Experimental study of the heat transport processes in dusty plasma fluid

Abstract

The results are given of an experimental investigation of heat transport processes in fluid dusty structures in rf-discharge plasmas under different conditions: for discharge in argon, and for discharge in air under an action of electron beam. The analysis of steady-state and unsteady-state heat transfer is used to obtain the coefficients of thermal conductivity and thermal diffusivity under the assumption that the observed heat transport is associated with a thermal conduction in the dusty component of plasmas. The temperature dependence of these coefficients is obtained, which agrees qualitatively with the results of numerical simulation for simple monatomic liquids.

Numerical experiments on 2D strongly coupled complex plasmas

“…Note that this tendency is contradictory with that given by the analytical model in [14], which predicts an increase of λ with increase of damping rate and was confirmed by their experiment [14]. However, this model is based on an empirical relation between diffusion and heat conduction coefficients obtained by fitting simulation results for threedimensional (3D) simple liquid without damping, and their experiment was also performed in a 3D complex plasma liquid [14]. Whereas in our simulation we study 2D systems covering both liquid and solid states and/or with a liquid-solid mixture phase.…”

Time-correlation functions and transport coefficients of two-dimensional Yukawa liquids

“…A recent experimental measurement of the thermal conductivity was reported for a 2D liquid in [28], following earlier measurements in 2D crystals [29] and liquids in a quasi-2D system [30].…”

Numerical simulations of thermal conductivity in dissipative two-dimensional Yukawa systems

“…First results on the measurements of thermal conductivity for dust component in complex plasma were reported in [16][17][18]. Namely, in [16] the thermal conductivity in 2D crystalline lattices was studied.…”