本文在前人网格生成技术的基础上,提出了一种按水深及其梯度自动生成正交数值网格的方法,克服了水流数值模拟中有限差分网格难以贴合复杂边界和适应地形变化的不足,建立了波浪与水流相互作用的近岸流数值模式.文中结合国内外有关的实验与分析资料,采用双步隐式法,对该模式进行了验证和计算,取得了较为满意的结果. Based on the previous generation techniques of grids, this paper proposes a method of automatically generating orthogonal grids according to the depth of water and its gradient, which overcomes the difficulty of the finite difference grids fitting the complex boundaries and adapting to the terrain changes in the numerical simulation of water flow , A numerical model of nearshore flow with interaction between wave and water flow is established.Based on the experimental and analytical data both at home and abroad, this model is validated and calculated using the two-step implicit method, and satisfactory results are obtained .