AN EQUATION OF STATE FOR 2-CENTER LENNARD-JONES FLUIDS

A new equation of state (EOS) is proposed for The Helmholtz energy F o f two-center Lennard-Jones fluids. The EOS is written in the form of a generalized van der Waals equation, F = F-H + F-A, where F-H accounts for the hard-body interaction and F-A for the attractive dispersion f orces. The equation is constructed on the basis of previously publishe d data sets and results from new extensive computer simulation studies . It correlates pressures and internal energies over a wide fluid rang e for two-center model fluids with elongations up to 0.67 in reduced u nits with a high accuracy and shows an excellent description of the va por-liquid coexistence properties. Comparisons of results from the new EOS with other data sets and recently published VLE from the NpT plus test particle method show very good agreement.