Abstract
The behavior of the transport coefficients related to diffusion, heat conduction, and their cross-processes in fluid mixtures near the consolute point and the liquid-vapor critical line is investigated. Simple crossover equations for the critical enhancement of those coefficients are developed by incorporating a finite cutoff and time-dependent correlation functions of the order parameter and of the entropy into decoupled-mode theory integrals. It is shown that the thermal conductivity of a binary mixture is nondivergent and the crossover from the critical background in the critical point to the regular background far from the critical point is elucidated. The crossover to the behavior of the thermal conductivity in the one-component limit is also discussed.
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Kiselev, S.B., Kulikov, V.D. Crossover behavior of the transport coefficients of critical binary mixtures. Int J Thermophys 15, 283–308 (1994). https://doi.org/10.1007/BF01441587
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DOI: https://doi.org/10.1007/BF01441587