水利学报2017，Vol.48Issue(8)：986-992,7.DOI:10.13243/j.cnki.slxb.20160949
排沙漏斗悬移质泥沙运动数值模拟
Numerical study on suspended sediment transport in a vortex settling basin
摘要
Abstract
The vortex settling basin is a hydraulic structure which used a vertical vortex to exclude sediment particles from diverted water.In order to ascertain the suspended sediment transport characteristics and the sediment removal mechanism in a vortex settling basin,an Euler-Lagrange method is used to simulate the air-water-sediment multiphase flow in the device.In this method,the turbulent flow of gas and liquid is modelled using the Reynolds stress model (RSM) and the Volume of fluid (VOF) interface tracking technique.A discrete particle model is adopted to calculate suspended sediment motion.The calculation results of the mean suspended sediment concentration distribution are in good agreement with measured results.The calculation results show that the sediment concentration distribution in the outer region of the basin is more uniform,and that there is a significantly high concentration zone near the bottom in the inner region of the basin.The authors hold that the sediment concentration distribution is mainly caused by the secondary flow within the vortex settling basin.关键词
排沙漏斗/悬移质/数值模拟/颗粒轨道模型Key words
vortex settling basin/suspended sediment/numerical simulation/discrete particle model分类
建筑与水利引用本文复制引用
肖柏青,戎贵文..排沙漏斗悬移质泥沙运动数值模拟[J].水利学报,2017,48(8):986-992,7.基金项目
国家自然科学基金项目(51309002,51579002) （51309002,51579002）
