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RESEARCH PAPERS

A Theoretical Investigation of Transonic Flows in Radial Compressor Diffusers

[+] Author and Article Information
H. O. Jeske, I. Teipel

Institute for Mechanics, University of Hannover, West Germany

J. Eng. Power 105(3), 452-456 (Jul 01, 1983) (5 pages) doi:10.1115/1.3227436 History: Received December 15, 1981; Online September 28, 2009

Abstract

The transonic flow in a diffuser of a centrifugal compressor with high pressure ratio has been analyzed by a numerical procedure. The method consists of an inviscid calculation of the pressure field in the vaned diffuser and of a determination of the boundary layer flow along the blades. The diffuser has been equipped with curved vanes, and only the flow through one channel is considered. The two-dimensional pressure distribution has been calculated by a time-dependent finite difference scheme. The boundary layer flow has been determined by different integral methods with special attention concerning the shock-boundary-layer interaction. Finally, the numerical results are compared with experiments, and the agreement is satisfactory.

Copyright © 1983 by ASME
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