Experimental Determination of the Dynamic Transfer Matrix for a Pump

[+] Author and Article Information
A. Stirnemann

Sulzer Bros. Ltd., Winterthur, Switzerland

J. Eberl

Laboratory for Vibrations and Acoustics, Sulzer Bros. Ltd., Winterthur, Switzerland

U. Bolleter

Pump Division, Sulzer Bros. Ltd., Winterthur, Switzerland

S. Pace

Electric Power Research Institute, Palo Alto, Calif

J. Fluids Eng 109(3), 218-225 (Sep 01, 1987) (8 pages) doi:10.1115/1.3242651 History: Received December 30, 1985; Online October 26, 2009


Dynamic instability in pumping systems can be the cause of a wide variety of difficulties. Analytical investigations of the dynamic behavior of such systems depend on the proper mathematical model of the dynamic performance of the pump. This paper is concerned with the experimental means and analysis procedures for obtaining the transfer matrix representing the pump as a four-pole element. Direct measurement of the pulsating flow is omitted in favor of an indirect determination utilizing multiple pressure measurements in reference pipe sections attached to the pump. The method of parameter extraction from redundant experimental data, as well as the modeling by an equivalent electrical network is shown. Results are presented for noncavitating and slightly cavitating flows. The quality of the results is an indication that the method utilized represents a successful way to determine the dynamic transfer matrix for a pump.

Copyright © 1987 by ASME
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