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RESEARCH PAPERS

Effect of an Oscillating Free Stream on the Unsteady Pressure on a Circular Cylinder

[+] Author and Article Information
H. M. Hatfield, M. V. Morkovin

Department of Mechanics and Mechanical and Aerospace Engineering, Illinois Institute of Technology, Chicago, Ill.

J. Fluids Eng 95(2), 249-252 (Jun 01, 1973) (4 pages) doi:10.1115/1.3447005 History: Received June 09, 1972; Online October 12, 2010

Abstract

An experimental investigation was made of the unsteady pressure on a circular cylinder in a free stream of constant and oscillating velocity. Consideration of possible resonant coupling mechanisms between the Karman vortex street fluctuations and free-stream velocity oscillations showed such coupling to, be insignificant. The frequency of the vortex street fluctuations scales with the mean velocity for high frequency (30 to 50 Hz at mean velocity of 40 fps) oscillation of the free stream.

Copyright © 1973 by ASME
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