摘要
针对我国《海港水文规范》中基于线性波浪理论的浅水变形计算现状,本文的第Ⅰ部分提出了建立在椭圆余弦波理论基础上的浅水变形实用计算法(PCM),用于计算沿直线传播的波浪的浅水变形。在其基础上,考虑了海底地形变化引起的波浪折射影响,使得PCM方法能拓展用于缓变水域近岸浅水波要素的计算。最后给出一个算例,采用PCM方法分别计算了不同外界因素(理想情况、风、海底摩擦、风及海底摩擦)作用下的浅水变形结果,并与商业软件DHI-MIKE21的计算结果进行比较,结果比较吻合。
In view of the present shoaling calculation method in the Code of Hydrology for Sea Harbor, a practical calculation method （PCM） of wave shoaling was proposed in the part I of this paper. It was used for the shoaling calculation of a cnoidal wave propagating in a straight line. On the basis of the research in the part I , wave refraction caused by variations in bathymetry is considered. Thus, the PCM method is extended to be able to compute shallow wave parameters over slowly varying bathymetry. In the final section, a numerical example is given. It is solved with the PCM method under different external factors conditions （ideal condition, wind, bottom friction and wind ＆ bottom friction） separately. The results are compared with those obtained via the commercial software DHI-MIKE21, and proved to be in good agreement in terms of wave parameters values.
出处
《水运工程》
北大核心
2015年第4期13-18,共6页
Port & Waterway Engineering
