Liquid/Vapor Coexistence and Surface Tension of the Sutherland Fluid with a Variable Range of Interaction: Computer Simulation and Perturbation Theory Studies

0354871 - ÚCHP 2011 RIV US eng J - Journal Article
Melnyk, R. - Orea, P. - Nezbeda, Ivo - Trokhymchuk, A.
Liquid/Vapor Coexistence and Surface Tension of the Sutherland Fluid with a Variable Range of Interaction: Computer Simulation and Perturbation Theory Studies.
Journal of Chemical Physics. Roč. 132, č. 13 (2010), 134504-1-8. ISSN 0021-9606. E-ISSN 1089-7690
R&D Projects: GA AV ČR IAA400720710
Institutional research plan: CEZ:AV0Z40720504
Keywords : liquid-vapour transformations * meson field theory * monte carlo methods
Subject RIV: CF - Physical ; Theoretical Chemistry
Impact factor: 2.920, year: 2010

The liquid-vapor phase diagram and surface tension for the Sutherland fluids with a variable range of interaction have been determined by canonical Monte Carlo simulations and compared with the augmented van der Waals analytic theory. The theory, based on a short-range Yukawa reference, performs well for medium-range models but its accuracy deteriorates with the shortening range due to deteriorating accuracy of the underlined analytic mean spherical approximation solution for the reference Yukawa potential. The simulation results are also analyzed from the point of the extended principle of corresponding states and it is shown that the surface tension and also, to a certain degree of accuracy, the vapor-liquid coexistence curve satisfy the principle.
Permanent Link: http://hdl.handle.net/11104/0193777