A porous cavity filled with methane (C1), -butane , and dodecane (C12) at a pressure of is used to investigate numerically the flow interaction due to the presence of thermodiffusion and buoyancy forces. A lateral heating condition is applied with the left wall maintained at and the right wall at . The molecular diffusion and thermal diffusion coefficients are functions of temperature, concentration, and viscosity of mixture components. It has been found that for permeability below the thermodiffusion is dominant; and above this level, buoyancy convection becomes the dominant mechanism. The variation of viscosity plays an important role on the molecular and thermal diffusion.
Soret Effect for a Ternary Mixture in Porous Cavity: Modeling With Variable Diffusion Coefficients and Viscosity
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Jaber, T. J., Yan, Y., and Saghir, M. Z. (August 1, 2008). "Soret Effect for a Ternary Mixture in Porous Cavity: Modeling With Variable Diffusion Coefficients and Viscosity." ASME. J. Fluids Eng. August 2008; 130(8): 081703. https://doi.org/10.1115/1.2960492
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