Decreasing the Side Wall Contamination in Wind Tunnels

[+] Author and Article Information
T. Motohashi, R. F. Blackwelder

Department of Aerospace Engineering, University of Southern California, Los Angeles, Calif. 90089-1454

J. Fluids Eng 105(4), 435-438 (Dec 01, 1983) (4 pages) doi:10.1115/1.3241025 History: Received November 24, 1982; Online October 26, 2009


To study boundary layers in the transitional Reynolds number regime, the useful spanwise and streamwise extent of wind tunnels is often limited by turbulent fluid emanating from the side walls. Some or all of the turbulent fluid can be removed by sucking fluid out at the corners, as suggested by Amini [1]. It is shown that by optimizing the suction slot width, the side wall contamination can be dramatically decreased without a concomitant three-dimensional distortion of the laminar boundary layer.

Copyright © 1983 by ASME
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