Numerical simulation of thermal properties in two-dimensional Yukawa systems

New results obtained for thermal conduction in 2D Yukawa systems. The results of numerical study of heat transfer processes for quasi equilibrium systems with parameters close to conditions in laboratory experiments with dusty plasma are presented. The Green-Kubo relations are used to calculate thermal conductivity and diffusivity coefficients. For the first time the influence of dissipation (friction) on the heat transfer in non-ideal systems is studied. New approximation is suggested for thermal diffusivity. The comparison with the existing experimental and numerical results is shown.Comment: 18 pages, 9 figure

Structural phase transitions in the systems with isotropic repulsive potentials

A simple analytical approach for the calculation of the phase diagram for polymorphic fcc-bcc transition in systems with isotropic repulsive potentials is proposed. A comparison of the proposed approach with the existing numerical and theoretical data is presented for Yukawa and inverse-power potentials: the emphasis is on the Yukawa model. The influence of the non-linearity (of anharmonic corrections) of the pair interaction forces on the phase-equilibrium curves for fcc-bcc and solid-liquid phase transitions is considered

Influence of topological defects on mass transfer processes in two-dimensional nonideal systems

The results of a numerical study on the influence of topological defects on mass transfer processes are presented for two-dimensional nonideal systems. Calculations have been performed for Yukawa and inverse-power potentials in a wide range of parameters, corresponding to the experimental conditions in the laboratory dusty plasmas. The relations between a number of topological defects and diffusion coefficients for interacting particles are obtained for the first time