par Palyvos, John J.A.;Davis, Ted H.T.;Misguich, Jacques 
;Nicolis, Grégoire
Référence The Journal of Chemical Physics, 49, 9, page (4088-4095)
Publication Publié, 1968
;Nicolis, Grégoire Référence The Journal of Chemical Physics, 49, 9, page (4088-4095)
Publication Publié, 1968
Article révisé par les pairs
| Résumé : | The transport theory of liquids presented by Prigogine, Nicolis, and Misguich (PNM) is compared to experiment. The theoretical formulas are written in reduced form and a generalized plot of the reduced shear viscosity is given. The truncated Lennard-Jones potential-energy model is used. The liquids studied are argon, krypton, and xenon. Along the vapor-pressure curve, the agreement between the observed and predicted temperature dependence of the shear viscosity is rather poor. In the same region agreement between the observed and predicted temperature dependence of the thermal conductivity and bulk viscosity is fairly good, although the available bulk-viscosity data are subject to rather large experimental uncertainties. The relative contributions of the strongly repulsive (hard-core) part and of the soft continuous (Lennard-Jones potential-energy) part of the molecular interactions are examined for the transport coefficients. It is observed that some of the computationally difficult terms are negligible. The PNM theory is compared to the Rice-Allnatt (RA) theory. It is concluded that where comparisons are possible the PNM theory agrees somewhat better with experiment than does the RA theory when the predictions of both theories are based on the same values for the pair-correlation function. An Erratum to a previous Note Q. Chem. Phys. 48, 951 (1968)] on the PNM theory is given in the Appendix. |
