Kinetic-model description of dense hard-sphere fluids

Abstract

A kinetic model based on the Enskog transport equation is proposed as a description of time correlation functions in a dense hard-sphere fluid at arbitrary wavelengths and frequencies. The kinetic equation has the desired properties with respect to short-time behavior, transport coefficients, and thermodynamics. It is capable of describing the dynamic structure factor in liquid argon if the collision frequency were scaled with wavelength.