A Large eddy simulation turbulence model for coastal seas and shallow water problems

摘要

In large scale motions of circulations in coastal seas and shallow-water problems, different characteristics of flow in the horizontal plane and inter vertical direction are ex- pected. In this paper, a new large eddy simulation model was proposed. There are some difference between the present method and the other LES models. The philosphy of the large eddy simulation and the directional eddy viscosity meth- od were applied in the horizontal plane and in the vertical di- rection, respectively. Comparied. With the other LES models in which there is no difference between horizontal viscosity and vertical viscosity, the proposed method is resonable.