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The baroclinic tide in the Strait of Bab el Mandeb is simulated by solving a three-dimensional boundary-value problem in boundary-fitted coordinates for the equations of dynamics, density constituents, and turbulence characteristics. Results related to simulations of the barotropic tide in the Red Sea and to the internal tide in the Strait of Bab el Mandeb are presented. 相似文献
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The nonhydrostatic boundary problem for an arbitrary three-dimensional domain with a seamount is considered. The problem is integrated into curvilinear boundary-fitted coordinates on a nonuniform grid. In order to identify nonhydrostatic effects the grid is condensed on the slopes of the seamount preserving a coarse resolution in the rest of the domain, where the problem is solved in the hydrostatic approximation. Calculation results for the nonhydrostatic tidal dynamics and hydrology of the Strait of Messina in the area of a seamount are presented. 相似文献
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In order to determine robustness of the models based on the viscous shallow-water equations in the boundary-fitted coordinates the solution characteristics of the boundary-value problem are compared for different forms of equations in contravariant, covariant and Cartesian presentations of the velocity. Distinctions between these forms associated with presentation of advection and eddy viscosity in their approximation on a curvilinear grid are established. A boundary-value problem for the tidal dynamics computation in the Strait of Messina (Mediterranean Sea) is formulated with use of different forms of equations in the boundary-fitted coordinates. An estimation and comparison of the modelling results are performed. 相似文献
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