THE NUMERICAL SIMULATION FOR THE WASTEWATER DISCHARGE OF THE REACH OF WANZHOU IN THREE GORGES RESERVOIR

摘要

A non-horizontal multi-layer finite element model has been developed for studying the impact of Three George Project on pollutant transport patterns and water quality in Wanzhou Reach. In this method, the interfaces between layers are non-horizontal, which indicates both the water surface gradient and the variety of topography of riverbed. This method can improve the ability of the model boundary adaptation with actual natural geometry and the water surface. The field observation data is incorporated to determine the flow and pollutant transport parameters and then to test the rationality of these parameters. The good correlation revealed in the comparison between the computed and observed results in Wanzhou Reach indicates that the present model can be served as an effective tool for hydrodynamics and pollutant transport studies in large rivers.