Abstract
General expressions for the translational and vibrational contributions, λTT, λTT, λTT and λTT, to the thermal conductivities of dilute molecular gases are presented. Numerical results are achieved by combining: approximations to deal with inelastic collisions; correlations for the reduced collision integrals Ω(2,2)∗ and Ω(1,1)∗ based on the principle of corresponding states; and experimental data on vibrational relaxation. Illustrative calculations are given for N2 and I2 gases for both equilibrium and non-equilibrium cases. They show that effects of vibratrional-translated non-equilibrium on thermal conductivity may be substantial and important.
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