Molecular Dynamics Study of Dense Fluids

Abstract

A computer experiment has been performed to investigate dynamical properties of a fluid system composed of 864 particles interacting through a modified Lennard-Jones-type potential. The velocity autocorrelation functions are computed and discussed in comparison with the Enskog predictions. The correlation functions are found to be very similar to those of the effective hard sphere fluids after the lapse of about 8 successive collisions. The slow power-law decaying behavior in the time correlation function is observed for a fluid composed of particles interacting with a harshly repulsive core and an attractive potential.