Longitudinal singular response of dusty plasma medium in weak and strong coupling limits

Tiwari, Sanat Kumar; Das, Amita; Kaw, P. K.; Sen, Abhijit

doi:10.1063/1.3677271

Cited by 7 publications

(3 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Similar observations were made in our earlier studies on simulations of 1D dusty plasma systems 18 where the strongly coupled dust behaviour described by the GHD set of equations, at very high values of s m behaved similar to an inviscid weakly coupled hydrodynamic dust fluid. It appears that in the limit of s m !…”

Section: B the General Casesupporting

confidence: 88%

See 1 more Smart Citation

Kelvin-Helmholtz instability in a strongly coupled dusty plasma medium

et al. 2012

Self Cite

View full text Add to dashboard Cite

The Kelvin-Helmholtz (KH) instability in the context of strongly coupled dusty plasma medium has been investigated. In particular, the role of transverse shear and the compressional acoustic modes in both the linear and nonlinear regimes of the KH instability has been studied. It is observed that in addition to the conventional nonlocal KH instability, there exists a local instability in the strong coupling case. The interplay of the KH mode with this local instability shows up in the simulations as an interesting phenomenon of recurrence in the nonlinear regime. Thus, a cyclic KH instability process is observed to occur. These cyclic events are associated with bursts of activity in terms of transverse and compressional wave generation in the medium. V C 2012 American Institute of Physics. [http://dx.

show abstract

Section: B the General Casesupporting

confidence: 88%

“…This is the usual description of the visco-elastic fluid through the GHD model. 18 However, the dusty plasma being a charged system, an additional force representing the external/self consistent electric field has to be incorporated. The term r/ with / representing the scalar potential, takes care of this.…”

Section: Governing Equationsmentioning

confidence: 99%

Kelvin-Helmholtz instability in a strongly coupled dusty plasma medium

et al. 2012

Self Cite

View full text Add to dashboard Cite

show abstract

“…The model has successfully predicted the existence of transverse shear waves, which was later verified in experiments. 10,11 Numerical evidence for the existence of transverse shear waves, singular cusp structures [12][13][14] have also been provided. Numerical studies in 2-D have also indicated the formation and the sustained presence of short scale structure, a characteristic which is significantly different from that of the 2-D hydrodynamic flows, which in turn exhibits inverse cascade in two dimension.…”

mentioning

confidence: 99%

Turbulence in strongly coupled dusty plasmas using generalized hydrodynamic description

et al. 2015

Self Cite

View full text Add to dashboard Cite

The properties of decaying turbulence have been studied with the help of a Generalized Hydrodynamic (GHD) fluid model in the context of strongly coupled dusty plasma medium in two dimensions. The GHD model treats the strongly coupled dusty plasma system as a visco-elastic medium. The incompressible limit of the GHD model is considered here. The studies carried out here are, however, applicable to a wider class of visco-elastic systems, and are not merely confined to the dusty plasma medium. Our simulations studies show that an initial spectrum that is confined in a limited domain of wave numbers becomes broad, even when the Reynold's number is much less than the critical value required for the onset of turbulence in Newtonian fluids. This is a signature of elastic turbulence, where Weissenberg's number also plays an important role on the onset of turbulence. This feature has been observed in several experiments. It is also shown that the existence of memory relaxation time parameter and the transverse shear wave inhibit the normal process (for 2-D systems) of inverse spectral cascade in this case. A detailed simulation study has been carried out for the understanding of this inhibition.

show abstract

Collective dynamics in strongly coupled dusty plasma medium

2014

Self Cite

View full text Add to dashboard Cite

A simplified description of dynamical response of strongly coupled medium is desirable in many contexts of physics. The dusty plasma medium can play an important role in this regard due to its uniqueness, as its dynamical response typically falls within the perceptible grasp of human senses. Furthermore, even at room temperature and normal densities it can be easily prepared to be in a strongly coupled regime. A simplified phenomenological fluid model based on the visco - elastic behaviour of the medium is often invoked to represent the collective dynamical response of a strongly coupled dusty plasma medium. The manuscript reviews the role of this particular Generalized Hydrodynamic (GHD) fluid model in capturing the collective properties exhibited by the medium. In addition the paper also provides new insights on the collective behaviour predicted by the model for the medium, in terms of coherent structures, instabilities, transport and mixing properties.

show abstract

Longitudinal singular response of dusty plasma medium in weak and strong coupling limits

Cited by 7 publications

References 19 publications

Kelvin-Helmholtz instability in a strongly coupled dusty plasma medium

Kelvin-Helmholtz instability in a strongly coupled dusty plasma medium

Turbulence in strongly coupled dusty plasmas using generalized hydrodynamic description

Collective dynamics in strongly coupled dusty plasma medium

Contact Info

Product

Resources

About