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Vortex Wakes of Bluff Cylinders in Shear Flow

W. A. Mair and P. K. Stansby
SIAM Journal on Applied Mathematics
Vol. 28, No. 2 (Mar., 1975), pp. 519-540
Stable URL: http://www.jstor.org/stable/2100559
Page Count: 22
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Vortex Wakes of Bluff Cylinders in Shear Flow
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Abstract

A curved gauze was used to produce a shear flow in a wind tunnel, with a nearly linear variation of velocity across the working section. Experiments were made with cylinders of circular and other bluff section spanning the wind tunnel, with their axes normal to the vorticity vector. Measurements of the frequency of vortex shedding in the wake showed a number of "cells" across the span of the cylinder, each with a different frequency. The flows were strongly influenced by the boundaries at the ends of the cylinders, and with some forms of end plate, the positions of the cell boundaries fluctuated with time.

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