Theoretical models for the thermo-gravitational separation process in porous media filled by N-component mixtures
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- Mutschler, D., Larabi, M.A. & Mojtabi, A. Eur. Phys. J. E (2017) 40: 49. doi:10.1140/epje/i2017-11538-0
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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.