Prediction Of The Thermal Diffusion Coefficients For Hydrocarbon And Aqueous Alkanol Mixtures In Preparation For Foton M3 Mission
- Paper number
IAC-07-A2.3.07
- Author
Prof. Ziad Saghir, Ryerson University, Canada
- Year
2007
- Abstract
Flow due to thermodiffusion may change direction in fluid mixtures with the variation of composition and temperature. This occurrence remains an unraveled phenomenon in petroleum research. Using a modified theoretical approach developed by Pan et al [J. of Chemical physics, Vol 126, No 1, 2007], this paper evaluates the thermal diffusion factor in alkanol water mixtures, such as water-methanol, water-isopropanol and water-ethanol aqueous mixtures. The thermal diffusion factor is compared with available ground base experimental data. Results revealed an excellent agreement with the experiment and excellent accuracy of the model. In addition, the theory detected the sign change when the concentration of water is higher then the alcohol component in the mixture. Later the theory was used to predict the thermal and molecular diffusion coefficients for binary, ternary and multi-component hydrocarbon mixtures to be measured in microgravity in September 2007 on board FOTON M3 mission. The mixtures, which will be flown, are; Mixture 1:Dodecane (C12), Isobutylbenzene (IBB), Tetrahydronaphtalene (THN),Mixture 2:Dodecane(C12), n-Butane(C4), Methane(C1),Mixture 3:Water-Isopropanol, Mixture 4:Dodecane (C12), Isobutylbenzene (IBB), Tetrahydronaphtalene (THN), Decane. All the analysis is performed at a pressure ranging from 1 bar to 350 bars with a temperature variation from 328.15 to 338.15 degrees Kelvin. Results revealed the importance of measuring those coefficients in a convection free environment as the one available on board FOTON M3
- Abstract document
- Manuscript document
IAC-07-A2.3.07.pdf (🔒 authorized access only).
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