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RESEARCH PAPERS

An Experimental Investigation of Flow Unsteadiness Generated by Transitory Stall In Plane-Wall Diffusers

[+] Author and Article Information
C. R. Smith

Department of Mechanical Engineering and Mechanics, Lehigh University, Bethlehem, Pa. 18015

J. L. Layne

Cummins Engine, Columbus, Ind.

J. Fluids Eng 101(2), 181-185 (Jun 01, 1979) (5 pages) doi:10.1115/1.3448931 History: Received October 03, 1978; Online October 12, 2010

Abstract

The effects of flow unsteadiness introduced by transitory stall in plane-wall, subsonic diffusers have been investigated using air as the working fluid. The results indicate that diffuser flow unsteadiness is basically a low frequency phenomenon which appears to be a direct function of time varying stall blockage in the diffuser. Quantitative correlation of unsteadiness as a function of geometry indicates that diffuser unsteadiness behaves systematically and that a geometric region of maximum unsteadiness is definable.

Copyright © 1979 by ASME
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