Simulations of shock/boundary layer interactions with bleed using immersed boundary methods

Santanu Ghosh, Jung Il Choi, Jack R. Edwards

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

This work utilizes an immersed boundary (IB) method to simulate the effects of arrays of discrete bleed ports in controlling shock wave/turbulent boundary layer interactions. Both Reynolds averaged Navier-Stokes (RANS) and hybrid large-eddy/Reynolds-averaged Navier-Stokes (LES/RANS) turbulence closures are used with the IB technique. The approach is validated by conducting simulations of Mach 2.5 flow over a perforated plate containing 18 individual bleed holes. Predictions of discharge coefficient as a function of bleed plenum pressure are compared with experimental data. Simulations of an impinging oblique shock/boundary layer interaction at Mach 2.45 with and without active bleed control are also performed. The 68-hole bleed plate is rendered as an immersed object in the computational domain. Wall pressure predictions show that, in general, the LES/RANS technique under-estimates the upstream extent of axial separation that occurs in the absence of bleed. Good agreement with Pitot-pressure surveys throughout the interaction region is obtained, however. Active suction completely removes the separation region and induces local disturbances in the wall pressure distributions that are associated with the expansion of the boundary layer fluid into the bleed port and its subsequent re-compression. Predicted Pitot-pressure distributions are in good agreement with experiment for the case with bleed. Swirl strength probability-density distributions are used to estimate the evolution of turbulence length-scales throughout the interaction, and the effects of bleed on the amplification of Reynolds stresses are highlighted. Finally, simple improvements to engineering-level bleed models are proposed based on the computational results.

Original languageEnglish
Title of host publication47th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition
Publication statusPublished - 2009 Dec 1
Event47th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition - Orlando, FL, United States
Duration: 2009 Jan 52009 Jan 8

Publication series

Name47th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition

Other

Other47th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition
CountryUnited States
CityOrlando, FL
Period09/1/509/1/8

Fingerprint

boundary layers
Boundary layers
boundary layer
shock
Pressure distribution
wall pressure
Mach number
Turbulence
pressure distribution
simulation
Perforated plates
turbulence
discharge coefficient
interactions
perforated plates
Shock waves
Amplification
turbulent boundary layer
Reynolds stress
suction

All Science Journal Classification (ASJC) codes

  • Space and Planetary Science
  • Aerospace Engineering

Cite this

Ghosh, S., Choi, J. I., & Edwards, J. R. (2009). Simulations of shock/boundary layer interactions with bleed using immersed boundary methods. In 47th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition [2009-1330] (47th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition).
Ghosh, Santanu ; Choi, Jung Il ; Edwards, Jack R. / Simulations of shock/boundary layer interactions with bleed using immersed boundary methods. 47th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition. 2009. (47th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition).
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title = "Simulations of shock/boundary layer interactions with bleed using immersed boundary methods",
abstract = "This work utilizes an immersed boundary (IB) method to simulate the effects of arrays of discrete bleed ports in controlling shock wave/turbulent boundary layer interactions. Both Reynolds averaged Navier-Stokes (RANS) and hybrid large-eddy/Reynolds-averaged Navier-Stokes (LES/RANS) turbulence closures are used with the IB technique. The approach is validated by conducting simulations of Mach 2.5 flow over a perforated plate containing 18 individual bleed holes. Predictions of discharge coefficient as a function of bleed plenum pressure are compared with experimental data. Simulations of an impinging oblique shock/boundary layer interaction at Mach 2.45 with and without active bleed control are also performed. The 68-hole bleed plate is rendered as an immersed object in the computational domain. Wall pressure predictions show that, in general, the LES/RANS technique under-estimates the upstream extent of axial separation that occurs in the absence of bleed. Good agreement with Pitot-pressure surveys throughout the interaction region is obtained, however. Active suction completely removes the separation region and induces local disturbances in the wall pressure distributions that are associated with the expansion of the boundary layer fluid into the bleed port and its subsequent re-compression. Predicted Pitot-pressure distributions are in good agreement with experiment for the case with bleed. Swirl strength probability-density distributions are used to estimate the evolution of turbulence length-scales throughout the interaction, and the effects of bleed on the amplification of Reynolds stresses are highlighted. Finally, simple improvements to engineering-level bleed models are proposed based on the computational results.",
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Ghosh, S, Choi, JI & Edwards, JR 2009, Simulations of shock/boundary layer interactions with bleed using immersed boundary methods. in 47th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition., 2009-1330, 47th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition, 47th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition, Orlando, FL, United States, 09/1/5.

Simulations of shock/boundary layer interactions with bleed using immersed boundary methods. / Ghosh, Santanu; Choi, Jung Il; Edwards, Jack R.

47th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition. 2009. 2009-1330 (47th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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N2 - This work utilizes an immersed boundary (IB) method to simulate the effects of arrays of discrete bleed ports in controlling shock wave/turbulent boundary layer interactions. Both Reynolds averaged Navier-Stokes (RANS) and hybrid large-eddy/Reynolds-averaged Navier-Stokes (LES/RANS) turbulence closures are used with the IB technique. The approach is validated by conducting simulations of Mach 2.5 flow over a perforated plate containing 18 individual bleed holes. Predictions of discharge coefficient as a function of bleed plenum pressure are compared with experimental data. Simulations of an impinging oblique shock/boundary layer interaction at Mach 2.45 with and without active bleed control are also performed. The 68-hole bleed plate is rendered as an immersed object in the computational domain. Wall pressure predictions show that, in general, the LES/RANS technique under-estimates the upstream extent of axial separation that occurs in the absence of bleed. Good agreement with Pitot-pressure surveys throughout the interaction region is obtained, however. Active suction completely removes the separation region and induces local disturbances in the wall pressure distributions that are associated with the expansion of the boundary layer fluid into the bleed port and its subsequent re-compression. Predicted Pitot-pressure distributions are in good agreement with experiment for the case with bleed. Swirl strength probability-density distributions are used to estimate the evolution of turbulence length-scales throughout the interaction, and the effects of bleed on the amplification of Reynolds stresses are highlighted. Finally, simple improvements to engineering-level bleed models are proposed based on the computational results.

AB - This work utilizes an immersed boundary (IB) method to simulate the effects of arrays of discrete bleed ports in controlling shock wave/turbulent boundary layer interactions. Both Reynolds averaged Navier-Stokes (RANS) and hybrid large-eddy/Reynolds-averaged Navier-Stokes (LES/RANS) turbulence closures are used with the IB technique. The approach is validated by conducting simulations of Mach 2.5 flow over a perforated plate containing 18 individual bleed holes. Predictions of discharge coefficient as a function of bleed plenum pressure are compared with experimental data. Simulations of an impinging oblique shock/boundary layer interaction at Mach 2.45 with and without active bleed control are also performed. The 68-hole bleed plate is rendered as an immersed object in the computational domain. Wall pressure predictions show that, in general, the LES/RANS technique under-estimates the upstream extent of axial separation that occurs in the absence of bleed. Good agreement with Pitot-pressure surveys throughout the interaction region is obtained, however. Active suction completely removes the separation region and induces local disturbances in the wall pressure distributions that are associated with the expansion of the boundary layer fluid into the bleed port and its subsequent re-compression. Predicted Pitot-pressure distributions are in good agreement with experiment for the case with bleed. Swirl strength probability-density distributions are used to estimate the evolution of turbulence length-scales throughout the interaction, and the effects of bleed on the amplification of Reynolds stresses are highlighted. Finally, simple improvements to engineering-level bleed models are proposed based on the computational results.

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M3 - Conference contribution

AN - SCOPUS:78549289889

SN - 9781563479694

T3 - 47th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition

BT - 47th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition

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Ghosh S, Choi JI, Edwards JR. Simulations of shock/boundary layer interactions with bleed using immersed boundary methods. In 47th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition. 2009. 2009-1330. (47th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition).