ; D'Amico, Stephen W. ; Vassallo, Peter F. ; Zaccaria, Michael A. ; Aksoy, Hakan ; So, Ronald M.C. / LDV Measurement and navier-stokes computation of parallel jet mixing in a rectangular confinement. Paper presented at Fluid Dynamics Conference, 1995, San Diego, United States.9 p.
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abstract = "Laser Doppler Vclocimetry (LDV) measurements were taken in a rectangular confinement into which issues a row of parallel jets. Two-component measurements were taken with two optics orientations yielding three mean velocity components and four Reynolds stress components. As observed in isolated three dimensional wall bounded jets, the transverse diffusion of the jets is quite large. The data indicates that this rapid mixing process is due to strong secondary flows, transport of large inlet intensities and Reynolds stress anisotropy effects. Navier-Stokes analyses of this configuration underpredict the rate of transverse jet diffusion. Detailed numerical accuracy studies show that this is attributed to shortcomings in low-Reynolds number two-equation tuibulence modelling. A low-Reynolds number full-Reynolds stress model is shown to provide improvement.",
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Kunz, RF, D'Amico, SW, Vassallo, PF, Zaccaria, MA, Aksoy, H & So, RMC 1995, 'LDV Measurement and navier-stokes computation of parallel jet mixing in a rectangular confinement', Paper presented at Fluid Dynamics Conference, 1995, San Diego, United States, 6/19/95 - 6/22/95 pp. 1-9.

LDV Measurement and navier-stokes computation of parallel jet mixing in a rectangular confinement. / Kunz, Robert F.; D'Amico, Stephen W.; Vassallo, Peter F.; Zaccaria, Michael A.; Aksoy, Hakan; So, Ronald M.C.

1995. 1-9 Paper presented at Fluid Dynamics Conference, 1995, San Diego, United States.

Research output: Contribution to conferencePaper

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T1 - LDV Measurement and navier-stokes computation of parallel jet mixing in a rectangular confinement

AU - Kunz, Robert F.

AU - D'Amico, Stephen W.

AU - Vassallo, Peter F.

AU - Zaccaria, Michael A.

AU - Aksoy, Hakan

AU - So, Ronald M.C.

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N2 - Laser Doppler Vclocimetry (LDV) measurements were taken in a rectangular confinement into which issues a row of parallel jets. Two-component measurements were taken with two optics orientations yielding three mean velocity components and four Reynolds stress components. As observed in isolated three dimensional wall bounded jets, the transverse diffusion of the jets is quite large. The data indicates that this rapid mixing process is due to strong secondary flows, transport of large inlet intensities and Reynolds stress anisotropy effects. Navier-Stokes analyses of this configuration underpredict the rate of transverse jet diffusion. Detailed numerical accuracy studies show that this is attributed to shortcomings in low-Reynolds number two-equation tuibulence modelling. A low-Reynolds number full-Reynolds stress model is shown to provide improvement.

AB - Laser Doppler Vclocimetry (LDV) measurements were taken in a rectangular confinement into which issues a row of parallel jets. Two-component measurements were taken with two optics orientations yielding three mean velocity components and four Reynolds stress components. As observed in isolated three dimensional wall bounded jets, the transverse diffusion of the jets is quite large. The data indicates that this rapid mixing process is due to strong secondary flows, transport of large inlet intensities and Reynolds stress anisotropy effects. Navier-Stokes analyses of this configuration underpredict the rate of transverse jet diffusion. Detailed numerical accuracy studies show that this is attributed to shortcomings in low-Reynolds number two-equation tuibulence modelling. A low-Reynolds number full-Reynolds stress model is shown to provide improvement.

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Kunz RF, D'Amico SW, Vassallo PF, Zaccaria MA, Aksoy H, So RMC. LDV Measurement and navier-stokes computation of parallel jet mixing in a rectangular confinement. 1995. Paper presented at Fluid Dynamics Conference, 1995, San Diego, United States.