• DOI:10.1063/5.0010850
• Corpus ID: 219260520

Dust vortex flow analysis in weakly magnetized plasma

@article{Kumar2020DustVF,
  title={Dust vortex flow analysis in weakly magnetized plasma},
  author={Prince Kumar and Devendra Sharma},
  journal={arXiv: Plasma Physics},
  year={2020}
}

• Prince Kumar, D. Sharma
• Published 3 June 2020
• Physics
• arXiv: Plasma Physics

Analysis of driven dust vortex flow is presented in a weakly magnetized plasma. The 2D hydrodynamic model is applied to the confined dust cloud in a non-uniform magnetic field in order to recover the dust vortex flow driven in a conservative force field setup, in absence of any non-conservative fields or dust charge variation. Although the time independent electric and magnetic fields included in the analysis provide conservative forcing mechanisms, when the a drift based mechanism, recently observed in a dusty plasma experiment by [M. Puttscher and A. Melzer, Physics of Plasmas, 21,123704(2014)] is considered, the dust vortex flow solutions are shown to be recovered. We have examined the case where purely ambipolar electric field, generated by polarization produced by electron E*B drift, drives the dust flow. A sheared E*B drift flow is facilitated by the magnetic field gradient, driving the vortex flow in the absence of ion drag. The analytical stream-function solutions have been analyzed with varying magnetic field strength, its gradient and kinematic viscosity of the dust fluid. The effect of B field gradient is analyzed which contrasts that of E field gradient present in the plasma sheath.