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

An Experimental Investigation of the Control of Surge in Radial Compressors Using Close Coupled Resistances

[+] Author and Article Information
J. L. Dussourd, G. W. Pfannebecker, S. K. Singhania

Ingersoll-Rand Research, Inc., Princeton, N.J.

J. Fluids Eng 99(1), 64-74 (Mar 01, 1977) (11 pages) doi:10.1115/1.3448560 History: Received December 29, 1975; Online October 12, 2010


The aerodynamic characteristics of centrifugal compressors are examined with special attention given to the range of flows normally in the unstable region. They are examined for the intended purpose of extending the compressor’s useful stable range. Two such means are investigated, but a close coupled aerodynamic resistance designed to achieve negative combined slope showed the greater promise. A number of experiments are performed in which the geometry and location of the close coupled control devices are varied. It is shown that with adequate design, stable operation is possible down to 40 percent of the normal surge flow. This can be done with hardware the configuration of which is practical and with attendant additional losses which are not prohibitive. The rationale and the empirical work are devoted to the single stage case but an examination is made of the stability considerations for the case of multi-stage machines.

Copyright © 1977 by ASME
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