Investingation of Coriolis Forces on the Caspian sea Currents Using a Two Dimensional Numerical Model

Due to important environmental consequences of lake currents in caspian Sea, it is useful to develop a numerical hydrodynamic model. Such a model would help predict the effect of desired variation of important parameters. The set of depth averafed continuity equation and two equations of motions in horizontal plane are chosen as a mathematical model. The inflow of the important rivers and precipitations from the water surface are taken into account in continuity equation. The negligible viscosity of water, turbulence of the flow parameters, the global stress terms of bed friction and wind effects are ignored in the equation of motions of motions and the Coriolis effect in considered as the only effective body force. The equations are discretised on triangular unstructured meshes using an efficient method, which may be considered some where between the finite element methods and the cell vertex finite volume methods. The flow domain is divided to triangles using Deluancy triangulation method. The result of developed computer model present significant influences of Coriolis body forces. The comparison between computed results from the model is with the observations available records and documents present acceptables agreements.

کلیدواژه ها:

Coriolis Forces ، Caspian Sea Currents ، Numerical Depth Averged Flow Solver