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TECHNICAL BRIEFS

Shear Effects in Hot-Wire Measurements

[+] Author and Article Information
Ronald M. C. So

Rutgers University, New Brunswick, N. J.

J. Fluids Eng 98(4), 771-773 (Dec 01, 1976) (3 pages) doi:10.1115/1.3448481 History: Received September 21, 1976; Online October 12, 2010

Abstract

When a circular cylinder is placed in a two-dimensional shear flow, a lift force is experienced by the cylinder. In the case of hot-wire measurements in the viscous sublayer, this will give rise to a displacement of the wire from its true position. The resultant measurements are found to be in error if the wire length to diameter ratio is > 300 and the shear gradient of the flow is large.

Copyright © 1976 by ASME
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