Study On Numerical Simulation Of Tidal Flow Of Yangxi Fishery Port Project

Yangxi fishery port is Located at the southwest coast of Guangdong Province, and Located at longitude 111°45'40 ", latitude 21°38'20". At present, the siltation at fishing port and channel is serious, and this seriously hampered the economic development of local fisheries. For the further development and utilization,the renovation and expansion of the fishery port is planed. In order to explore the feasibility of the development and utilization, the tidal flow field on the port coastal area was simulated, to understand the influence of the project to the natural flow pattern and flow field.Based on the analysis of the hydrometric and terrain data, a Two-dimensional mathematical model was established to study the influence of the project to the port.The main work of this paper including:( 1 ) With the vertical averaged two-dimensional mathematical model, to determine the relevant parameters and the model boundary conditions, and using the ADI finite difference method to obtain the numerical discrete solution.(2)According to the measured data and terrain data ,the reasonableness of results was verified.(3)The influence of the project to flow field and flow eigenvalue at feature points were studied.(4)Based on the analysis and comparative study of calculation results, the influence of the engineering to port, channel sediment movement was studied. Using standard algorithms the yearly siltation and siltation intensity after the port expansion was estimated, and this can provide accurate and reliable design parameters for engineers and technicians.The numerical simulation results agreed well with the measured values, indicating that the model has a good applicability and sufficient accuracy, and can simulate the flow field of the port well.