JOURNAL OF THE FLOW VISUALIZATION SOCIETY OF JAPAN
Online ISSN : 1884-0361
Print ISSN : 0287-3605
ISSN-L : 0287-3605
Diffusion and Concentration of Vorticity in the Wake
Muneshige OKUDETatsuya MATSUI
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1988 Volume 8 Issue Supplement Pages 161-164

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Abstract
The correlation between the flow patterns visualized and the results obtained from the hot-wire probe was investigated with the wakes both behind a circular cylinder and a flat plate at zero incidence in a low speed wind tunnel.
The flow patterns for both cases seem to show the downstream increase in the size of vortices, but not always their growth. The vorticity in each vortex diffuses and its circulation decreases downstream in the wake of a circular cylinder. On the contrary, the vorticity concentrates and the circulation increases downstream in the wake of a flat plate.
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© The Visualization Society of Japan
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