2D modelling of erosion/deposition processes with suspended load using

摘要: This work describes a finite volume model applied to solve the coupled shallow water/load transport equations, where low concentrations of sediment load are assumed so that concentration solid fraction is not influence equations governing dynamics. The unsteady simulation erodible bed requires special attention in discretization and friction source terms as important instabilities can arise some situations. upwind time variable slope presented provide an exact balance numerical fluxes guarantee steady-state solutions contrary pointwise formulation leads destroying computation. Robust schemes for both moving fixed boundaries. In last case technique provided keep bounded values CFL (Courant–Friedrichs–Lewy) greater than one therefore decreasing necessary computational cost.