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侧边界对内长波传播影响的数值模拟
白晔斐1,2, 宋金宝1
1.中国科学院海洋研究所;2.中国科学院研究生院
摘要:
利用修正的非线性水平二维Lynett—Liu内长波数值模式,模拟了小振幅孤立子内波进出水道口的传播过程,及其穿过狭窄水道的衍射过程。通过分析孤立子内波垂向波形和水平二维纹理图像随水道口的形状及开阔水域宽度的变化,研究了侧边界对孤立子内波传播所产生的影响,并与卫星遥感图片进行了对比。
关键词:  孤立子内波  完全水平二维  数值模拟  侧边界
DOI：
分类号:
基金项目:中国海洋石油总公司和中国科学院合作项目“内波特性及对建筑物的作用研究”
Numerical simulation of effects of lateral boundary on the propagation of internal long waves
Abstract:
Using nonlinear, horizontal and two dimensional modified Lynett-Liu model for internal long waves, we simulate the propagation process of small amplitude solitary waves going into and out of the tank outlet, and the diffraction through the narrow tank. By analyzing the variances of the vertical profiles of solitary waves and the form of horizontal two-dimensional wave patterns with the shape of the tank outlet and the width of the open fluid area, we investigate the lateral boundary effects on the propagation of solitary waves. Meanwhile, we compared the simulation results with satellite images.
Key words:  solitary internal wave  fully horizontal two-dimension  numerical simulation  Lateral boundary
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