Vertical 2-D water-sediment transport numerical model for a river-style reservoir

Based on the vertical 2-D hydrodynamic model and the sediment model,this paper presents a 2-D sediment model.The main characteristics of this model are follows:the hydrodynamic model is an oblique press model so that it can reflect the influence of water temperature on hydrodynamics and suspending sediment.The numerical solution to the sediment equation uses a fractional step procedure so that it can simplify the elution process.The cohesive sediment and the non-cohesive sediment are simulated by the different methods.Mme empirical formulas are used to calculate the model parameters under the condition that little field data would be available.Rnally,the application of this model is studied according to the field data, and the results indicate that the relative errors of the simulating value and the field value of suspending sediment are small and their space-time distribution characteristic are similar to each other.At the same time,this rmdel can simulate the distribution characteristics of the temperature and the sediment which are accurately controlled by the outflow and inflow in the head and trail of a reservoir.