Visco-elastic fluid simulations of coherent structures in strongly coupled dusty plasma medium

TL;DR

This paper investigates the nonlinear dynamics of visco-elastic fluids in strongly coupled dusty plasma media, focusing on the evolution of vorticity patches and comparing results with Newtonian fluids and MD simulations.

Contribution

It provides new insights into the nonlinear behavior of visco-elastic dusty plasma using a generalized hydrodynamic model, including comparisons with other simulation methods.

Findings

Coherent vorticity structures are studied within the GHD framework.

The model successfully captures nonlinear features of dusty plasma dynamics.

Comparisons show consistency with MD simulations and Newtonian fluid behavior.

Abstract

A generalized hydrodynamic (GHD) model depicting the behaviour of visco-elastic fluids has often been invoked to explore the behaviour of a strongly coupled dusty plasma medium below their crystallization limit. The model has been successful in describing the collective normal modes of the strongly coupled dusty plasma medium observed experimentally. The paper focuses on the study of nonlinear dynamical characteristic features of this model. Specifically, the evolution of coherent vorticity patches are being investigated here within the framework of this model. A comparison with Newtonian fluids and Molecular Dynamics (MD) simulations treating the dust species interacting through the Yukawa potential has also been presented.