Vapour-liquid equilibrium properties for two- and three-dimensional Lennard-Jones fluids from equations of state

Vapour-liquid equilibrium properties for both three- and two-dimensional Le nnard-Jones fluids were obtained using simple cubic-in-density equations of state proposed by the authors. Results were compared with those obtained b y other workers from computer simulations and also with results given by ot her more complex semi-theoretical or semi-empirical equations of state. In the three-dimensional case good agreement is found for all properties and a ll temperatures. In the two-dimensional case only the coexistence densities were compared, producing good agreement for low temperatures only. The pre sent work is the first to give numerical data for the vapour-liquid equilib rium properties of Lennard-Jones fluids calculated from equations of state.