Numerical computation of tidal current field before and after quay project in the Fangcheng Harbor

A depth-averaged 2-D numerical model for unsteady tidal flow is established using the finite difference method on double time layer meshes.The 2-D shallow water equations are solved by upwind scheme and chase technique.The model is applied to simulate tidal circulation of the Fangcheng Harbor quay before and after the construction of the project,detailed model calibration and verification have been conducted with measured tidal current in the tide location and tide circulation.The overall performance of the model indicate that construction of the project will not reduce the tidal storage capacity of the bay,will not affect the hydrodynamics condition of sea area evidently,and will only have a little influence on the place near the quay.