Research on the numerical simulations of marine hydrodynamics and pollutant diffusion in Bohai Bay

摘要

In this paper, the two-dimensional hydrodynamic mathematical model of Delft 3D was used to evaluate the hydrodynamic behaviour of Beidaihe Bay, and also to simulate the diffusion of pollutants in the Beidaihe bay. The chemical oxygen demand, nitrite nitrogen, total phosphorus content and heavy metal content in Bohai bay was analyzed, and the present situation of shallow water quality was also analyzed. Coupled simulation of coastal water quality with flow module and WAQ module in Delft 3D, the diffusion characteristics of pollutant emission were obtained. The study of impact from land-source pollution in Beidaihe Bay helps in further understanding the existing pollution status and provides a better view of land-source pollution to the general public.