Equation of state for the Lennard-Jones fluid based on the perturbation theory

F. F. Betancourt-Cárdenas, L. A. Galicia-Luna, S. I. Sandler

Research output: Contribution to journalArticle

19 Scopus citations


An easy-to-use equation of state for the Lennard-Jones fluid based on the Barker and Henderson perturbation theory is presented. The model uses the hard sphere as the reference fluid, with its properties described using the Carnahan-Starling equation of state and a shell approach to describe the radial distribution function. The contributions of first and second order terms in the perturbation series were calculated using molecular simulation and are compared with the proposed EoS. The equation presented is in good agreement with the molecular simulation data for the pressure and internal energy of the Lennard-Jones fluid. As the equation is based on the perturbation theory it over predicts the critical temperature found from molecular simulation. © 2007 Elsevier B.V. All rights reserved.
Original languageAmerican English
Pages (from-to)174-183
Number of pages155
JournalFluid Phase Equilibria
StatePublished - 1 Mar 2008
Externally publishedYes


Cite this