Viscosity calculated in simulations of strongly-coupled dusty plasmas with gas friction

Abstract

A two-dimensional strongly-coupled dusty plasma is modeled using Langevin and frictionless molecular dynamical simulations. The static viscosity $\eta$ and the wave-number-dependent viscosity $\eta (k)$ are calculated from the microscopic shear in the random motion of particles. A recently developed method of calculating the wave-number-dependent viscosity $\eta (k)$ is validated by comparing the results of $\eta (k)$ from the two simulations. It is also verified that the Green-Kubo relation can still yield an accurate measure of the static viscosity $\eta$ in the presence of a modest level of friction as in dusty plasma experiments.

6 pages, 3 figures, Physics of Plasmas invited paper

References in corpus (7)

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Cited by in corpus (4)

• Green-Kubo relation for viscosity tested using experimental data for a 2D dusty plasma
• Frequency-dependent shear viscosity of a liquid 2D dusty plasma
• Structures and Diffusion of Two Dimensional Dusty Plasmas on One Dimensional Periodic Substrates
• Oscillation-like diffusion of two-dimensional liquid dusty plasmas on one-dimensional periodic substrates with varied widths