A three-dimensional semi-implicit unstructured grid finite volume ocean model

查看全文 作　　者：WANG [1]Zhili;GENG [2]Yanfen

机构地区：[1]State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Nanjing Hydraulic Research Institute;[2]School of Transportation, Southeast University

出　　处：《Acta Oceanologica Sinica》索引2013年第32卷第1期,共11页

基　　金：The Major State Basic Research Program of China under contract No. 2012CB417002;the National Natural Science Foundation of China under contract Nos 50909065 and 51109039 摘　　要：A new three-dimensional semi-implicit finite-volume ocean model has been developed for simulating the coastal ocean circulation, which is based on the staggered C -unstructured non-orthogonal grid in the horizontal direction and z -level grid in the vertical direction. The three-dimensional model is discretized by the semi-implicit finite-volume method, in that the free-surface and the vertical diffusion are semi-implicit, thereby removing stability limitations associated with the surface gravity wave and vertical diffusion terms. The remaining terms in the momentum equations are discretized explicitly by an integral method. The partial cell method is used for resolving topography, which enables the model to better represent irregular topography. The model has been tested against analytical cases for wind and tidal oscillation circulation, and is applied to simulating the tidal flow in the Bohai Sea. The results are in good agreement both with the analytical solutions and measurement results. 关键词：三维非结构网格有限体积法海洋模式半隐式三维模型垂直扩散模式模拟自由表面

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A three-dimensional semi-implicit unstructured grid finite volume ocean model

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