STUDY ON 1D AND 2D COUPLING FLOW AND SALINITY MODEL AT YANGTZE RIVER ESTUARY

摘要

1-D and 2-D coupling flow and salinity mathematical was established in this paper, in which Datong to Jiangyin reach was simulated by 1-D model and downstream Jiangyin simulated by 2-D model respectively. 1-D river-net mathematical model and 2-D horizontal mathematical model in generalized curvilinear coordinate are was established respectively, and then 1-D and 2-D model were coupled. The established 1-D and 2-D model was calibrated by field datum from Datong to Jiangyin reach and downstream Jiangyin, the calculated results was found agreeable with exact results, which verified established model's reliability and the model can be used to simulate the rules of flow and salinity at Yangtze River Estuary.