Investigation and Control of Backflow Ahead of a Shrouded Inducer

[+] Author and Article Information
C. Offtinger Brissaud, C. Henry, R. Morel, F. Spettel

Equipe Hydraulique I.N.S.A. Lyon, Laboratoire de Mécanique des Fluides et d’Acoustique, U.M.R. CNRS 5509 E.C.L., U.C.B. Lyon I, 20, ave A. Einstein, 69621 Villeurbanne, Cedex France

J. Fluids Eng 120(3), 549-555 (Sep 01, 1998) (7 pages) doi:10.1115/1.2820697 History: Received October 08, 1997; Revised February 23, 1998; Online January 22, 2008


Incorporating a backflow recirculator is a way to reduce part load instabilities of inducers. Experimental results demonstrate that two devices with simple geometry considerably soften pressure pulsations in suction and discharge pipes associated with part load instabilities, even at low NPSH conditions and low flowrates. This is accomplished with negligible adverse effects on pump performance.

Copyright © 1998 by The American Society of Mechanical Engineers
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