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RESEARCH PAPERS

Analysis of Liquid and Structural Transients in Piping by the Method of Characteristics

[+] Author and Article Information
D. C. Wiggert, F. J. Hatfield

Department of Civil and Environmental Engineering, Michigan State University, East Lansing, MI 48824-1212

S. Stuckenbruck

Department of Mechanical Engineering, Catholic University of Rio de Janeiro, Rio de Janeiro, Brazil

J. Fluids Eng 109(2), 161-165 (Jun 01, 1987) (5 pages) doi:10.1115/1.3242638 History: Received October 01, 1985; Online October 26, 2009

Abstract

Since liquid-filled piping systems are composed of slender elements, their transient behavior can be described as one-dimensional wave phenomena. Seven wave components are identified: coupled axial compression of liquid and pipe material; coupled transverse shear and bending of the pipe elements in two principal directions; and torsion of the pipe wall. Utilizing the method of characteristics, the combined system of difference equations for pipe elements and the pipe junction boundary conditions comprise a general mathematical tool for predicting the liquid pressure and pipe stress responses to transient excitation of either liquid or piping. The complexity of fluid-structure interaction that can take place is demonstrated.

Copyright © 1987 by ASME
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