Three-dimensional numerical simulation for transport of oil spills in seas |
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| Authors: | Shou-Dong Wang Yong-Ming Shen Ya-Kun Guo Jun Tang |
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| Institution: | aState Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116023, PR China;bDepartment of Engineering, University of Aberdeen, Aberdeen AB24 3UE, UK |
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| Abstract: | This study extends previous two-dimensional research Wang, S.D., Shen, Y.M., Zheng, Y.H., 2005. Two-dimensional numerical simulation for transport and fate of oil spills in seas. Ocean Engineering 32, 1556–1571] to three dimensions in order to investigate the vertical dispersion/motion of the spilled oil slick, which is a more realistic model of the motion of the spilled oil. To this end, a three-dimensional (3-D) model, based on the particle approach, is developed for simulating oil spill transport and fate in seas. The amount of oil released at sea is distributed among a large number of particles tracked individually. These particles are driven by a combination of water current, wave- and wind-induced speed and move in a 3-D space. Horizontal and vertical diffusion are taken into account using a random walk technique. The model simulates the most significant processes which affect the motion of oil particles, such as advection, surface spreading, evaporation, dissolution, emulsification, turbulent diffusion, the interaction of the oil particles with the shoreline, sedimentation and the temporal variations of oil viscosity, density and surface tension. In addition, the processes of hydrolysis, photo-oxidation and biodegradation are also considered in this model. The model has been applied to simulate the oil spill accident in the Bohai Sea. |
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| Keywords: | Oil spills Oil particles 3-D Transportation Transformation Weathering The Princeton Ocean Model (POM) |
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