Surface effects of internal wave generated by a moving source in a two-layer fluid of finite depth

被引：1
作者：
Wei Gang
Le Jia-Chun
Dai Shi-qiang
机构：
[1] Shanghai University,Shanghai Institute of Applied Mathematics and Mechanics
[2] University of Science and Technology,Institute of Science
[3] PLA,undefined
来源：
Applied Mathematics and Mechanics | 2003年 / 24卷
关键词：
internal wave; surface wave; stratified fluid; divergence field; wave-wave interaction; ship wave; O353; 76B20;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Based on the potential flow theory of water waves, the interaction mechanism between the free-surface and internal waves generated by a moving point source in the lower layer of a two-layer fluid was studied. By virtue of the method of Green's function, the properties of the divergence field at the free surface were obtained, which plays an important role in the SAR (Synthetic Aperture Radar) image. It is shown that the coupling interaction between the surface-wave mode and internal-wave mode must be taken into account for the cases of large density difference between two layers, the source approaching to the pynocline and the total Froude number Fr close to the critical number Fr2. The theoretical analysis is qualitatively consistent with the experimental results presented by Ma Hui-yang.
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页码：1025 / 1040
页数：15
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