A series of studies on the dynamic characteristics of noncavitating centrifugal pumps were extended to the cavitating case. An experimental study was carried out on the transient behavior of a cavitating centrifugal pump at the sudden opening/closure of the discharge valve. Cavitation behavior in the centrifugal pump was visualized during the transient period by using high speed video camera, and instantaneous pressure and flowrate were measured at the pump suction and discharge section with rotational speed during the transient period. Unsteady pressure, as well as flowrate, was related to the time-dependent cavitation behavior. As a result of the present study, pressure and flowrate fluctuations were found to occur due to oscillating cavitation or water column separation at rapid transient operations.
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December 1999
Research Papers
Transient Behavior of a Cavitating Centrifugal Pump at Rapid Change in Operating Conditions—Part 1: Transient Phenomena at Opening/Closure of Discharge Valve
T. Tanaka,
T. Tanaka
Department of Mechanical and Electrical Engineering, Yatsushiro National College of Technology, Yatsushiro, 866-8501, Japan
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H. Tsukamoto
H. Tsukamoto
Department of Mechanical Engineering, Kyushu Institute of Technology, Tobata, Kitakyushu, 804-8550, Japan
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T. Tanaka
Department of Mechanical and Electrical Engineering, Yatsushiro National College of Technology, Yatsushiro, 866-8501, Japan
H. Tsukamoto
Department of Mechanical Engineering, Kyushu Institute of Technology, Tobata, Kitakyushu, 804-8550, Japan
J. Fluids Eng. Dec 1999, 121(4): 841-849 (9 pages)
Published Online: December 1, 1999
Article history
Received:
March 12, 1998
Revised:
June 22, 1999
Online:
December 4, 2007
Citation
Tanaka, T., and Tsukamoto, H. (December 1, 1999). "Transient Behavior of a Cavitating Centrifugal Pump at Rapid Change in Operating Conditions—Part 1: Transient Phenomena at Opening/Closure of Discharge Valve." ASME. J. Fluids Eng. December 1999; 121(4): 841–849. https://doi.org/10.1115/1.2823545
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