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Type: Journal article
Title: Parameters affecting water-hammer wave attenuation, shape and timing. Part 2: Case studies
Author: Bergant, A.
Tijsseling, A.
Vitkovsky, J.
Covas, D.
Simpson, A.
Lambert, M.
Citation: Journal of Hydraulic Research, 2008; 46(3):382-391
Publisher: Int Assn Hydraulic Research
Issue Date: 2008
ISSN: 0022-1686
Statement of
Anton Bergant, Arris S. Tijsseling, John P. Vítkovský, Dídia I. C. Covas, Angus R. Simpson and Martin F. Lambert
Abstract: This two-part paper investigates parameters that may significantly affect water-hammer wave attenuation, shape and timing. Possible sources that may affect the waveform predicted by classical water-hammer theory include unsteady friction, cavitation (including column separation and trapped air pockets), a number of fluid–structure interaction effects, viscoelastic behaviour of the pipe-wall material, leakages and blockages. Part 1 of this two-part paper presents the mathematical tools needed to model these sources. Part 2 of the paper presents a number of case studies showing how these modelled sources affect pressure traces in a simple reservoir-pipeline-valve system. Each case study compares the obtained results with the standard (classical) water-hammer model, from which conclusions are drawn concerning the transient behaviour of real systems.
Keywords: Air pocket
column separation
fluid–structure interaction
unsteady friction
viscoelastic behaviour of the pipe-wall
water hammer
Rights: © 2008 International Association of Hydraulic Engineering and Research
DOI: 10.3826/jhr.2008.2847
Appears in Collections:Aurora harvest 7
Civil and Environmental Engineering publications
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