高坝挑流冲坑流场的数值模拟

Numerical Simulation for the Flow in the Scour Pool Downstream a High Spillway

本文采用正交变换下的有限体积法,选取标准K-ε紊流模型,对三峡溢流坝下游冲坑流场进行了维数值模拟,得到了冲坑内部流速与压强分布等资料。经与实测资料进行对比分析,结果较为满意。

In this paper, a finite-difference procedure combined with orthogonal transformation is employed to simulate the two-dimensional flow in the scour pool downstream the Three Gorge Dam. The method is well suitable for the irregular boundary of the scour. The detailed distributions of variables, including average velocity, average pressure are obtained and discussed. It is shown that the numerical results agree well with previous experiment data and that the procedure exhibited here in is reliable.