Development of an integrated model system to simulate transport and fate of oil spills in seas  

作　　者：WANG JinHua & SHEN YongMing State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology,Dalian 116023,China 

出　　处：《Science China(Technological Sciences)》2010年第9期2423-2434,共12页中国科学（技术科学英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant No. 50839001);the National Basic Research Program of China ("973"Program)(Grant No. 2005CB724202);the Scientific Research Foundation of the Higher Education Institutions of Liaoning Province (Grant No. 2006T018)

摘　　要：A three-dimensional integrated model is developed for simulating transport and final fate of oil spills in seas.The model contains two main modules,flow and transport-fate modules.The flow module uses an unstructured finite-volume wave-ocean coupling model.Using unstructured meshes provides great flexibility for modeling the flow in complex geometries of tidal creeks,barriers and islands.In the transport-fate module the oil dispersion is solved using a particle-tracking method.Horizontal diffusion is simulated using random walk techniques in a Monte Carlo framework,whereas the vertical diffusion process is solved on the basis of the Langeven equation.The model simulates the most significant processes that affect the motion of oil particles,such as advection,surface spreading,evaporation,dissolution,emulsification and turbulent diffusion as well as the interaction of the oil particles with the shoreline,sedimentation and the temporal variations of oil viscosity,density and surface tension.The model simulates either continuous or instantaneous oil spills,and also other toxic matter.This model has been applied to simulate the oil spill accident in the Bohai Sea.In comparison with the observations,the numerical results indicate that the model is reasonably accurate.A three-dimensional integrated model is developed for simulating transport and final fate of oil spills in seas.The model contains two main modules,flow and transport-fate modules.The flow module uses an unstructured finite-volume wave-ocean coupling model.Using unstructured meshes provides great flexibility for modeling the flow in complex geometries of tidal creeks,barriers and islands.In the transport-fate module the oil dispersion is solved using a particle-tracking method.Horizontal diffusion is simulated using random walk techniques in a Monte Carlo framework,whereas the vertical diffusion process is solved on the basis of the Langeven equation.The model simulates the most significant processes that affect the motion of oil particles,such as advection,surface spreading,evaporation,dissolution,emulsification and turbulent diffusion as well as the interaction of the oil particles with the shoreline,sedimentation and the temporal variations of oil viscosity,density and surface tension.The model simulates either continuous or instantaneous oil spills,and also other toxic matter.This model has been applied to simulate the oil spill accident in the Bohai Sea.In comparison with the observations,the numerical results indicate that the model is reasonably accurate.

关 键 词：OIL-SPILL modeling FINITE-VOLUME method oil PARTICLES 3-D UNSTRUCTURED GRID 

分 类 号：X55[环境科学与工程—环境工程]