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On stability of strong and weak reflected shocks |
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| Authors: | S. Mölder E.V. Timofeev C.G. Dunham S. McKinley P.A. Voinovich |
| Affiliation: | (1) School of Aerospace Engineering, Ryerson Polytechnic University, Toronto M5B 2K3, Canada, CA;(2) Shock Wave Research Center, Institute of Fluid Science, Tohoku University, Sendai 980-8577, Japan, JP;(3) Advanced Technology Center, P.O. Box 29, St. Petersburg 194156, Russia, RU |
| Abstract: | A time-realistic adaptive unstructured Euler code is used to demonstrate the numerical existence and investigate the stability of both weak and strong reflected shocks in regular reflection. For supersonic parallel flow in a channel, impinging on two symmetrical opposing wedges, the weak reflected configuration is insensitive to downstream pressure disturbances and therefore stable. The strong reflected shock configuration is unstable to positive perturbations in back-pressure and neutrally stable to negative perturbations. A unique -shock structure provides the transition mechanism between weak and strong reflected shock configurations. Received 6 September 1999 / Accepted 10 August 2000 |
| Keywords: | : Stability Strong and weak shocks Regular reflection CFD simulation |
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