连云港港主体港区水交换三维数值模拟

利用基于有限体积法的三维海洋数值模型FVCOM,建立了连云港浅滩海域的三维潮流数值模型和对流扩散模型。运用对流扩散模型,对连云港港主体港区的保守物浓度进行三维模拟计算,并对港池的三维水交换特征进行分析。结果表明,港池口门处的水交换能力最强,并向港池底部逐渐减小,港池表、底层水交换能力差别很小,主体港区的平均滞留时间、半交换时间和冲洗时间分别约为13、5、84 d。

Three-dimensional numerical simulation of water exchange in main port of Lianyungang port

Based on the three-dimensional ocean numerical model (FVCOM) in the theory of finite volume method,we establish the three-dimensional tidal model and convection-diffusion model in shallow waters of Lianyungang.With the advection-diffusion model,we calculate the concentration of the conservative in the main port of Lianyungang port and analyze the three-dimensional water exchange characteristics in the main port.The results show that the water exchange capacity of the entrance is the best and the water exchange capacity decreases from the entrance to the bottom in the main port.Also,the difference of water exchange capacity between the surface and the bottom is very small.The average residence time,semi-exchange time and flushing time of the main port are 13 d,5 d and 84 d respectively.