Evolution of the mass-transfer processes in nonideal dissipative systems. I. Numerical simulation

Abstract

The results of numerical study of mass-transfer processes in quasi-two- and three-dimensional nonideal dissipative systems are presented. Simulations were performed for different types of model pair potentials of intergrain interaction that are various combinations of power-law and exponential functions. The calculations were performed in a wide range of parameters typical for laboratory dusty plasma experiments. It was shown that the dynamics of grains in liquidlike systems for short observation times is close to the evolution of thermal oscillations in the crystal lattice.

Superdiffusion of two-dimensional Yukawa liquids due to a perpendicular magnetic field

“…In strongly coupled systems, diffusive motion arises from the gradual escape of a particle from a cage (the so-called decaging motion) so that a particle becomes displaced. For normal diffusion, the VACF can be used to calculate the diffusion coefficient [55][56][57]. We will use the VACF for another purpose because we will find that the motion is superdiffusive.…”

Analysis of the interaction between particles in non-ideal quasi-equilibrium extended systems

“…The obtained dust parameters (l p , V 2 T = 2T /M) are given in Table 1 for the two experiments considered here. Table 1 also shows the results of the measurements of ν fr and Γ * and the characteristic frequency of dust oscillations ω c1 = [|U (l p )|/(πM )] 1/2 by an independent technique based on the analysis of the mass-transfer processes, D(t), for a small observation time [15]. The experimental pair functions g(l) are presented in Fig.…”

Longitudinal viscosity of two-dimensional Yukawa liquids

“…Green-Kubo relations are often used to calculate various transport coefficients, such as diffusion [49], shear viscosity [41,44], and thermal conductivity [50]. GreenKubo relations are for equilibrium conditions; they use microscopic random motion of particles to determine transport coefficients without any macroscopic gradients.…”