NUMERICAL PREDICTION OF OIL SPILL IN ENCLOSED COASTAL SEA

Abstract

 Oil spill accidents during the heavy rainfall and flood are reported. For the appropriate manipulation to the oil spilled to water area, it is needed to predict the temporal and spatial variation of oil spreading area.

 In this study, first, numerical simulation model of oil considering to the weathering processes of oil was developed, because the residential time of oil at sea area is becoming longer. Next, using this model, numerical simulation was carried out supposing the oil spill into enclosed coastal sea. Computed results shows that oil is decreased by the weathering and also changed to particulate component according the wave generations. Spatial distribution of oil slick at water surface is strongly affected by wind and its range is differ from other components that flow in water.