An equation of state for two-ceInter Lennard-Jones fluids

A new equation of state (EOS) is proposed for the Helmholtz energy F of twoceInter Lennard Jones fluids. The EOS is written in the Ibrm of a generalized van der Waals equation, F=F. + FA, where F. accotmts for the hard-body iInteraction and F A for the attractive dispersion lorces. The equation is constructed on the basis of previously published data sets and results from new extensive computer simulation studies. It correlates pressures and iInternal energies over a wide fluid range Ibr two-ceInter model fluids with elongations up to 0.67 in reduced units with a high accuracy and shows an excellent description of the vapor 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.