Computational and Experimental Investigation of Supersonic Flow and their Controls
Supersonic open and closed cavity flows are investigated experimentally and computationally. Free stream Mach number of two is set. Schlieren imaging is used to visualise the flow behaviour showing stark differences between open and closed. Computational Fluid Dynamics (CFD) is used to simulate open cavity of flow with aspect ratio of 4. A rear wall treatment is implemented in order to pursue a simple passive control approach. Good qualitative agreement is achieved between the experimental flow visualisation and the CFD in terms of the expansion-shock waves system. The cavity oscillations are shown to be dominated by the first and third Rossister modes combining to high fluctuations of non-linear nature above the cavity rear edge. A simple rear wall treatment in terms of a hole shows mixed effect on the flow oscillations, RMS contours, and time history density fluctuations are given and analysed.
[1] Krishnamurty, K., ÔÇÿAcoustic radiation from two-dimensional rectangular
cutouts in aerodynamic surfaces-, National Advisory Committee for
Aeronautics (N.A.C.A.) Technical Note 3487, 1955.
[2] Tam, C. K. W. and Block, P. J. W., ÔÇÿOn the Tones and Pressure
Oscillations Induced by Flow over Rectangular Cavities-, Journal of
Fluid Mechanics, 89: 373-99, 1978.
[3] Rockwell, D. and Naudascher, E., ÔÇÿSelf-Sustained Oscillations of
Impinging Free Shear Layers-, Annual Review of Fluid Mechanics, 11:
67-94, 1979.
[4] Dellprat, N., ÔÇÿRossiters formula- A simple spectral model for a complex
amplitude modulation process?-, Physics of Fluids, 18, 7, 2006.
[5] Tracy, M. B., Plentovich, E. B., Chu, J. and Langley Research Centre,
ÔÇÿMeasurements of fluctuating pressure in a rectangular cavity in
transonic flow at High Reynolds numbers-, National Aeronautics and
Space Administration (NASA) Technical Memorandum 4363, 1992
[6] Suponitsky, V., Avital, E. and Gaster, M., ÔÇÿOn three-dimensionality and
control of incompressible cavity flow-, Physics of Fluid, 17, 104103,
2005.
[7] Rowley, C. W., Colonius, T. and Basu, A. J., ÔÇÿOn self-sustained
oscillations in two-dimensional compressible flow over rectangular
cavities. Journal of Fluid Mechanics, 455: 315-346, 2002.
[8] Heller, H. H. And Bliss, D. B., ÔÇÿAerodynamically Induced Pressure
Oscillations in Cavities - Physical Mechanisms and Suppression
Concepts-, Air Force Flight Dynamics Laboratory Technical Report
AFFDL-TR-74-133, 1975.
[9] William, D. R., Cornelius, D. and Rowley, C. W., ÔÇÿSupersonic Cavity
Response to Open-Loop Forcing-, Active Flow Control, 95: 230-43,
2007.
[10] Mohri, K. & Hiller, R. Computational and experimental study of
supersonic flow over axisymmetric cavities. Shock Waves, 21, 175-191,
2011.
[11] Delprat, N., ÔÇÿRossiter-s formula: A simple spectral model for a complex
amplitude modulation process?-, Fluids of Physics, 18, 2006.
[12] Williams, D. R. and Rowley, C. W., ÔÇÿRecent Progress in Closed-Loop
Control of Cavity Tones-, AIAA paper 2006-0712, 44th Aerospace
Sciences Meeting and Exhibit, Reno, Nevada, USA, 2006.
[13] Punekar J., Avital EJ and Musafir RE, Computations of Nonlinear
Propagation of Sound Emitted from High Speed Mixing Layers, Open
Acoustics Journal 3, 11-20, 2010.
[14] Hirsch C, Numerical computation of internal and external flows, vol. 2,
Computational methods for inviscid and viscous flows, 1John Wiley &
Sons 1992.
[15] Avital EJ, Musafir RE and Korakianitis T, Nonlinear Propagation of
Sound Emitted by High Speed Wave Packets, Journal of Computational.
Acoustics in press.
[1] Krishnamurty, K., ÔÇÿAcoustic radiation from two-dimensional rectangular
cutouts in aerodynamic surfaces-, National Advisory Committee for
Aeronautics (N.A.C.A.) Technical Note 3487, 1955.
[2] Tam, C. K. W. and Block, P. J. W., ÔÇÿOn the Tones and Pressure
Oscillations Induced by Flow over Rectangular Cavities-, Journal of
Fluid Mechanics, 89: 373-99, 1978.
[3] Rockwell, D. and Naudascher, E., ÔÇÿSelf-Sustained Oscillations of
Impinging Free Shear Layers-, Annual Review of Fluid Mechanics, 11:
67-94, 1979.
[4] Dellprat, N., ÔÇÿRossiters formula- A simple spectral model for a complex
amplitude modulation process?-, Physics of Fluids, 18, 7, 2006.
[5] Tracy, M. B., Plentovich, E. B., Chu, J. and Langley Research Centre,
ÔÇÿMeasurements of fluctuating pressure in a rectangular cavity in
transonic flow at High Reynolds numbers-, National Aeronautics and
Space Administration (NASA) Technical Memorandum 4363, 1992
[6] Suponitsky, V., Avital, E. and Gaster, M., ÔÇÿOn three-dimensionality and
control of incompressible cavity flow-, Physics of Fluid, 17, 104103,
2005.
[7] Rowley, C. W., Colonius, T. and Basu, A. J., ÔÇÿOn self-sustained
oscillations in two-dimensional compressible flow over rectangular
cavities. Journal of Fluid Mechanics, 455: 315-346, 2002.
[8] Heller, H. H. And Bliss, D. B., ÔÇÿAerodynamically Induced Pressure
Oscillations in Cavities - Physical Mechanisms and Suppression
Concepts-, Air Force Flight Dynamics Laboratory Technical Report
AFFDL-TR-74-133, 1975.
[9] William, D. R., Cornelius, D. and Rowley, C. W., ÔÇÿSupersonic Cavity
Response to Open-Loop Forcing-, Active Flow Control, 95: 230-43,
2007.
[10] Mohri, K. & Hiller, R. Computational and experimental study of
supersonic flow over axisymmetric cavities. Shock Waves, 21, 175-191,
2011.
[11] Delprat, N., ÔÇÿRossiter-s formula: A simple spectral model for a complex
amplitude modulation process?-, Fluids of Physics, 18, 2006.
[12] Williams, D. R. and Rowley, C. W., ÔÇÿRecent Progress in Closed-Loop
Control of Cavity Tones-, AIAA paper 2006-0712, 44th Aerospace
Sciences Meeting and Exhibit, Reno, Nevada, USA, 2006.
[13] Punekar J., Avital EJ and Musafir RE, Computations of Nonlinear
Propagation of Sound Emitted from High Speed Mixing Layers, Open
Acoustics Journal 3, 11-20, 2010.
[14] Hirsch C, Numerical computation of internal and external flows, vol. 2,
Computational methods for inviscid and viscous flows, 1John Wiley &
Sons 1992.
[15] Avital EJ, Musafir RE and Korakianitis T, Nonlinear Propagation of
Sound Emitted by High Speed Wave Packets, Journal of Computational.
Acoustics in press.
@article{"International Journal of Engineering, Mathematical and Physical Sciences:59908", author = "Vasana M. Don and Eldad J. Avital and Fariborz Motallebi", title = "Computational and Experimental Investigation of Supersonic Flow and their Controls", abstract = "Supersonic open and closed cavity flows are investigated experimentally and computationally. Free stream Mach number of two is set. Schlieren imaging is used to visualise the flow behaviour showing stark differences between open and closed. Computational Fluid Dynamics (CFD) is used to simulate open cavity of flow with aspect ratio of 4. A rear wall treatment is implemented in order to pursue a simple passive control approach. Good qualitative agreement is achieved between the experimental flow visualisation and the CFD in terms of the expansion-shock waves system. The cavity oscillations are shown to be dominated by the first and third Rossister modes combining to high fluctuations of non-linear nature above the cavity rear edge. A simple rear wall treatment in terms of a hole shows mixed effect on the flow oscillations, RMS contours, and time history density fluctuations are given and analysed.
", keywords = "Supersonic, Schlieren, open-cavity, flow simulation,passive control.", volume = "7", number = "1", pages = "93-6", }
