Depth-averaged two-dimensional numerical simulation for curved open channels with vegetation

The 2-D k-e turbulence hydrodynamic model for curved open channel flow in curvilinear coordinates was developed to simulate the hydrodynamic behavior of turbulent flow in open channel partially covered with vegetation.In the model,the effect of vegetation on flow was treated both by drag force method and equivalent resistance coefficient method.The validity of simulation result is verified by model test result including the contour line map of water level,velocity vector and sectional velocity distribution.The calculated results show that the depth-averaged numerical model using the drag force method and the equivalent resistance coefficient method to treat the vegetated vesistance can be applied to simulate the flow of riverside wetland and river with vegetation.