文件名称：FVFOM: A three dimensional semi-implicit unstructured grid ocean model
文件大小：595KB
文件格式：PDF
更新时间：2018-04-07 02:38:11
model
A new three dimensional semi-implicit finite volume free-surface ocean model (FVFOM) has been developed for simulating the coastal ocean circulation, which is based on 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 semi-implicit finite volume method, in that the free-surface and 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 integral method. The partial cell method is used for resolving topography, which let the model can be better represent irregular topography. The model is closed physically and mathematically using the Mellor and Yamada level-2.5 turbulent closure submodel. The model has been tested against analytical cases for wind and tidal oscillation circulation, and is applied to simulation the tidal flow in the Bohai Sea. Results are good agreement both with the analytical solutions and measurement results.