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contributor authorHuan Wang
contributor authorLing Zhou
contributor authorDeyou Liu
contributor authorBryan Karney
contributor authorPei Wang
contributor authorLin Xia
contributor authorJiajie Ma
contributor authorChang Xu
date accessioned2017-12-16T09:08:31Z
date available2017-12-16T09:08:31Z
date issued2016
identifier other%28ASCE%29HY.1943-7900.0001171.pdf
identifier urihttp://138.201.223.254:8080/yetl1/handle/yetl/4239105
description abstractLiquid column separation (LCS) in pressurized pipelines may occur if a water hammer event drops the local pressure to the liquid’s vapor point. Numerical simulations of LCS have traditionally been based on one-dimensional (1D) transient flow theory; here, a two-dimensional (2D) computational fluid dynamics (CFD) model is used to investigate the complicated nature of LCS and to help characterize the limitations of the traditional 1D models. To this end, the Schnerr–Sauer cavitation model with a shear-stress transport (SST) k−ω turbulence model is employed, whereas the Unsteady Reynolds-Averaged Navier-Stokes (URANS) equations are solved for the mixture of liquid and vapor. 2D model results are compared to both experimental data and to those of the 1D discrete vapor-cavity model (DVCM), thus demonstrating that the 2D method effectively simulates the pressure variations while helping to visualize the associated physical processes. More specifically, the 2D simulations vividly reveal the growth and the collapse of the cavity, including the formation of an intermediate cavity and both the location and shape of the region undergoing distributed vaporous cavitation.
publisherAmerican Society of Civil Engineers
titleCFD Approach for Column Separation in Water Pipelines
typeJournal Paper
journal volume142
journal issue10
journal titleJournal of Hydraulic Engineering
identifier doi10.1061/(ASCE)HY.1943-7900.0001171
treeJournal of Hydraulic Engineering:;2016:;Volume ( 142 ):;issue: 010
contenttypeFulltext


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