Transport properties of dense fluids via spherical models of the interaction potential

The method for evaluation of the dense fluid viscosity and thermal conductivity (translational part) from intermolecular interaction information is derived on the basis of the local similarity principle. The non-equilibrium criteria of mapping a real-system interaction function U r( R) to the refere...

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Bibliographic Details
Published in:Physica A 1991-10, Vol.178 (1), p.123-148
Main Authors: Nebelenchuk, V.F., Mazur, V.A.
Format: Article
Language:English
Subjects:
Condensed matter: structure, mechanical and thermal properties
Diffusion and ionic conduction in liquids
Exact sciences and technology
Physics
Transport properties of condensed matter (nonelectronic)
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Summary:The method for evaluation of the dense fluid viscosity and thermal conductivity (translational part) from intermolecular interaction information is derived on the basis of the local similarity principle. The non-equilibrium criteria of mapping a real-system interaction function U r( R) to the reference Van der Waals potential U b( R, A) are formulated first. Then the density dependence for the kinetic effective hard-sphere diameter is studied. The test of the proposed approach has been carried out for a number of spherical potential models (Ne-Ne, Ar-Ar, Kr-Kr, Xe-Xe, CO 2-CO 2, N 2-N 2, O 2-O 2) in the range of the reduced densities 0.4< nΣ 3
ISSN:0378-4371
1873-2119
DOI:10.1016/0378-4371(91)90077-P