ABSTRACT
Two mathematical models for 2-D depth-averaged flows namely the pseudoviscosity model and the k-E turbulence model are compared to evaluate their characteristics. applicability and performance. The results of two case studies show that the values of the model parameters of the pseudo-viscosity model are not unique and may require recalibration when the boundary conditions are changed. In the k-E model. the model parameters are constant and can be applied to most flow conditions. It is found that the k-E model can simulate the actual flow conditions better than the pseudo-viscosity model but it is more difficult to apply the k-E model to the cases of complicated flow geometry. The computation in the pseudo-viscosity model is simpler and can progress faster than the k-E model as less number of equations and less unknowns are involved.
