RESEARCH PAPERS: Papers From Symposium on Prediction of Centrifugal Compressor and Pump Stability and Surge

An Experimental Study of Surge in Centrifugal Compressors

[+] Author and Article Information
Kosuke Toyama

Aerodynamics, Engine Division, Technical Research Center, Komatsu Ltd., Tokyo, Japan

P. W. Runstadler, R. C. Dean

Creare Innovations Inc., Hanover, N.H.

J. Fluids Eng 99(1), 115-124 (Mar 01, 1977) (10 pages) doi:10.1115/1.3448506 History: Received November 02, 1976; Online October 12, 2010


Results of high-response measurements in a high-pressure-ratio centrifugal compressor during surge operation are presented. The interpretation of the data provides improved understanding of the flow mechanism of surge and the phenomena which apparently trigger surge. The mass flow throughout the compressor was observed to oscillate in synchronism during supposedly “stable” operation. Surge of the test compressor occurred when a flow perturbation, during “stable” operation, exceeded an apparent limit. When the instantaneous value of diffuser-inlet pressure recovery factor, Cp2*–4 , reached approximately 0.40–0.45, the diffuser inlet flow was badly deteriorated and surge occurred. However, gross separation of the diffuser inlet boundary layer was not observed before surge commencement. It is concluded that instantaneous operating states must be recognized for competent surge prediction. Further, doing so will probably require analysis of the entire compressor system including piping, vessels, flow resistances, etc.

Copyright © 1977 by ASME
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