Distinction Between Different Types of Impeller and Diffuser Rotating Stall in a Centrifugal Compressor With Vaneless Diffuser

[+] Author and Article Information
P. Frigne, R. Van Den Braembussche

von Karman Institute for Fluid Dynamics, Chaussée de Waterloo, 72, 1640 Rhode Saint Genèse, Belgium

J. Eng. Gas Turbines Power 106(2), 468-474 (Apr 01, 1984) (7 pages) doi:10.1115/1.3239589 History: Received December 21, 1982; Online October 15, 2009


This paper describes the results of an experimental investigation of the sub-synchronous rotating flow patterns in a centrifugal compressor with vaneless diffuser. Several compressor configurations have been examined by means of hot wire anemometry, Fourier analysis allowed one to distinguish between the different modes of unstable operation. For both impeller and diffuser rotating stall, comparison is made between the amplitude, frequency, and periodicity of the induced velocity fluctuations. The results are further cross-checked with other experimental data.

Copyright © 1984 by ASME
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