RESEARCH PAPERS: Vibration and Sound

Theoretical Study of Fluid Forces on a Centrifugal Impeller Rotating and Whirling in a Volute

[+] Author and Article Information
Y. Tsujimoto

Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka, 560 Japan

A. J. Acosta, C. E. Brennen

California Institute of Technology, Division of Engineering and Applied Science, Pasadena, CA 91125

J. Vib., Acoust., Stress, and Reliab 110(3), 263-269 (Jul 01, 1988) (7 pages) doi:10.1115/1.3269512 History: Received July 30, 1986; Online November 23, 2009


Fluid forces on a rotating and whirling centrifugal impeller in a volute are analyzed with the assumption of a two-dimensional rotational, inviscid flow. For simplicity, the flow is assumed to be perfectly guided by the impeller vanes. The theory predicts the tangential and the radial force on the whirling impeller as functions of impeller geometry, volute spacing, and whirl ratio. A good qualitative agreement with experiment is found.

Copyright © 1988 by ASME
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