8784

8145

كارشناسي ارشد

مكانيك

اصفهان: دانشگاه صنعتي اصفهان، دانشكده مكانيك

1392

دوازده،88ص.: مصور،جدول،نمودار

ص.ع.به فارسي و انگليسي

محمدعلي بدري

احمدرضا عظيميان

8/2/93

محسن ثقفيان، احمد صداقت

مهندسي مكانيك

ID8145

89 Simulation of Oil Pollution and Particles in the Persian Gulf near Assaluyeh Oil Terminal Due to Wind Tide and Dissoluble Effects Mohsen Faghihi Fard m faghihi@me iut ac ir Date of Submission 1 20 2014 Department of Mechanic Engineering Isfahan University of Technology Isfahan 84156 83111 Iran Degree M Sc Language FarsiSupervisor Assist Prof Mohammad Ali badri malbdr@cc iut ac ir Advisor Prof Ahmadreza Azimian a azimian@cc iut ac ir AbstractThe importance of connection between sea environmental problems and oil spill damages causes todevelop oil spill numerical models When pollution is entered from one source point toenvironment based on pollution properties such as wind velocity temperature and other watersubstances concentration it begins to spread in horizontal and vertical direction In development ofcomputer 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 oilslick computations In this thesis using MIKE3 Software the pollution spreading of oil spill wassimulated for the Assaluye Port in August and September of 2008 Therefore firstly Hormoz straitwas chosen as the open boundary in the Persian Gulf Then water level fluctuations time seriesnear the Hangam Island as the closest position to hormoz strait was inserted to model as a boundarycondition Also wind speed and direction time series were considered in Assaluye Port Incontinous to solve turbulent diffusion term in navier stoks equations turbulent hydrodynamicequations were considered by smagorinsky formulation Surface velocity and water levelfluctuations of Assaluye terminal were validated by experimental data earned from currentmeterssuch 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 pollutionexpansion The results of case studies showed that the model was able to perform logical predictionof 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 damagedbeaches 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 oilspill area that caused damages estimated about 62 km2 Also in 2012 this movement was towardsouth of Assaluye as a result of north west wind in long time period and caused pollution ofNayband Gulf In this year oil spill area that covered the local position is about 28 km2 Finally results showed that wind force had an effective role in oil depreciation processes such asevaporation and oil in water emulsion Based on these studies evaporated oil and emulsificationincreased 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 aresult of wind shear stress effect Keywords hydrodynamic model smagorinsky formula Assaluye port MIKE3 software

محمدعلي بدري

احمدرضا عظيميان

محسن ثقفيان، احمد صداقت