Active control of compressible flows on a curved surfaceThe effect of localized, time periodic surface heating and cooling over a curved surface is studied. This is a mechanism for the active control of unstable disturbances by phase cancellation and reinforcement. It is shown that the pressure gradient induced by the curvature significantly enhances the effectiveness of this form of active control. In particular, by appropriate choice of phase, active surface heating can completely stabilize an unstable wave.
Document ID
19860053610
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Maestrello, L. (NASA Langley Research Center Hampton, VA, United States)
Bayliss, A. (Exxon Corporate Research Science Laboratories, Annandale, NJ, United States)
Parikh, P. (Vigyan Research Associates, Inc. Hampton, VA, United States)
Turkel, E. (NASA Langley Research Center; Institute for Computer Applications in Science and Engineering, Hampton, VA; Tel Aviv University Israel)