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REVIEW ARTICLES

Spatial Coherence in the Wake of a Flat Plate

[+] Author and Article Information
José B. Dávila

General Engineering Department, University of Puerto Rico, Mayagüez PR 00681

Muhammad R. Hajj

Department of Engineering Science and Mechanics, Virginia Polytechnic Institute, Blacksburg VA 24061

Richard W. Miksad

School of Engineering and Applied Science, University of Virginia, Charlottesville VA 22903

Edward J. Powers

Department of Electrical Engineering and Computer Science, University of Texas, Austin TX 78712

Appl. Mech. Rev 50(11S), S36-S38 (Nov 01, 1997) doi:10.1115/1.3101846 History: Online April 20, 2009

Abstract

Spatial coherence of the streamwise velocity fluctuation was measured in the wake of a flat plate in a wind tunnel. The measurements were made in the context of determining the role of wavenumber resonance in quadratic interactions among resonant frequency modes. Frequency domain results show that sum-interaction modes targeted by coupled mode pairs are spatially coherent. This suggests that spatial coherence measurements can be combined with bispectral measurements to determine mode energy transit and direction.

Copyright © 1997 by American Society of Mechanical Engineers
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