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A numerical study of vortex shedding from rectangles

Published online by Cambridge University Press:  20 April 2006

R. W. Davis  and
E. F. Moore
R. W. Davis
Affiliation:
Fluid Engineering Division, National Bureau of Standards, Washington, D.C. 20234, U.S.A.
E. F. Moore
Affiliation:
Fluid Engineering Division, National Bureau of Standards, Washington, D.C. 20234, U.S.A.
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Abstract

The purpose of this paper is to present numerical solutions for two-dimensional time-dependent flow about rectangles in infinite domains. The numerical method utilizes third-order upwind differencing for convection and a Leith type of temporal differencing. An attempted use of a lower-order scheme and its inadequacies are also described. The Reynolds-number regime investigated is from 100 to 2800. Other parameters that are varied are upstream velocity profile, angle of attack, and rectangle dimensions. The initiation and subsequent development of the vortex-shedding phenomenon is investigated. Passive marker particles provide an exceptional visualization of the evolution of the vortices both during and after they are shed. The properties of these vortices are found to be strongly dependent on Reynolds number, as are lift, drag, and Strouhal number. Computed Strouhal numbers compare well with those obtained from a wind-tunnel test for Reynolds numbers below 1000.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 116 , March 1982 , pp. 475 - 506
Copyright
© 1982 Cambridge University Press

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