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On the Cross-diffusion and Soret Effect in Multicomponent Mixtures

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Abstract

The model of convection in a multicomponent fluid is considered taking into account the cross-diffusion and the Soret effect. It is shown that the cross-diffusion coefficients can be eliminated by a linear change of composition and the thermal diffusion coefficients. It allows a simple incorporation of cross-diffusion phenomena into the results obtained for the case of diagonal diffusion matrix. Applications to the modelling of multicomponent flows in microgravity and terrestrial conditions are discussed.

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Authors and Affiliations

  1. MRC, Department of Chemical Physics, Université Libre de Bruxelles, CP 165/62, av. F.D. Roosevelt 50, 1050, Brussels, Belgium

    Ilya I. Ryzhkov & Valentina M. Shevtsova

  2. Institute of Computational Modelling SB RAS, 660036, Krasnoyarsk, Russia

    Ilya I. Ryzhkov

Authors
  1. Ilya I. Ryzhkov
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  2. Valentina M. Shevtsova
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Correspondence to Ilya I. Ryzhkov.

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Ryzhkov, I.I., Shevtsova, V.M. On the Cross-diffusion and Soret Effect in Multicomponent Mixtures. Microgravity Sci. Technol 21, 37–40 (2009). https://doi.org/10.1007/s12217-008-9081-9

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  • DOI: https://doi.org/10.1007/s12217-008-9081-9

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