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A Study on the Reduction of Supersonic Cavity Pressure Oscillations Using a Sub-Cavity System  

Shin, Choon-Sik (안동대학교 기계공학과)
Jeong, June-Chang (국방기술품질원)
Suryan, Abhilash (안동대학교 기계공학과)
Kim, Heuy-Dong (안동대학교 기계공학과)
Publication Information
Journal of the Korean Society of Propulsion Engineers / v.13, no.5, 2009 , pp. 41-47 More about this Journal
Abstract
Numerical computations were carried out to analyze the effect of a sub-cavity at several inlet Mach numbers on the control of cavity-induced pressure oscillations in two-dimensional supersonic flow. The present passive control method, the sub-cavity applied to the front wall of a square cavity, was studied for the inlet Mach numbers of 1.50, 1.83 and 2.50. The results show that the sub-cavity is effective in reducing the oscillations, and a resultant amount of the reduction depended on the inlet Mach number, the length of flat plate, and the depth of sub-cavity used as an oscillation suppressor.
Keywords
Compressible flow; Supersonic cavity; Pressure oscillations; Passive control; Shock wave;
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