A Numerical Model for Prediction of Oil Slick Movement from Spill Accident Between Khark Island and Busher Port in The North Coastal of Persian Gulf in Summer

Message:
Abstract:
Introduction
This paper presents a three- dimensional numerical model based on 3- D Navier – Stokes and continuity equations. The model is used to simulate the prediction of the movement of oil slicks from spill accident in region between Khark Island and Busher Port in the north coastal of Persian Gulf.
Material And Method
A three – dimensional model is developed based on the mass transport equation to predict the movement of oil particles in the water column. The model uses Boussinesq approximation as Lipps. For the advection term in the model an upwind weighted، multidimensional positive definite advection transport algorithm (MPDATA) is used. Base on this algorithm an explicit finite difference scheme that uses an anti-diffusive velocity sense for equilibrium diffusion effect is used. Densities of the oil and water، wind speed and horizontal and vertical diffusion coefficients are variable in the model.
Results
The computational domain covers an area of 555180 km2 with 11346 grids and x  y  3000 m in spill point، 21 km offshore. The model predicts concentration distribution of oil particles and current speeds and directions for 1. 7، 7 and 14 hours in summer after spill accident in 5، 10 and 15 meters levels. Numerical results show that particles spreading are towards Busher Port in summer. There is good agreement with valid theories and experiment of data runs.
Discussion
This research can be helpful to predict the movement of oil pollution at sea to collect pollution from spill accident to avoid the risk of moving it to the beach.
Language:
Persian
Published:
Journal of Environmental Sciences and Technology, Volume:16 Issue: 4, 2015
Pages:
27 to 52
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