Character Finite Volume Method(FVM~ utilized to calculate Bosten lake hydrodynamic characteristic in this paper. It is testified that wind-driven is primary cause which formed circulate flow velocity field is offered. Different wind direction has distinct effect on circulation flow structure. The unstructured mesh is adopted~which can be refined locally and adaptively according to the planar geometry of computational domain. The unsteady 2D shallow water circulation flow equations expresse(l by ...