Numerical Modeling of Wave Diffraction-Refraction in Water of Varying Current and Topography  

作　　者：冯卫兵 洪广文 

出　　处：《China Ocean Engineering》2000年第1期45-58,共14页中国海洋工程（英文版）

基　　金：Science Foundation of National Education Committee of China,(Grant No.9429405)

摘　　要：A numerical model for wave diffracrion-refraction in water of varying current and topography is proposed, and time-dependent wave mild-slope equation with a dissipation term and corresponding equivalent: governing equations are presented. Two different expressions of parabolic approximations for the case of the absence of current are also given and analyzed. The influence of current on the results of simulation of waves is discussed. Some examples show that the present model is better than others in simulating wave transformation in large water areas. And they also show that the influence of current should be taken into account, on numerical modeling of wave propagation in water of strong current and coastal areas, otherwise the modeling results will be largely distorted.A numerical model for wave diffracrion-refraction in water of varying current and topography is proposed, and time-dependent wave mild-slope equation with a dissipation term and corresponding equivalent: governing equations are presented. Two different expressions of parabolic approximations for the case of the absence of current are also given and analyzed. The influence of current on the results of simulation of waves is discussed. Some examples show that the present model is better than others in simulating wave transformation in large water areas. And they also show that the influence of current should be taken into account, on numerical modeling of wave propagation in water of strong current and coastal areas, otherwise the modeling results will be largely distorted.

关 键 词：numerical simulation diffraction-refraction WAVE 

分 类 号：TV139.2[水利工程—水力学及河流动力学]