Numerical Simulation on the Interact

Numerical Simulation on the Interaction of an Internal Solitary Wave with a Step-Type Topography

Based on a nonhydrostatic numerical ocean model developed by one of the authors, the interaction of an internal solitary wave with a step-type topography was investigated. Over the step topography, the flow pattern could be classified into three catego-ries: 1) the propagation and spatial structure of the internal solitary wave was little influenced by the bottom topography, 2) the in-ternal solitary wave was significantly distorted by the blocking effect of the topography without the occurrence of wave breaking and 3) the internal solitary wave was broken as it encountered and passed over the bottom topography. A detailed description of the processes leading to wave breaking is given in this paper together with energy budget analysis. The results revealed that the maxi-mum of the energy dissipation rate is no more than 40%, which is consistent with available experimental data.

作 者： XU Zhaoting LI Qun CHEN Xu YU Jia   作者单位： Physical Oceanography Laboratory and Institute of Physical Oceanography, Ocean University of China,Qingdao 266100, P. R. China  刊 名： 中国海洋大学学报（英文版）  ISTIC 英文刊名： JOURNAL OF OCEAN UNIVERSITY OF CHINA  年，卷(期)： 2008 7(2)  分类号： P7  关键词： stratified flow   internal solitary wave   energy dissipation  

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