非均匀流场中随机波折射-绕射的数值计算  

Numerical Calculation of Combined Refraction-diffraction of Random Waves in Non-uniform Currents

作　　者：丁平兴[1] 史峰岩[1] 孔亚珍[1] 

机构地区：[1]华东师范大学河口海岸国家重点实验室

出　　处：《华东师范大学学报（自然科学版）》1998年第2期69-76,共8页Journal of East China Normal University(Natural Science)

基　　金：国家自然科学基金!49376250;国家教委跨世纪优秀人才基金

摘　　要：本文在非均匀流场中规则波折－绕射缓坡方程的基础上，引入谱的概念，建立了用方向谱表示的非均匀流场中随机波折－绕射缓坡方程，并选用文圣常等提出的解析方向谱作为靶谱，就一模型海区进行具体的数值计算，结果表明，随机波折－绕射模型要明显优于规则波的折－绕射模型。Based on the mild - slope equation of regular waves, a numerical model in terms of directional spectrum is presented for the prediction of combined refraction - diffraction of random waves propagating in the region of non - uniform currents. By choosing the directional spectrum given by Wen et al. the numerical computation is carried out in an experimental sea region and the result shows that the model of combined refraction - diffraction of random waves is obviously superior to that of the regular waves.

关 键 词：随机波 折射 绕射 海洋 非均匀流场 数值计算 

分 类 号：P731.22[天文地球—海洋科学]