Transient Characteristics of a Centrifugal Pump During Stopping Period

[+] Author and Article Information
H. Tsukamoto, S. Matsunaga, H. Yoneda

Department of Mechanical Engineering, Kyushu Institute of Technology, Kitakyushu, Japan

S. Hata

Hiroshima Shipbuilding Yard, Mitsubishi Heavy Industries, Ltd., Hiroshima, Japan

J. Fluids Eng 108(4), 392-399 (Dec 01, 1986) (8 pages) doi:10.1115/1.3242594 History: Received February 26, 1985; Online October 26, 2009


A theoretical and experimental study has been made on the transient characteristics of a centrifugal pump during its rapid deceleration from initial speed to zero. Instantaneous rotational speed, flow-rate, and total pressure rise are measured for various stopping schemes. Theoretical calculations for the prediction of transient characteristics are developed and compared with the corresponding experimental results. As a result of this study, it becomes clear that impulsive pressure and the lag in circulation formation around impeller vanes play predominant roles for the difference between dynamic and quasi-steady characteristics of turbopumps. Moreover, a criterion for the assumption of quasi-steady change is presented.

Copyright © 1986 by ASME
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