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RESEARCH PAPERS

Flow in the Inducer of a Centrifugal Compressor Measured With a Laser Velocimeter

[+] Author and Article Information
H. Hayami, Y. Senoo

Research Institute of Industrial Science, Kyushu University 86, Kasugashi, Fukuoka 816, Japan

H. Ueki

Nagasaki University, Nagasaki 852, Japan

J. Eng. Gas Turbines Power 107(2), 534-540 (Apr 01, 1985) (7 pages) doi:10.1115/1.3239766 History: Received January 05, 1984; Online October 15, 2009

Abstract

The flow field in the inducer of a high-pressure-ratio centrifugal compressor has been measured with a laser-2-focus velocimeter (L2FV) at two flow rates that were on each side of the apparent inducer-stall limit at 70 percent speed. The limit was determined based on the pressure pattern between inducer blades along the shroud. The measured time-mean velocity distribution is compared with the prediction based on an inviscid quasi-three-dimensional flow analysis and the viscous effects are clarified. Furthermore, the nature of flow unsteadiness is discussed on the basis of the L2FV data. Using the observed data it is concluded that the inducer works well even at the apparent inducer-stall condition.

Copyright © 1985 by ASME
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