Theoretical analysis and comparison with experimentation of the molecular and thermal diffusion coefficients for a ternary hydrocarbon mixture
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Abstract
The thermal diusion phenomena, also known as the Soret eect, is important for the study of compositional variation in hydrocarbon reservoirs. Several theoretical models have been developed over the years to predict the thermodiusion coefficient of an organic mixture. Firoozabadi et al. [1] developed an analytical relationship between the thermal, molecular, and pressure diusion coefficients based on the approach of Dougherty and Drickamer [2]. The distinctive feature of Firoozabadi's model is its ability to be used not only for binary mixtures but also for multicomponent mixtures. The verification of Firoozabadi's model by numerical simulations was limited to binary mixtures only because of a lack of experimental data on thermodiusion coefficients in multicomponent hydrocarbon mixtures. However, Platten et al. [3] were able to measure the thermodiusion coefficients of a ternary hydrocarbon mixture experimentally by utilizing the thermogravitational column technique, hence making it possible to verify the theoretical model. This paper will compare the density, thermodiusion, and molecular diusion coefficients obtained with the Fontainebleau benchmark values for binary mixtures of n-dodecane, isobutylbenzene, and tetrahydronaphtalene. The accuracy of the numerical results from the Firoozabadi's model for ternary hydrocarbon mixtures is investigated. Results reveal a positive agreement between experimental and numerical data.
© Walter de Gruyter
Articles in the same Issue
- Acknowledgement
- Contents of Volume 30 (2005)
- Analytical Subject Index
- Index of Authors
- Density, fractal angle, and fractal dimension in linear Zn electrodeposition morphology
- Accuracy of the theoretical calculation of the Soret coefficient for water–ethanol mixtures in comparison with experimental data
- Theoretical analysis and comparison with experimentation of the molecular and thermal diffusion coefficients for a ternary hydrocarbon mixture
- Close-to-Fourier heat conduction equation of solids of constant mass density
- Metrology of the thermodiffusion coefficients in a ternary system
- A mesoscopic approach to diffusion phenomena in mixtures
Articles in the same Issue
- Acknowledgement
- Contents of Volume 30 (2005)
- Analytical Subject Index
- Index of Authors
- Density, fractal angle, and fractal dimension in linear Zn electrodeposition morphology
- Accuracy of the theoretical calculation of the Soret coefficient for water–ethanol mixtures in comparison with experimental data
- Theoretical analysis and comparison with experimentation of the molecular and thermal diffusion coefficients for a ternary hydrocarbon mixture
- Close-to-Fourier heat conduction equation of solids of constant mass density
- Metrology of the thermodiffusion coefficients in a ternary system
- A mesoscopic approach to diffusion phenomena in mixtures
