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Title: A cross-scale numerical modeling system for management support of oil spill accidents
Authors: Azevedo, A.
Oliveira, A.
Fortunato, A. B.
Zhang, J.
Melo Baptista, A.
Keywords: Oil spill modeling;Eulerian–Lagrangian methods;Unstructured grids;Oil weathering processes;Coastal pollution
Issue Date: Mar-2014
Publisher: Elsevier
Abstract: 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.
Appears in Collections:DHA/NEC - Comunicações a congressos e artigos de revista

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