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将计算区域Ω划分为内域Ω1和外域Ω２（Ω２＝Ω－Ω１），外域控制方程采用改进线性频散特性的二维Ｂｏｕｓｓｉｎｅｓｑ方程，用预报一校正法数值求解；结构物附近的内域控制方程为三维Ｎａｖｉｅｒ—Ｓｔｏｋｅｓ方程，由ＶＯＦ方法数值求解．通过在外域和内域相匹配的交界面上设置合适的速度和波面边界条件，建立了三维非线性波浪时域计算的耦合模型．模拟试验表明：（１）耦合模型数值波浪水池可以产生稳定的、重复性较好的波动过程；（２）用耦合模型数值波浪水池求解较大浅水区域上的非线性波浪数值计算问题可以取得较高的计算效率，同时又能得出结构物附近的复杂流场。关
The computational domain Ω is divided into the inner domain Ω1 and the outer domain Ω2 (Ω2 = Ω-Ω1). The outer domain control equation uses the two-dimensional Boussinesq equation with improved linear dispersion characteristics and is solved by the prediction-correction method. The inner domain control The equations are three-dimensional Navier-Stokes equations solved numerically by the VOF method. By setting the appropriate velocity and wave boundary conditions at the interface matching the outer domain and the inner domain, a coupled model of three-dimensional nonlinear time domain calculation is established. The simulation results show that: (1) the coupling model numerical wave pool can produce stable and repetitive good wave process; (2) the numerical wave pool coupling numerical model can solve the numerical problem of nonlinear wave in larger shallow water area, High computational efficiency, at the same time it can come to complex flow field near the structure. turn off