Number Density and Temperature Dependence of Self-diffusion Coefficient of Supercritical Ar Fluid

Abstract

In present study, motion of atoms in Ar fluid is simulated by molecular dynamics (MD) method at 75 thermodynamic conditions, by changing the temperature and the number density. Self-diffusion coefficient of Ar is calculated from the simulated time series data. The purpose of present study is to analyze number density and temperature dependence of the self-diffusion coefficient of Ar in fluid.