A Photographic Study of the Three-Dimensional Flow in a Radial Compressor

[+] Author and Article Information
Y. Senoo, M. Yamaguchi, M. Nishi

Research Institute of Industrial Sciences, Kyushu University, Fukuoka, Japan

J. Eng. Power 90(3), 237-243 (Jul 01, 1968) (7 pages) doi:10.1115/1.3609179 History: Received November 20, 1967; Online August 25, 2011


In order to visualize the three-dimensional flow in the impeller and the vaneless diffuser of a centrifugal compressor, water is used as the working fluid and streak lines of colored water are photographed and examined. The test is made at an extremely low speed so that streak lines do not diffuse due to turbulent mixing. The streak lines clearly demonstrate several types of secondary flow, some of which agree with what have been speculated to exist in actual compressors. Most of observed secondary flow patterns are qualitatively understandable with existing theories.

Copyright © 1968 by ASME
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