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Some new aspects of the shock-wave/boundary-layer interaction in compression-ramp flows

Published online by Cambridge University Press:  21 April 2006

J. Andreopoulos  and
K. C. Muck
J. Andreopoulos
Affiliation:
Gas Dynamics Laboratory, Mechanical and Aerospace Engineering Department, Princeton University, Princeton, NJ 08544, USA Present address: Department of Mechanical Engineering, City College of the City University of New York, New York, NY 10031, USA.
K. C. Muck
Affiliation:
Gas Dynamics Laboratory, Mechanical and Aerospace Engineering Department, Princeton University, Princeton, NJ 08544, USA Present address: Department of Mechanical Engineering, University of Maryland. Mail Stop: Center for Fire Research, National Bureau of Standards, Gaithersburg, MD 20899, USA.
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Abstract

The present study of the pressure fluctuations in the interaction region oif a two-dimensionals compression flow established that the frequency of the shock-wave unsteadiness is of the same order as the bursting frequency of the upstream boundary layer and that this frequency is independent of the downstream separated flow. The conditional-sampling technique developed herein is capable of separating phenomena due to shock-wave oscillations from those due to transport phenomena of turbulence. The results show that turbulence as inferred from wall-pressure fluctuations may be significantly amplified approaching the shock.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 180 , July 1987 , pp. 405 - 428
Copyright
© 1987 Cambridge University Press

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