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近岸流对波浪传播影响的数值分析
谢媛媛1, 梁丙臣2, 马得培3
1.海洋石油工程(青岛)有限公司;2.中国海洋大学工程学院;3.宁德海事局
摘要:
使用近岸波浪模型SWAN计算存在沿岸流和离岸流时的近岸波浪传播。先设离岸流u=0m/s, 模拟均匀、非均匀沿岸流的流速和梯度对波高传播的影响; 再设沿岸流v=0.5m/s, 模拟均匀、非均匀离岸流的流速和梯度对波能高传播的影响。从模拟中得到, 近岸波浪传播受沿岸流、离岸流的流速和梯度影响时, 波高的变化规律。
关键词:  波浪传播  沿岸流  离岸流  SWAN
DOI：
分类号:
基金项目:国家自然科学基金资助项目(50809065); 教育部新教师基金项目(200804231039)
Numerical study of the influence of coastal current on wave propagation
XIE Yuan-yuan,LIANG Bing-chen,MA De-pei
Abstract:
We simulated propagation of coastal waves coupled with longshore currents and offshore currents. Firstly, we investigated how the velocities and the gradients of uniform or non-uniform longshore currents affect wave heights in the propagation, when the offshore currents were assigned to be zero. Secondly, we investigated how the velocities and the gradients of uniform or non-uniform offshore currents affect the variation of wave heights in the propagation, when the longshore offshore currents were assigned to be a constant. As a result, the correlation between wave height and the velocity and the gradient of coastal currents was obtained.
Key words:  wave propagation  longshore current  offshore current  SWAN
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