Stabilization of Rayleigh-Taylor instability in a non-Newtonian incompressible complex plasma

Garai, Sudip; Banerjee, Debabrata; Janaki, M. S.; Chakrabarti, Nikhil

doi:10.1063/1.4916126

Cited by 16 publications

(7 citation statements)

References 33 publications

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“…As it does in fluids, viscosity in plasmas affects instabilities [10], waves [11][12][13], vortices [14], and heating [15]. Despite these similarities, plasmas have unusual viscosity properties because the underlying Coulomb forces have a long range, unlike the short-range interactions typical of liquids and gases.…”

mentioning

confidence: 99%

Overestimation of Viscosity by the Green-Kubo Method in a Dusty Plasma Experiment

Haralson

Goree

2017

Phys. Rev. Lett.

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confidence: 99%

Overestimation of Viscosity by the Green-Kubo Method in a Dusty Plasma Experiment

Haralson

Goree

2017

Phys. Rev. Lett.

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“…For the second, a choice of gradually increasing density against the gravity is chosen. The RT instability in the context of dusty plasma medium has been studied theoretically by many authors (d'Angelo 1993;Veeresha, Das & Sen 2005;Avinash & Sen 2015;Garai et al 2015;Garai 2016;Dolai & Prajapati 2018). The numerical work on this was reported by our group ) and the experimental work by Pacha et al (2012) and Pacha & Merlino (2020).…”

Section: Introductionmentioning

confidence: 85%

“…The RT instability in the context of dusty plasma medium has been studied theoretically by many authors (d'Angelo 1993; Veeresha, Das & Sen 2005; Das & Kaw 2014; Avinash & Sen 2015; Garai et al. 2015; Garai 2016; Dolai & Prajapati 2018). The numerical work on this was reported by our group (Das, Dharodi & Tiwari 2014) and the experimental work by Pacha et al.…”

Section: Introductionmentioning

confidence: 99%

A numerical study of gravity-driven instability in strongly coupled dusty plasma. Part 1. Rayleigh–Taylor instability and buoyancy-driven instability

Dharodi

Das

2021

J. Plasma Phys.

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Rayleigh–Taylor (RT) and buoyancy-driven (BD) instabilities are driven by gravity in a fluid system with inhomogeneous density. The paper investigates these instabilities for a strongly coupled dusty plasma medium. This medium has been represented here in the framework of the generalized hydrodynamics (GHD) fluid model which treats it as a viscoelastic medium. The incompressible limit of the GHD model is considered here. The RT instability is explored both for gradual and sharp density gradients stratified against gravity. The BD instability is discussed by studying the evolution of a rising bubble (a localized low-density region) and a falling droplet (a localized high-density region) in the presence of gravity. Since both the rising bubble and falling droplet have symmetry in spatial distribution, we observe that a falling droplet process is equivalent to a rising bubble. We also find that both the gravity-driven instabilities get suppressed with increasing coupling strength of the medium. These observations have been illustrated analytically as well as by carrying out two-dimensional nonlinear simulations. Part 2 of this paper is planned to extend the present study of the individual evolution of a bubble and a droplet to their combined evolution in order to understand the interaction between them.

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“…The study of RT instability in materials is important for a number of technical applications, such as processing new materials, molding metal products, explosive welding, etc. RT instability is also an important process of supernova explosion and galaxy evolution, which is the focus of inertial confinement fusion and implosion compression research [3][4][5][6][7]. The small initial perturbation on the metal interface will increase with time under certain loading.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Rayleigh-Taylor instability in copper plate under explosive loading

et al. 2021

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The Rayleigh-Taylor instability in metal is of great practical interest to a diverse range of fields, and it is significantly different from the traditional fluid interface instability. In this paper, a set of high explosives driven Rayleigh-Taylor instability experiments in copper plate are presented for intensively understanding the perturbation growth behavior of metal interface instability. The perturbation growth history on copper interface at a specific time is recorded by flash radiography. The experimental results show that the evolution of interface perturbation is sensitive to its initial perturbation characters under a given driving pressure, the larger the initial perturbation amplitude, the faster the perturbation grows, but the perturbation wavelength of the interface remains almost unchanged at the explosive loading. The perturbation on the front interface will influence the interface features of the back free interface over time. Namely, the position corresponding to the perturbation trough on the front interface gradually evolves into a peak and vice versa.

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Stabilization of Rayleigh-Taylor instability in a non-Newtonian incompressible complex plasma

Cited by 16 publications

References 33 publications

Overestimation of Viscosity by the Green-Kubo Method in a Dusty Plasma Experiment

Overestimation of Viscosity by the Green-Kubo Method in a Dusty Plasma Experiment

A numerical study of gravity-driven instability in strongly coupled dusty plasma. Part 1. Rayleigh–Taylor instability and buoyancy-driven instability

Investigation of Rayleigh-Taylor instability in copper plate under explosive loading

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