摘要
本文应用深度平均k—ε两方程紊流模型计算了平面轴对称及非轴对称突然扩大宽浅自由表面流流场。计算方法采用MacCormack显式时间—分裂有限差分法。计算结果与实验结果吻合较好。文中给出了紊动能及其耗散率的计算结果。它们的分布与实际情况相符。
In this paper the turbulence model of depth-averaged k-εequations is adopted to calculate the wide, shallow free surface flow field of plane axial symmetry and unsymmetry by way of abrupt expansion. The Mac Cor mack explicit time share finite difference is used as the computation method. The calculated results quite agree with the experimental data.
关键词
紊流模型
流场
紊流
turbulence flow
difference methods
depth-averaged model
