TWO DIMENSIONAL NUMERICAL SIMULATION OF FLOW AND GEO-MORPHOLOGICAL PROCESSES NEAR HEADLANDS BY USING UNSTRUCTURED GRID

摘要

A Two-dimensional mathematical model for simulation of flow and sediment transport is presented. The model simulates flow and geo-morphological processes in unsteady conditions simultaneously. The depth averaged Reynolds shallow water equations have been used for simulation of flow. The non-equilibrium method (by solving convection and diffusion equation) was used for sediment transport modeling and the source term was determined by Van Rijn equation. The solution scheme is finite volume method on the basis of flux difference splitting. The computational grid of this model is triangular unstructured with variable size in plan. Using the model for simulation of flow and sediment transport in a partially closed channel and comparing the results showed that the results obtained by the developed model were in reasonable agreement with the other models cited.