The Critical Temperature and Properties of Real Gas from Low Order Perturbed Virial Expansions

0375836 - ÚCHP 2012 RIV NL eng J - Journal Article
Krejčí, J. - Nezbeda, Ivo
The Critical Temperature and Properties of Real Gas from Low Order Perturbed Virial Expansions.
Fluid Phase Equilibria. Roč. 314, - (2012), s. 156-160. ISSN 0378-3812. E-ISSN 1879-0224
R&D Projects: GA AV ČR IAA400720710
Grant - others:GA UJEP(CZ) 53223-15-0010-01
Institutional research plan: CEZ:AV0Z40720504
Keywords : perturbed virial expansion * critical point * real gas
Subject RIV: CF - Physical ; Theoretical Chemistry
Impact factor: 2.379, year: 2012

It is shown that a low-order expansion in powers of density about a short-range reference system, called a perturbed virial expansion, is superior to the common virial expansion and provides a reasonably accurate estimate of both the critical temperature of simple fluids and results on thermodynamics of real gas over a wider range of densities/temperatures. The results are presented for three common van der Waals hard-core models (square-well, Yukawa, and Sutherland) and for the realistic Lennard-Jones fluid.
Permanent Link: http://hdl.handle.net/11104/0208391