Volumetric relaxation in simple liquid: Molecular dynamics simulation

The example of a mixture of simple liquids with Lennard—Jones potentials and soft spheres is used for considering the general principles of relaxation of energy in dense media. The processes of relaxation to uniform velocity distribution are studied, and the main stages of relaxation from nonisothermal state are identified. The dependences of characteristic relaxation times on parameters of the medium such as the density, initial temperature, and the mass ratio of components of the mixture are obtained. The results are compared with the data on nonideal plasma for determining the importance of the concrete interaction potential.