Topical issue on non-isothermal transport in complex fluids

Delgado‐Buscalioni, Rafael; Khayet, M.; Zárate, José M. Ortiz de; Croccolo, Fabrizio

doi:10.1140/epje/i2017-11539-y

Cited by 2 publications

(1 citation statement)

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“…In latter decades, and also in part due to the impulse given since 1994 by the International Meeting on Thermodifussion (IMT) series of conferences [15], research in thermodiffusion has progressed significantly. Nowadays, it can be safely stated that the measurement of Soret coefficients in binary mixtures has become routine, and that the various alternative experimental techniques used by different groups have progressed to a level where agreement is readily reached, and the experimental dataset of reliable S T values for different binary mixtures has increased steadily [15]. Maybe for these reasons the interest of the community has moved towards ternary mixtures in the last years, as a first step towards truly multicomponent mixtures.…”

Section: Introductionmentioning

confidence: 99%

Definition of frame-invariant thermodiffusion and Soret coefficients for ternary mixtures

Zárate

2019

Eur. Phys. J. E

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The definition of the Soret coefficient of a binary mixture includes a concentration prefactor, x(1 − x) when mol fraction x is used, or w(1 − w) when mass fraction w is used. In this paper the physical reasons behind this choice are reviewed, emphasizing that the use of these prefactors makes the Soret coefficient invariant upon change in the reference frame, either mass or molar. Then, it is shown how this invariance property can be extended to ternary mixtures by using an appropriate concentration prefactor in matrix form. The work is completed with some considerations of general non-isothermal diffusion fluxes, binary limits of the concentration triangle, selection of the dependent concentration in a ternary mixture, use of molar concentrations and, finally, extension to multi-component mixtures.

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Section: Introductionmentioning

confidence: 99%