Numerical Simulation For Tidal Current And Wind Waves In Tieshan Bay

Tidal currents, wind waves and other issues are closely related with coastal people andharbor construction in Tieshan Bay. Carrying out these research works on this area may haveimportant practical significance on harbor construction and coastal protection in Tieshan Bay,and would supplement research content of South China Sea. To evaluate the changes of tidalcurrent and wind waves influenced by harbor construction in Tieshan Bay, this thesis takeadvantages of FVCOM model and SWAN model.Firstly, three-dimensional tidal mathematical model has been established based onFVCOM model in this thesis. The trend of the general characteristics influenced by harborconstruction in Tieshan Bay has been analyzed. The changes of tidal level has been discussedwhich impacted by harbor construction at high water level and low water level of spring tide,middle tide and low tide in engineering district. The variation of surface velocity and velocitydistribution characteristics of different depths at flood fast tide time and ebb fast tide timewere also been explored. Three dimensional numerical simulations of tidal current resultssuggest that harbor construction has little effect on tidal level and tidal current field in TieshanBay. Conclusively, tidal level varied a little in the region and the velocity decreased slightly ingeneral at flood fast tide time and ebb fast tide time after the implementation of the project.High water level increased slightly. On the contrary, low water level decreased slightly. Butthe regulation of velocity of ebb current is larger than velocity of flood current has not beenaltered.Then, based on SWAN model, the Tieshan Bay’s wind waves model has been establishedwhich respectively considered different combination conditions of wind direction, wind speedand recurrence period. Wind waves field distribution results have obtained by numericalsimulating Tieshan Bay’s wind waves. Wind waves variation tendency influenced by harborconstruction and the characteristics of wind waves at different docklands or channels havebeen analyzed. Besides, berthing stability at different docklands has been discussed.Numerical simulation results show that the S-SSW waves to the greatest cause of the waveintensity, SE-SSE and SW-WSW second, E-ESE and W-WNW relatively small. The artificialisland of the project has played a very good cover role.From the results of numerical simulation for tidal current and wind waves in Tieshan Bay,this area is suitable for harbor construction and the harbor planning project is feasible. Afterthe implementation of harbor construction project in Tieshan Bay, the characteristics of tidalcurrent and waves would change a little. This thesis would provide some scientific basis toharbor construction and coastal activities, and may increase the study of hydrodynamiccharacteristics in South China Sea.