Stability characteristics of a non-Newtonian strongly coupled dusty plasma in the presence of shear flow

被引：9

作者：

Garai, S. ^{[1
]}

Jana, S. ^{[1
]}

Janaki, M. S. ^{[1
]}

Chakrabarti, N. ^{[1
]}

机构：

[1] Saha Inst Nucl Phys, 1-AF Bidhannagar, Kolkata 700064, India

来源：

EPL | 2016年 / 114卷 / 06期

关键词：

ONE-COMPONENT PLASMA; LOW-FREQUENCY MODES; ACOUSTIC-WAVES; PARTICLES; LIQUID; DYNAMICS; DISPERSION; VISCOSITY; CRYSTALS; STATE;

D O I：

10.1209/0295-5075/114/65003

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A visco-elastic medium, such as a strongly coupled dusty plasma (SCDP), permits both the propagation of longitudinal dust acoustic mode due to compressibility and transverse shear mode due to elasticity. In the presence of finite velocity shear, these two modes get coupled with each other and eventually the coupled mode becomes unstable. In a non-Newtonian dust fluid, it has been found that the viscosity gradient has a modulating effect on this shear-driven instability under various parametric regimes. A detailed investigation has been carried out on the effect of viscosity gradient on the stability characteristics of a strongly coupled dusty plasma by using the conventional dust fluid equations; both analytically and numerically. These results can be helpful in understanding the phenomena associated with mechanical instabilities in highly viscous fluids; such as metallic glasses, Earth's mantle etc. Copyright (C) EPLA, 2016

引用

页数：6

共 48 条

[1]

Alsop G.I., 2004, Flow Processes in Faults and Shear Zones

[2]

Angelo N. D., 1993, PLANET SPACE SCI, V41, P469

[3] Experimental observation of strong coupling effects on the dispersion of dust acoustic waves in a plasma [J].

Bandyopadhyay, P. ;

Prasad, G. ;

Sen, A. ;

Kaw, P. K. .

PHYSICS LETTERS A, 2007, 368 (06) :491-494

[4] Viscosity gradient-driven instability of 'shear mode' in a strongly coupled plasma [J].

Banerjee, D. ;

Janaki, M. S. ;

Chakrabarti, N. ;

Chaudhuri, M. .

NEW JOURNAL OF PHYSICS, 2010, 12

[5] SPECTRUM OF LOW-FREQUENCY MODES IN STRONGLY COUPLED PLASMAS [J].

BERKOVSKY, MA .

PHYSICS LETTERS A, 1992, 166 (5-6) :365-368

[6] DIRECT OBSERVATION OF COULOMB CRYSTALS AND LIQUIDS IN STRONGLY COUPLED RF DUSTY PLASMAS [J].

CHU, JH ;

I, L .

PHYSICAL REVIEW LETTERS, 1994, 72 (25) :4009-4012

[7] Direct Observation of Mode-Coupling Instability in Two-Dimensional Plasma Crystals [J].

Couedel, L. ;

Nosenko, V. ;

Ivlev, A. V. ;

Zhdanov, S. K. ;

Thomas, H. M. ;

Morfill, G. E. .

PHYSICAL REVIEW LETTERS, 2010, 104 (19)

[8] Observation of Temperature Peaks due to Strong Viscous Heating in a Dusty Plasma Flow [J].

Feng, Yan ;

Goree, J. ;

Liu, Bin .

PHYSICAL REVIEW LETTERS, 2012, 109 (18)

[9] Viscosity of a Strongly Coupled Dust Component in a Weakly Ionized Plasma [J].

Fortov, V. E. ;

Petrov, O. F. ;

Vaulina, O. S. ;

Timirkhanov, R. A. .

PHYSICAL REVIEW LETTERS, 2012, 109 (05)

[10]

Fortov V. E., 2006, PHYS STRONGLY COUPLE

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