A cross-scale numerical modeling system for management support of oil spill accidents

作者：Azevedo Alberto^*; Oliveira Anabela; Fortunato Andre B; Zhang Joseph; Baptista Antonio M

来源：Marine Pollution Bulletin, 2014, 80(1-2): 132-147.

DOI：10.1016/j.marpolbul.2014.01.028

• Oil spill modeling
• Eulerian-Lagrangian methods
• Unstructured grids
• Oil weathering processes
• Coastal pollution

A flexible 2D/3D oil spill modeling system addressing the distinct nature of the surface and water column fluids, major oil weathering and improved retention/reposition processes in coastal zones is presented. The system integrates hydrodynamic, transport and oil weathering modules, which can be combined to offer different-complexity descriptions as required by applications across the river-to-ocean continuum. Features include accounting for different composition and reology in the surface and water column mixtures, as well as spreading, evaporation, water-in-oil emulsification, shoreline retention, dispersion and dissolution. The use of unstructured grids provides flexibility and efficiency in handling spills in complex geometries and across scales. The use of high-order Eulerian-Lagrangian methods allows for computational efficiency and for handling key processes in ways consistent with their distinct mathematical nature and time scales. The modeling system is tested through a suite of synthetic, laboratory and realistic-domain benchmarks, which demonstrate robust handling of key processes and of 2D/3D couplings. The application of the modeling system to a spill scenario at the entrance of a port in a coastal lagoon illustrates the power of the approach to represent spills that occur in coastal regions with complex boundaries and bathymetry.

• 出版日期2014-3-15