三维有自由表面问题的数值模拟研究

本文采用求解三维弱可压流动模型及带浮力修正的Ｋ－ε两方程湍流模型的方法，用有限差分法数值求解，研究了有密度差的污染物在复杂流场中的对流扩散规律。文中给出一种简单而有效的处理自由面边界的方法，并详细地给出一个三维弱可压的流体动力学计算方法，数值计算表明本文的方法能较好地给出自由面的变化规律、流场的非定常过程及预测了污染物的对流扩散规律。

A Study on Numerical Simulation of 3-D Free Surface Boundary Problem

In this paper, a numerical investigation is presented by solving weakly compressible flow equations, together with modify k-s two-equations turbulent model. The numerical methods is based on finite-difference method. In this paper a simple, but powerful, method for treating complieated free surface boundary configuration is described. Using the numerical results of turbulent flow fields to estimate the rule of contamination convection and dispersion transport and the rule of free surface changed. A detailed deseription is given for 3- dimensional weakly compressible hydrodynamics code. The computational result agree well with available experimental data.