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RESEARCH PAPERS

An Investigation of the Effect of Cavitation Bubbles on the Momentum Loss in Transient Pipe Flow

[+] Author and Article Information
M. E. Weyler

Civil, Engineer Corps, United States Naval Reserve, Saigon, Republic of Viet Nam

V. L. Streeter

Department of Civil Engineering, University of Michigan, Ann Arbor, Mich.

P. S. Larsen

Department of Mechanical Engineering, University of Michigan, Ann Arbor, Mich.

J. Basic Eng 93(1), 1-7 (Mar 01, 1971) (7 pages) doi:10.1115/1.3425170 History: Received January 20, 1970; Online October 27, 2010

Abstract

Based on experimental observations of pressure changes during hydraulic transients in pipe flow with column separation, a physical model was hypothesized and correlated with the data to provide a semiempirical “bubble shear stress” which can be used to predict the increased momentum loss observed under column separation conditions. The “bubble shear stress” arises from the nonadiabatic expansion and collapse of gas bubbles present throughout the low pressure column separation flow, and is found to be proportional to the strength of passing pressure waves, and a weak function of the amount of gas trapped on the pipe walls.

Copyright © 1971 by ASME
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