Title: Virial expansions and augmented van der Waals approach: Application to Lennard-Jones-like Yukawa fluid
Author(s):

	A. Trokhymchuk (Institute for Condensed Matter Physics of the National Academy of Sciences of Ukraine, 1 Svientsitskii St., 79011 Lviv, Ukraine ; Institute of Applied Mathematics and Fundamental Sciences, Lviv Polytechnic National University, 79013 Lviv, Ukraine) ,
	R. Melnyk (Institute for Condensed Matter Physics of the National Academy of Sciences of Ukraine, 1 Svientsitskii St., 79011 Lviv, Ukraine) ,
	I. Nezbeda (Faculty of Science, J.E. Purkinje University, 400 96 \'{U}st\'{\i} nad Labem, Czech Republic ; E. H\'ala Laboratory of Thermodynamics, Institute of Chemical Process Fundamentals, Academy of Sciences, 165 02 Prague 6, Czech Republic)

We argue that recently proposed [Melnyk et al., Fluid Phase Equilibr., 2009, 279, 1] a criterion to split the pair interaction potential into two parts, one of which is forced to be responsible for excluded volume in the system, results in the expressions for virial coefficients that improve the performance of the virial equation of state in general, and at subcritical temperatures, in particular. As an example, application to the Lennard-Jones-like hard-core attractive Yukawa fluid is discussed.

Key words: excluded volume, hard-core attractive Yukawa fluid, virial equation of state, second virial coefficient, van der Waals equation
PACS: 51.30.+i, 64.30.+t

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