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RESEARCH PAPERS

The Effect of Viscous Shear on Transients in Liquid Lines

[+] Author and Article Information
E. L. Holmboe

Research and Advanced Development Division, Avco Corporation, Wilmington, Mass.

W. T. Rouleau

Carnegie Institute of Technology, Pittsburgh, Pa.

J. Basic Eng 89(1), 174-180 (Mar 01, 1967) (7 pages) doi:10.1115/1.3609549 History: Received July 08, 1966; Online November 03, 2011

Abstract

Two separate experiments were performed and the results were compared with theory: (1) The propagation of a short, rectangular pulse of pressure in a cylindrical tube of previously undisturbed liquid and (2) the pressure surge resulting from a step change of flow in a pipe, commonly termed “water hammer.” By considering viscous shear to be frequency-dependent, good agreement between experiment and theory was found. The observation of a precursing phenomenon in a low viscosity liquid is also discussed.

Copyright © 1967 by ASME
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