Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/80915
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Type: Journal article
Title: Numerical comparison of pipe-column-separation models
Author: Simpson, A.
Bergant, A.
Citation: Journal of Hydraulic Engineering, 1994; 120(3):361-377
Publisher: American Society of Civil Engineers
Issue Date: 1994
ISSN: 0733-9429
1943-7900
Statement of
Responsibility: 
Angus R. Simpson and Anton Bergant
Abstract: Results comparing six column-separation numerical models for simulating localized vapor cavities and distributed vaporous cavitation in pipelines are presented. The discrete vapor-cavity model (DVCM) is shown to be quite sensitive to selected input parameters. For short pipeline systems, the maximum pressure rise following column separation can vary markedly for small changes in wave speed, friction factor, diameter, initial velocity, length of pipe, or pipe slope. Of the six numerical models, three perform consistently over a broad number of reaches. One of them, the discrete gas-cavity model, is recommended for general use as it is least sensitive to input parameters or to the selected discretization of the pipeline. Three models provide inconsistent estimates of the maximum pressure rise as the number of reaches is increased; however, these models do give consistent results provided the ratio of maximum cavity size to reach volume is kept below 10%.
Rights: Copyright © 1994 American Society of Civil Engineers
RMID: 0030000321
DOI: 10.1061/(ASCE)0733-9429(1994)120:3(361)
Appears in Collections:Civil and Environmental Engineering publications

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