Working Mechanism of Suction Ring and Effects of Its Geometry

[+] Author and Article Information
H. Murai, T. Narasaka

Tohoku University, Institute of High Speed Mechanics, Sendai, Japan

J. Fluids Eng 95(4), 505-512 (Dec 01, 1973) (8 pages) doi:10.1115/1.3447063 History: Received April 04, 1973; Online October 12, 2010


The working mechanism of a suction ring and the mechanism in which a geometry of suction ring controls flow patterns inside a turbomachine and the performance of the turbomachine are clarified through the analyses of characteristics curves and oil-flow patterns obtained by the experiment performed with respect to an axial-flow pump equipped with suction rings of systematically changed geometry, the axial clearance from impeller blades, radial clearance from the casing and the length. A guide to determine a geometry of suction ring is presented.

Copyright © 1973 by ASME
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