A Lagrangian wave characteristic method for simulating transient water column separation

被引:2
|
作者
Jung, Bong Seog [2 ]
Boulos, Paul F. [1 ]
Wood, Don J. [3 ]
Bros, Christopher M. [4 ]
机构
[1] MWH Soft, Broomfield, CO 80021 USA
[2] MWH Soft, Arcadia, CA USA
[3] Univ Kentucky, Dept Civil Engn, Lexington, KY 40506 USA
[4] MWH UK Ltd, Warrington, Cheshire, England
来源
JOURNAL AMERICAN WATER WORKS ASSOCIATION | 2009年 / 101卷 / 06期
关键词
FLOW;
D O I
10.1002/j.1551-8833.2009.tb09907.x
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
Water column separation-the rupture of water columns in pressurized pipelines-can be triggered by low- or negative-pressure transients when the pressure falls to vapor pressure, causing the water to vaporize and effectively dividing the water column. This phenomenon must be avoided because it reduces system performance, generates annoying vibrations and noise, and severely damages equipment. In this article, a Lagrangian method that implements the numerical discrete vapor cavity model is proposed for, simulating transient water column separation. This robust and straightforward model greatly improves the reliability of Lagrangian-based network transient analysis models and produces results identical to those obtained from an Eulerian-based implementation approach. Using the proposed model, utilities will be, better able to identify regions in the distribution system that are susceptible to low- or negative-pressure, sure surges and devise effective strategies to. control transients. Installation of properly designed surge-protection devices can help prevent water column separation and avoid potential pathogen intrusion.
引用
收藏
页码:64 / +
页数:12
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