规划工程建设对渤海湾水交换能力的影响

建立了渤海平面二维水动力数学模型和平面二维对流扩散模型,使用有限差分的ADI方法对模型进行离散,模拟了渤海湾内规划工程建设前后的交换率,得到了渤海湾水交换能力的空间分布。研究结果表明,渤海湾西南部地区的水交换能力最差,规划工程实施后,渤海湾湾口至湾顶的中间带区域交换率增大,增幅最大可达50%以上,其余大部分区域交换能力减小。

Influence of planned project in Bohai Bay on its water exchange ability

In this paper,a two-dimensional hydrodynamic model and a two-dimensional advection-diffusion model of Bohai were developed.The finite difference method ADI was used to solve the models.The water exchange of Bohai Bay was calculated by the numerical model,and the distribution of water exchange ability of Bohai Bay was obtained.The results show that the water exchange of the southwest part in Bohai Bay is the slowest.After the implementation of the planned projects in Bohai Bay,the exchange rate increases in the middle region from bay mouth to bayhead.The maximum increment reaches about 50%.Exchange rate reduces in most of the remaining region.