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RESEARCH PAPERS

Combined Simultaneous Flow Visualization/Hot-Wire Anemometry for the Study of Turbulent Flows

[+] Author and Article Information
R. E. Falco

Department of Mechanical Engineering, Michigan State University, East Lansing, Mich. 48824

J. Fluids Eng 102(2), 174-182 (Jun 01, 1980) (9 pages) doi:10.1115/1.3240641 History: Received July 11, 1978; Online October 26, 2009

Abstract

The measurement of coherent motions in turbulent and unsteady flows is discussed. A technique which discriminates these motions based upon the patterns they create by scattering light from a fog of tiny oil drops is described. It is shown that hot-wire anemometry can be used in this oil fog so that hot-wire data can be conditionally sampled to the visual patterns, giving directly interpretable measures of the importance of the selected features. The three-dimensionality of the coherent motions can also be directly accounted for, using mutually orthogonal sheets of light. Results of step flows, and zero and favorable pressure gradient flows are described.

Copyright © 1980 by ASME
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