Tidal Current Numerical Simulation And Sedimental Siltation Analysis Of 300,000-ton Crude Oil Dock Of Lanshan Port Area, Rizhao Port

This paper introduces the importance of the tidal current numerical simulation(TCNS) and the calculation of the sediment siltation. It discusses the status of TCNS and focuses on the calculation methods of the shallow water hydrodynamics and sediment siltation.The 300,000-ton crude oil dock of Lanshan port area, Rizhao Port is researched in this paper. The tidal current governing equation is the 2-D shallow water equation. The unregular triangular meshes are used here, which can simulate the variety of the coasting trend and focus on the key region. The paper disperse the governing equation through the finite difference method within the time forward difference scheme.The simulation result is coincident to the fact through the contrast between the calculation result and the observed data. Based on the result, the paper simulates the flow field transformation after the three crude oil dock project being disposed, analyzing the change of velocity and direction of flow. The calculation formula and parameter of sediment siltation should accord with the arenaceous and silt coast condition. The back and sudden magnitude siltation quantity is calculated here.The simulation and siltation calculation results prove that, the port area is suitable to build deep-water dock, the project is reasonable, the water depth of basin can be maintained by the dredging, and the basin has no sudden magnitude siltation problem. The paper advises to select and use the project which is optimum in the amount of engineering works and cost because of the tiny difference of the change of the velocity and direction of flow and sediment siltation amount between the three project.