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RESEARCH PAPERS

Feedback Control of Karman Vortex Shedding

[+] Author and Article Information
M. D. Gunzburger

Interdisciplinary Center for Applied Mathematics, Virginia Tech., Blackburg, VA 24061-0531

H. C. Lee

Department of Mathematics, University of California, Irvine, CA 92717

J. Appl. Mech 63(3), 828-835 (Sep 01, 1996) (8 pages) doi:10.1115/1.2823369 History: Received March 10, 1995; Revised June 27, 1995; Online December 04, 2007

Abstract

A computational study of the feedback control of the magnitude of the lift in flow around a cylinder is presented. The uncontrolled flow exhibits an unsymmetric Karman vortex street and a periodic lift coefficient. The size of the oscillations in the lift is reduced through an active feedback control system. The control used is the injection and suction of fluid through orifices on the cylinder; the amount of fluid injected or sucked is determined, through a simple feedback law, from pressure measurements at stations along the surface of the cylinder. The results of some computational experiments are given; these indicate that the simple feedback law used is effective in reducing the size of the oscillations in the lift.

Copyright © 1996 by The American Society of Mechanical Engineers
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