The importance of connection between sea environmental problems and oil spill damages causes to develop oil spill numerical models. When pollution is entered from one source point to environment, based on pollution properties such as wind velocity, temperature and other water substances concentration, it begins to spread in horizontal and vertical direction. In development of computer sciences, applications of CFD in maritime industries are being feasible and important. Numerical approaches have evolved to a level of accuracy which allows them to be applied to oil slick computations. In this thesis, using MIKE3 Software, the pollution spreading of oil spill was simulated for the Assaluye Port in August and September of 2008. Therefore, firstly, Hormoz strait was chosen as the open boundary in the Persian Gulf. Then, water level fluctuations time series near the Hangam Island as the closest position to hormoz strait was inserted to model as a boundary condition. Also wind speed and direction time series were considered in Assaluye Port. In continous, to solve turbulent diffusion term in navier-stoks equations, turbulent hydrodynamic equations were considered by smagorinsky formulation. Surface velocity and water level fluctuations of Assaluye terminal were validated by experimental data, earned from currentmeters such as buoys. By imposing current velocity of hydrodynamic module to particle analysis module, emulsion, evaporation, dissolution, total oil and oil spill fate was determined to prevent pollution expansion. The results of case studies showed that the model was able to perform logical prediction of oil trajectory and the fate of oil spill with acceptable precision in a rather short time. Furthermore, contingency plans noted that oil spill may move toward shore lines and damaged beaches near the Assaluyeh port. Based on result in 2008, oil spill movement was toward north-west of Assaluyeh port and at the end of time period, Siraf and Kangan Bandar was polluted and oil spill area that caused damages estimated about 62 km 2 . Also in 2012, this movement was toward south of Assaluye as a result of north-west wind in long time period and caused pollution of Nayb and Gulf. In this year oil spill area that covered the local position is about 28 km 2 . Finally, results showed that wind force, had an effective role in oil depreciation processes such as evaporation and oil in water emulsion. Based on these studies, evaporated oil and emulsification increased 92 percent and 69 percent, respectively. It is noted that dissolution decreased 17 percent. Therefore, the amount of oil that remains in Assaluye decreased about 30 percent in average as a result of wind shear stress effect. Keywords : hydrodynamic model, smagorinsky formula, Assaluye port, MIKE3 software