Numericl Analysis Supersonic Cavity Unsteady Flow


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The computational analysis was performed of self-sustained oscillatory flow over the open cavity driven by a shear layer at flight Mach 5.0 condition with the solution of the Reynolds-averaged Navier-Stokes equations with a two-equation turbulence model. The self-sustained oscillation cycle of the open ramp cavity was got by simulation. It is found that the self-sustained oscillation feature of the cavity was complex flow. The shear layer rolls up and forms a vortex that grows in strength as the fluid enters the cavity. The amplitude of the pressure oscillation on the aft wall is much higher than that at the other wall due to the mass entrainment and ejection mechanism along the aft wall. This periodic mass addition and expulsion could be critical to the fuel and air mixing and flame-holding in the scramjet engine applications.



Edited by:

Wu Fan




O. Z. Liu and J. S. Cai, "Numericl Analysis Supersonic Cavity Unsteady Flow", Applied Mechanics and Materials, Vols. 110-116, pp. 783-789, 2012

Online since:

October 2011




[1] Vinagradov, V., Grachev, V., and Petrov, M., et al., Experimental Investigation of 2-D Dual Mode Scramjet with Hydrogen Fuel at Mach 4-6[R], AIAA 90-5269.

[2] Yu, K. H., Wilson, K. J., and Schadow, K. C., . Effect of Flame-Holding Cavities on Supersonic-Combustion Performance,. Journal of Propulsion and Power, Vol. 17, No. 6, 2001, p.1287.


[3] Ben-Yakar, A., and Hanson, R. K., . Cavity Flame-Holders in Ignition and Flame Stabilization in Scramjets: An Overview, Journal of Propulsion and Power, Vol. 17, No. 4, 2001, pp.869-877.


[4] Stallings, R.L., Jr. and Wilcox, F.J., Jr., Experimental Cavity Pressure Distributions at Supersonic Speeds[R], NASA TP-2683, (1987).

[5] Zhang, X., Rona, A. and Edwards, J. A., The Effect of trailing edge geometry on cavity flow Oscillation Driven by a Supersonic Shear Layer [J], Aeronautical Journal, 1998, pp: 129~136.

[6] Gangwar, A., Lukovic, B., and Orkwis, P., et al., Modeling Unsteadiess in Steady Cavity Simulations Part I: Parametric Solutions[R], AIAA 2001-0153.


[7] Hou, Z. X , Yi, S. H , Wang, C.R., Numerical analysis of supersonic open cavity [J], Journal of Propulsion Technology(in Chinese), Vol. 22, No. 5, 2001, pp: 400~403.

[8] Sun, M. B. Wang, H. B. Bai, X. S. Wang, Z. G., Experimental and Numerical Study on Flame Stabilization in a Supersonic Combustor with Hydrogen Injection Upstream of Cavity Flameholders[R], 2009, AIAA 2009-5187.


[9] Zhang, X., and Edwards, J. A., An Investigation of Supersonic Oscillatory Cavity Flows Driven by Thick Shear Layers [J], Aeronautical Journal, 1990, pp: 355~364.

[10] Murray, R. C., and Elliott, G. S., Characteristics of the Compressible Shear Layer over a Cavity[J], AIAA Journal, Vol. 39, No. 5, 2001, pp.846-856.


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