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   Determination of CO2 gas diffusivity in nanofluids: numerical modeling study  
   
نویسنده dehghan peymaneh ,mohammaddoost hamed ,azari ahmad
منبع journal of oil, gas and petrochemical technology - 2023 - دوره : 10 - شماره : 1 - صفحه:60 -69
چکیده    In this study, a three-dimensional model was examined for the evaluation of co2 diffusivity in pure water and silicon oxide, aluminum oxide and titanium oxide nanofluids with the concentrations of 0.05, 0.1, and 0.2 wt%, respectively. different parameters such as temperature and the nanoparticles weight percentage on co2 diffusivity in a diffusivity cell were studied in comsol software. next, co2 diffusivity was compared with the experimental results. the modeling results showed that water was saturated with gas at 36,000 seconds, and the highest amount of absorbed gas happened at 0.32 m. the cfd results were then validated with the experimental data. furthermore, temperature was found to have a significant effect on the diffusivity, and it improved by increasing nanofluid concentration until the critical value of 0.1 wt% in all conditions. moreover, tio2 nf was introduced as an appropriate nanofluid for the phenomenon of mass diffusivity
کلیدواژه CO2 diffusivity COMSOL software Nanofluid pressure decay method numerical modeling
آدرس persian gulf university,, faculty of petroleum, gas and petrochemical engineering ,, department of chemical engineering, Iran, islamic azad university, shiraz b ranch, school of engineering, department of chemical engineering, Iran, persian gulf university, applied computational fluid dynamics research group, oil and gas research center. faculty of petroleum, gas and petrochemical engineering, department of chemical engineering, Iran
 
     
   
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