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Transport coefficients of multi-component mixtures of noble gases based on ab initio potentials. Viscosity and thermal conductivity

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arxiv 2006.08687 v1 pith:DVFBTXYJ submitted 2020-06-15 physics.comp-ph physics.chem-phphysics.flu-dyn

Transport coefficients of multi-component mixtures of noble gases based on ab initio potentials. Viscosity and thermal conductivity

classification physics.comp-ph physics.chem-phphysics.flu-dyn
keywords conductivitythermalviscositycoefficientsinitiointeratomicmixturespotentials
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The viscosity and thermal conductivity of binary, ternary and quaternary mixtures of helium, neon, argon, and krypton at low density are computed for wide ranges of temperature and molar fractions, applying the Chapman-Enskog method. Ab initio interatomic potentials are employed in order to calculate the omega-integrals. The relative numerical errors of the viscosity and thermal conductivity do not exceed 1.e-6 and 1.e-5, respectively. The relative uncertainty related to the interatomic potential is about 0.1%. A comparison of the present data with results reported in other papers available in the literature shows a significant improvement of accuracy of the transport coefficients considered here.

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