圆中环沉沙排沙过滤池三维流场数值模拟

在对圆中环沉沙排沙过滤池的计算区域作了特殊处理后,选用适当的边界条件,采用VOF方法追踪自由水面,结合标准k-ε双方程模型,对圆中环沉沙排沙过滤池进行了三维数值模拟研究。给出了特定断面的清水流速矢量图、流速等值线图和流速轨迹线图等水力参数。计算结果对研究圆中环沉沙排沙过滤池的流场特性和输沙机理以及圆中环沉沙排沙过滤池设计具有一定的指导意义

Numerical simulation of 3D flow field for circular ring filter of desilting sediment

After the computation region of desilting filter of sediment of circular ring was especially treated, the paper chose some reasonable boundary conditions, used Volume of Fluid(VOF) method to trace free-surface and combined standard RNG model to simulate 3-D water flow field in the desilting filter of sediment of circular ring. Meanwhile,the vorticity field and velocity as well as the flow line of all the measured planes inside the equipment are all presented.The computed result has some instructive significance for the study of characteristic of flow field in the desilting filter of sediment of circular ring.