Simulation Analysis of Oil Spill Drift Diffusion in Jingtang Port Area
In order to analyze the impact of oil spill drift and diffusion in sea area of Jintang port,a two-dimensional tidal field numerical model was established for the entire Bohai Sea area based on the Navier-Stokes equation of three-way incompressi-bility and Reynolds values,obeying the assumption of Boussinesq and hydrostatic pressure.Based on hydrodynamics,the parti-cles are tracked according to the Lagrangian"oil particle"theory,the oil spill drift diffusion prediction model was applied to sim-ulate the drift diffusion process of the oil film in seawater under different working conditions.The results showed that the oil spill pollution had a certain impact on the nearby nature reserves,tourism and leisure areas,fish breeding and fishing areas and shore-lines,and the fishery and fishing areas near the Daqing river estuary had the greatest impact.The maximum diffusion area of the oil film in 72 h occurred during the strong wind and high tide in winter,and its area was 213.373 km2.The analysis and predic-tion of the trajectory of the oil film and the impact of the target in the sensitive area can provide certain basis and technical assis-tance for the emergency measures and marine environmental impact evaluation of the oil spill accident in the sea near Jingtang port.
two-dimensional hydrodynamic modeloil spills at seanumerical simulationoil spill spread
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