缓坡地形上非线性波浪变形的并行计算

Parallel computing of nonlinear wave transformation over topography with mild slopes

基于椭圆型缓坡方程和消息传递接口机制,提出了缓坡地形上非线性波浪变形的一种并行数值模拟方法,并在微机群集并行系统上进行了数值实现。对一种典型缓坡地形上的非线性波浪传播变形进行了数值模拟,数值结果与实验数据的比较表明,在椭圆型缓坡方程中应用非线性波色散关系可有效考虑波浪的非线性效应,同时从获得的并行效率和并行加速比来看,并行数值方法可有效提高数值模拟效率。

Based on the elliptic mild slope equation and the Message Passing Interface (MPI), a parallel solution method is proposed for the simulation of nonlinear wave transformation over a topography with mild slopes, and implemented numerically on a personal computer (PC) cluster The nonlinear wave transformation over a typical topography with mild slopes is simulated A comparison of numerical results with experimental data shows that the application of the nonlinear dispersion relation to the elliptic mild slope equation can effectively take the nonlinear effect into account It can also be seen from the parallel efficiency and speedup rate that the parallel solution method proposed in the present paper can effectively increase the efficiency of numerical simulations