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RESEARCH PAPERS

Unsteady Flow Within Centrifugal Compressor Channels Under Rotating Stall and Surge

[+] Author and Article Information
S. Mizuki

Hosei University, Tokyo, Japan

Y. Oosawa

Nippon Telegraph & Telephone, Tokyo, Japan

J. Turbomach 114(2), 312-320 (Apr 01, 1992) (9 pages) doi:10.1115/1.2929145 History: Received February 19, 1991; Online June 09, 2008

Abstract

Unsteady flow patterns throughout a centrifugal compressor system during the rotating stall and the surge were measured experimentally. Various kinds of unsteady behavior of the flow appeared both continuously and suddenly as the flow rate decreased. The part-span stall, the full-span stall, the mild and deep stalls, and the deep surge appeared clearly. The fluctuations caused by the full-span stall were seen even during surge and affected the flow within the scroll through the vaneless diffuser. The experimental results were compared with those computed by the lumped parameter theory. Good agreements between them were obtained when appropriate values were selected for the lumped parameters.

Copyright © 1992 by The American Society of Mechanical Engineers
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