Modeling oil spills transportation in seas based on unstructured grid, finite-volume, wave-ocean model
Modeling oil spills transportation in seas based on unstructured grid, finite-volume, wave-ocean model
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基于非结构化网格、有限体积、波浪海洋模型的海上溢油输送建模
DOI：
10.1016/j.ocemod.2010.09.005
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发表时间：
2010
期刊：
影响因子：
3.2
通讯作者：
Shen Yongming
中科院分区：
文献类型：
--
作者：
Wang Jinhua;Shen Yongming
建立了一个三维综合模型，用于模拟海上溢油的运移和去向。该模型包含两个主要模块：流模块和传输-命运模块。流动模块采用非结构有限体积波-海耦合模型。使用非结构化网格为潮汐小溪、障碍物和岛屿等复杂几何形状的水流建模提供了极大的灵活性，在感兴趣的区域而不是其他地方具有精确的网格分辨率。在输运-命运模块中，采用粒子跟踪法求解油的分散问题。水平扩散是在蒙特卡罗框架下使用随机游走技术模拟的，而垂直扩散过程是基于朗文方程求解的。该模型模拟了平流、表面扩散、蒸发、溶解、乳化、湍流扩散等对油颗粒运动影响最大的过程，以及油颗粒与岸线的相互作用、沉积作用以及油的粘度、密度和表面张力的时间变化。给出了两种理想情况：圆形湖泊风生长表面重力波和具有弯曲海岸线的大陆架淡水排放的数值模拟与解析解和数值模拟结果的详细比较。通过使用非结构化非重叠三角形网格单元更好地拟合海岸线的曲率，所开发的模型系统在模拟溢油轨迹方面提供了更高的数值精度。此外，在模拟近海石油轨迹时，还必须注意选择水平和垂直分辨率。
A three-dimensional integrated model is developed for simulating transport and 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, with refined grid resolution in regions of interest and not elsewhere. 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. Detailed comparisons of simulations with analytical solutions and numerical simulations made with the popular structured finite difference model ROMS (the Regional Ocean Modelling System) for two idealized cases: wind-induced long-surface gravity waves in a circular lake and freshwater discharge onto the continental shelf with curved coastlines, are presented. With a better fit to the curvature of the coastline using unstructured nonoverlapping triangle grid cells, the developed model system provides improved numerical accuracy in simulating the oil spill trajectory. Also keep in mind that attention must be paid to choose the horizontal and vertical resolution in simulating the oil trajectory in the coastal ocean.
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影响因子：
5
作者：
Shuangqiang Wang;Y. Shen;Y. Zheng
通讯作者：
Shuangqiang Wang;Y. Shen;Y. Zheng
影响因子：
2.2
作者：
J. Beckers;M. Rixen
通讯作者：
J. Beckers;M. Rixen
影响因子：
3.2
作者：
Shchepetkin, AF;McWilliams, JC
通讯作者：
McWilliams, JC
影响因子：
--
作者：
Changsheng Chen;Haosheng Huang;R. Beardsley;Hedong Liu;Qichun Xu;G. Cowles
通讯作者：
Changsheng Chen;Haosheng Huang;R. Beardsley;Hedong Liu;Qichun Xu;G. Cowles
DOI：
10.1007/bf02408134
发表时间：
1986-05
期刊：
--
影响因子：
--
作者：
A. Elliott
通讯作者：
A. Elliott