In order to study the diffusion, migration, and distribution of pollutants among overlying waterbody and porous seabed under wave conditions, a dynamic coupling numerical model is proposed. In this model, the coupling...In order to study the diffusion, migration, and distribution of pollutants among overlying waterbody and porous seabed under wave conditions, a dynamic coupling numerical model is proposed. In this model, the coupling between wave field of overlying waterbody and seepage of porous bed, the capture and release of pollutants in porous media, and the transport process between the two different regions are taken into account. We use the unified equa tions for pressure correction and pollutant concentration to solve the numerical model, which avoids repeated iteration on the interface boundary. The model is verified by several case studies. Afterwards, the processes involving release of pollutant from porous seabed and transportation to overly ing waterbody under different wave conditions are investi gated. The results show that the water depth, wave height, and wave period have great influences on the release, cap ture, and transport processes for phosphorus pollutant.展开更多
基金supported by the National Natural Science Foundation of China(11032007)the Key Instrument Developing Project of the CAS(ZDYZ2012-1-08-02)
文摘In order to study the diffusion, migration, and distribution of pollutants among overlying waterbody and porous seabed under wave conditions, a dynamic coupling numerical model is proposed. In this model, the coupling between wave field of overlying waterbody and seepage of porous bed, the capture and release of pollutants in porous media, and the transport process between the two different regions are taken into account. We use the unified equa tions for pressure correction and pollutant concentration to solve the numerical model, which avoids repeated iteration on the interface boundary. The model is verified by several case studies. Afterwards, the processes involving release of pollutant from porous seabed and transportation to overly ing waterbody under different wave conditions are investi gated. The results show that the water depth, wave height, and wave period have great influences on the release, cap ture, and transport processes for phosphorus pollutant.
