防城港码头工程前后潮流场的数值模拟

基于双时间层的有限差分方法(ADI),建立了水深平均二维浅水潮流数学模型,采用逆风格式和追赶法求解二维浅水方程,在对模型进行潮位验证和潮流验证的基础上,对防城港码头工程实施前后的潮流场进行了数值模拟研究。研究表明:该工程建设不会减少湾内纳潮量,不会对海域水动力学条件产生较大影响,只会对码头附近产生较小影响。

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.