THE DENSITY PROFILES OF A LENNARD -JONES FLUID CONFINED TO A SLIT

Abstract

The structure of fluids confined by planar walls is studied using density functional theory. The density functional used is a generalized form of the hypernetted chain (HNC) functional which contains a term third order in the density. This term is chosen to ensure that the modified density functional gives the correct bulk pressure. The proposed density functional applied to a Lennard-Jones fluid confined to a slit for temperatures below the critical point. The agreement between the results of the density profiles obtained by the theory and computer simulation are good