| Shi Fengyan,Zheng Lianyuan. 1996. A BFG model for calculation of tidal current and diffusion of pollutants in nearshore areas. Acta Oceanologica Sinica, (3):283－296 |
| A BFG model for calculation of tidal current and diffusion of pollutants in nearshore areas |
| A BFG model for calculation of tidal current and diffusion of pollutants in nearshore areas |
| Received:December 03, 1995 Revised:January 01, 1996 |
| DOI： |
| Key words:BFG model numerical calculation shallow sea equations and advection diffusion equation in curvilinear Coordinates |
| 中文关键词: BFG model numerical calculation shallow sea equations and advection diffusion equation in curvilinear Coordinates |
| 基金项目:This project was supported by the Excellent Talent Foundation across the Century of State Educational Commission. |
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| Abstract: |
| This study presents a boundary-fitted grid(BFG) numerical model with an aim to simulate the tidal currents and diffusion of pollutants in complicated nearshore areas.To suit the general model to any curvilinear grids,generalized 2-D shallow sea dynamic equations and the advection diffusion equation are derived in curvilinear coordinates,and the contravariant components of the velocity vector are adopted for easily realizing boundary conditions and making the equations conservational.As the generalized equations are not limited by a specific coordinate transformation,a self-adaptive grid generation method is then proposed conveniently to generate a boundary-fitted and varying spacing grid.The calculation in the Yangpu Bey and the Xinying Bey shows that this is an effective model for calculating tidal currents end diffusion of pollutants in the more complicated nearshore areas. |
| 中文摘要: |
| This study presents a boundary-fitted grid(BFG) numerical model with an aim to simulate the tidal currents and diffusion of pollutants in complicated nearshore areas.To suit the general model to any curvilinear grids,generalized 2-D shallow sea dynamic equations and the advection diffusion equation are derived in curvilinear coordinates,and the contravariant components of the velocity vector are adopted for easily realizing boundary conditions and making the equations conservational.As the generalized equations are not limited by a specific coordinate transformation,a self-adaptive grid generation method is then proposed conveniently to generate a boundary-fitted and varying spacing grid.The calculation in the Yangpu Bey and the Xinying Bey shows that this is an effective model for calculating tidal currents end diffusion of pollutants in the more complicated nearshore areas. |
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