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RESEARCH PAPERS

Mean Flow Downstream of Two-Dimensional Roughness Elements

[+] Author and Article Information
E. Logan

Mechanical and Aerospace Engineering Department, Arizona State University, Tempe, Ariz. 85287

P. Phataraphruk

Structure and Dynamics Group, Allied Signal Aerospace Company, Fluid Systems Division, Tempe, Ariz.

J. Fluids Eng 111(2), 149-153 (Jun 01, 1989) (5 pages) doi:10.1115/1.3243615 History: Received September 18, 1987; Revised November 15, 1988; Online October 26, 2009

Abstract

The response of a fully developed pipe flow to wall mounted roughness elements of rectangular cross section was investigated experimentally using a probe with a single hot-wire. Four heights of rectangular, ring-type elements were installed rigidly in a 63.5-mm diameter, smooth-walled, circular pipe in which air was flowing at a Reynolds number of 50,000. After passing over the roughness element, the flow recovery occurred in three stages. The three flow regions are delineated, and the velocity profiles for each are correlated.

Copyright © 1989 by ASME
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