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RESEARCH PAPERS

Hysteresis Characteristics of Francis Pump-Turbines When Operated as Turbine

[+] Author and Article Information
M. Yamabe

Hitachi Research Laboratory, Hitachi, Ltd., Hitachi, Japan

J. Basic Eng 93(1), 80-84 (Mar 01, 1971) (5 pages) doi:10.1115/1.3425186 History: Received August 03, 1970; Online October 27, 2010

Abstract

The results obtained through experiments on models concerning the phenomena of hysteresis characteristics of Francis pump-turbines generated when operated as turbine are described in the present report. It has made clear the fact that the condition for generating the phenomena is regulated by cavitation factor and guidevane openings and affected by the specific speed of a pump-turbine; furthermore, some characteristics of the flow state within a runner are pointed out.

Copyright © 1971 by ASME
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