M. Schreiber et al., THERMAL-CONDUCTIVITY OF MULTICOMPONENT POLYATOMIC DILUTE GAS-MIXTURES, International journal of thermophysics, 18(4), 1997, pp. 925-938
A new expression for the thermal conductivity of an N-component polyat
omic gas mixture in the dilute-gas limit has been derived, based on th
e Thiljsse approximation. The results are presented in terms of experi
mentally accessible quantities to allow for easier calculation of the
thermal conductivity and easier interpretation of the experimentally a
vailable data The resulting expressions are much simpler than other fo
rmulae hitherto available. An additional new expression for the therma
l conductivity of an N-component polyatomic gas mixture has been deriv
ed by replacing the effective cross-section by their spherical limits.
These results are cast in a form which is analogous with, and no more
complicated than, the corresponding expressions for purely monatomic
mixtures.