Yangtze Delta Numerical Simulation Of Salinity

Because of the mutual growth and decline of runoff and tied, salinity intrusion of Yangtze estuary is complex. Referring previous research accomplishment and utilizing the information of field measurement, regular patterns of salinity intrusion are obtained by analysis of all kinds of factors such as riverbed and power property.Using Microsoft Visual C++, complete simulation system of 2D & 3D tidal estuary current-salinity including builds mould, calculation and demonstration is developed. A new concept of Computing Process Visualization is imported in the system.Model including Hangzhou gulf and Yangtze estuary is simulated by 2D mould. Verification result is consistent with field data. Using all kinds of dynamic combinations to imitate, and contrasting with the analysis result, further law of power factor and influence is obtained.Tide and salinity in north channel area is studied by 3D model. Comparing the salinity gradient and water level gradient in tide period, regularity of the effect on tidal structure is established. Tide and salinity change of different depth plan is analysed combine the channel training project.