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Theoretical models for the thermo-gravitational separation process in porous media filled by N-component mixtures
Dimitri Mutschler1, Mohamed Aziz Larabi2, Abdelkader Mojtabi3
1Université Lyon 1, Université de Lyon, LMFA UMR CNRS 5509, 36, avenue Guy de Collongue, 69134, Ecully, France.
Abstract:
The aim of this work is to present a theoretical analysis of the separation of an N-component mixture. In this study, two analytical models explaining the thermo-gravitational separation of components in N-component mixtures for vertical cavity filled by a porous medium are presented and assessed. The basic state and the separation are expressed in terms of the separation ratio, and the Lewis, cross-diffusion and Rayleigh numbers. Our computational analysis confirms that, for the given values of the mass fractions, thermodiffusion can be measured with a thermo-gravitational column, strongly supporting the experimentally determined transport coefficients.
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