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Global dynamics and aerodynamic flow vectoring of wakes

Published online by Cambridge University Press:  10 May 1997

D. A. HAMMOND  and
L. G. REDEKOPP
D. A. HAMMOND
Affiliation:
Department of Aerospace Engineering, University of Southern California, Los Angeles, CA 90089–1191, USA
L. G. REDEKOPP
Affiliation:
Department of Aerospace Engineering, University of Southern California, Los Angeles, CA 90089–1191, USA
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Abstract

A methodology for vectoring the near-wake flow behind a bluff body without any mechanical movement of the physical boundaries of the generating body is described. The sole control input is suction applied at the fixed base of the forebody. Once the suction volume flux exceeds a critical value needed to suppress the global dynamics associated with vortex shedding, local directional control of the near wake can be achieved. The distribution of suction velocities across the base can be varied to obtain proportional directional control. The role of symmetries in stimulating aerodynamic vectoring of a streaming flow is emphasized and illustrated.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 338 , 10 May 1997 , pp. 231 - 248
Copyright
© 1997 Cambridge University Press

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