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RESEARCH PAPERS

Comparisons of the Relative Effect of Tip Clearance on Centrifugal Impellers

[+] Author and Article Information
A. Engeda, M. Rautenberg

Institute of Turbomachinery, University of Hannover, Hannover, Federal Republic of Germany

J. Turbomach 109(4), 545-549 (Oct 01, 1987) (5 pages) doi:10.1115/1.3262146 History: Received January 30, 1987; Online November 09, 2009

Abstract

Why do some centrifugal impellers exhibit high sensitivity to tip clearance losses while others don’t? This may be understood by considering the geometric and fluid mechanics design parameters of the impellers. On the basis of experiments on five pumps of different specific speed, the relative effect on the stage performances of the pumps due to tip clearance is studied and earlier works in the field are discussed.

Copyright © 1987 by ASME
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