Thermal Conductivity of Three‐Dimensional Yukawa Liquids (Dusty Plasmas)

Abstract

An improved method is proposed to investigate the behavior of a Yukawa liquid under the action of an external field strength using computer simulated nonequilibrium molecular dynamics. The thermal conductivity calculations with appropriate normalizations, in the limit of low value field strengths, are estimated over a wide range of the Coulomb coupling and screening strengths. The new simulations provide more reliable data for the thermal conductivity than the previously known results for the Yukawa liquids. The calculations show that the thermal conductivity is dependent on both the Coulomb coupling and screening parameters in the threedimensional (3D) Yukawa liquids. The low value field strength simulation data are found to obey the universal and quasiuniversal scaling. It is shown that the homogenous nonequilibrium method can be used to predict the thermal conductivity in Yukawa systems and to understand the fundamental features of 3D dusty plasma liquids.

Thermal Conductivity and Non-Newtonian Behavior of Complex Plasma Liquids

“…Yukawa model has been employed in many physical and chemical systems (for instance, biological and pharmaceutical sciences, colloidal and ionic systems, space and environment sciences, physics and chemistry of polymers and materials, etc.) [1][2][3][4][5][6][7][8]. In the present case, the interaction of potential energy of particles is in Yukawa form:…”

“…The main goals of this chapter are to study thermal conductivity (λ) along with latice correlation (long-range crystalline order) at the corresponding plasma states and to extend the set of plasma states (Γ, κ) by using the same method as introduced by Shahzad and He [3] with diferent system sizes (N). The efect of external force ield strengths on Ψ(t) and corresponding λ values of complex Yukawa liquids of dust particles is another interesting task that is calculated under near-equilibrium condition.…”

“…Average interparticle interaction is frequently considered to be isotropic and basically repulsive and approximated by Yukawa interaction potential [1][2][3]. Yukawa model has been employed in many physical and chemical systems (for instance, biological and pharmaceutical sciences, colloidal and ionic systems, space and environment sciences, physics and chemistry of polymers and materials, etc.)…”

“…According to non-Hamiltonian dynamics, generalization of linear response theory, proposed by Evans, for system moving with equations of motion and recently detailed understanding of Ewald-Yukawa sums [1][2][3] allows to present thermal conductivity as:…”

“…A reliable knowledge of transport data is also important for optimization of technological processes and apparatus design in various engineering and science ields (incl. thermoelectric devices) and, in particular, when provision of precise data for parameters of heat, mass, and momentum transport is required [1][2][3]. In thermophysical properties of luids, chemical properties remain unafected, but physical properties of material are changed by variable temperature, composition, and pressure.…”