南水北调与水利科技Issue(4)：721-725,5.DOI:10.13476/j.cnki.nsbdqk.2015.04.025
宽尾墩消力池非恒定流动水压强特性数值模拟
Numerical simulation of unsteady hydrodynamic pressure in the stilling basin of flaring gate pier
摘要
Abstract
The RNG k-ε turbulent model and dynamic mesh technology w ere applied to simulate the unsteady flow in the st illing basin of Y-shaped flaring gate pier during the process of radial gate opening. The effects of tot al gate opening time, w ater head over weir, and initial downstream wat er depth on the pressures of anti-arc and stilling basin w ere analyzed. Three different flow patterns w ere defined according to different gate opening velocit ies. The pressure characteristics of anti-arc and st illing basin were obtained. The results show ed that ( 1) if the total gate opening time is shorter, flow lagging behind the gate is more obvious and the lagged maximum pressure is higher in the impact zone; ( 2) there is a linear relationship betw een the maximum pressure and water head in the impact zone during the gate opening process; and ( 3) the difference betw een the maximum pressure in the impact zone and average pressure in t he adjusting zone decreases w ith the increasing of dow nstream w ater depth. T he simulation results agreed w ell w ith the experimental data, which suggested that t he numerical simulation method is reliable and can provide import ant reference for the reasonable operat ion of hydraulic gate.关键词
三维动态数值模拟/开启过程/非恒定流/动网格/弧形闸门/消力池Key words
three-dimensional dynamical numerical simulation/opening process/unsteady flow/dynamic mesh/radial gate/st illing basin分类
建筑与水利引用本文复制引用
邱春,刘承兰..宽尾墩消力池非恒定流动水压强特性数值模拟[J].南水北调与水利科技,2015,(4):721-725,5.基金项目
衡阳市重点科学技术研究项目(201422095-3) （201422095-3）
