Structural transition of vortices to nonlinear regimes in a dusty plasma
Abstract
The structural transition of a steady state dust flow from linear to nonlinear regimes is analyzed using a two-dimensional hydrodynamic model for the dust fluid confined in an axisymmetric toroidal system along with an unbounded streaming plasma. Numerical solutions of the employed hydrodynamical model not only confirms the analytical structure of the driven dust vortex flow in the linear limit as reported in the previous analysis but also shows how the dust vortices are strongly affected by the nonlinear convective transport of the flow at the higher Reynolds number (Re) regime. Effects of various system parameters including external driving field and the Reynolds number are investigated within the linear to nonlinear transition regime 0.001 ≤ Re < 50. In agreement with relevant experimental observations, the steady flow structure which is symmetric around the center in the linear regime begins to turn asymmetric in the nonlinear regime. The structure of the steady dust flow is found to be influenced mainly by the dissipation scales due to kinematic viscosity, ion drag, and neutral collision in the nonlinear regime, whereas, in the linear regime, it is mainly controlled by the external driving field and the confining boundaries.
- Authors:
-
[2]
- Univ. of Science and Technology of China, Hefei (China). CAS Key Laboratory of Geospace Environment, and Dept. of Engineering and Applied Physics
- Univ. of Science and Technology of China, Hefei (China). CAS Key Laboratory of Geospace Environment, and Dept. of Engineering and Applied Physics; Univ. of Science and Technology of China, Hefei (China). KTX Laboratory and Dept. of Engineering and Applied Physics; Univ. of Wisconsin, Madison, WI (United States). Dept. of Engineering Physics
- Publication Date:
- Research Org.:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC); Univ. of Wisconsin, Madison, WI (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC)
- OSTI Identifier:
- 1543879
- Alternate Identifier(s):
- OSTI ID: 1476679
- Grant/Contract Number:
- FC02-08ER54975; FG02-86ER53218
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physics of Plasmas
- Additional Journal Information:
- Journal Volume: 25; Journal Issue: 10; Journal ID: ISSN 1070-664X
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; Physics
Citation Formats
Laishram, Modhuchandra, and Zhu, Ping. Structural transition of vortices to nonlinear regimes in a dusty plasma. United States: N. p., 2018.
Web. doi:10.1063/1.5045772.
Laishram, Modhuchandra, & Zhu, Ping. Structural transition of vortices to nonlinear regimes in a dusty plasma. United States. https://doi.org/10.1063/1.5045772
Laishram, Modhuchandra, and Zhu, Ping. Mon .
"Structural transition of vortices to nonlinear regimes in a dusty plasma". United States. https://doi.org/10.1063/1.5045772. https://www.osti.gov/servlets/purl/1543879.
@article{osti_1543879,
title = {Structural transition of vortices to nonlinear regimes in a dusty plasma},
author = {Laishram, Modhuchandra and Zhu, Ping},
abstractNote = {The structural transition of a steady state dust flow from linear to nonlinear regimes is analyzed using a two-dimensional hydrodynamic model for the dust fluid confined in an axisymmetric toroidal system along with an unbounded streaming plasma. Numerical solutions of the employed hydrodynamical model not only confirms the analytical structure of the driven dust vortex flow in the linear limit as reported in the previous analysis but also shows how the dust vortices are strongly affected by the nonlinear convective transport of the flow at the higher Reynolds number (Re) regime. Effects of various system parameters including external driving field and the Reynolds number are investigated within the linear to nonlinear transition regime 0.001 ≤ Re < 50. In agreement with relevant experimental observations, the steady flow structure which is symmetric around the center in the linear regime begins to turn asymmetric in the nonlinear regime. The structure of the steady dust flow is found to be influenced mainly by the dissipation scales due to kinematic viscosity, ion drag, and neutral collision in the nonlinear regime, whereas, in the linear regime, it is mainly controlled by the external driving field and the confining boundaries.},
doi = {10.1063/1.5045772},
journal = {Physics of Plasmas},
number = 10,
volume = 25,
place = {United States},
year = {Mon Oct 08 00:00:00 EDT 2018},
month = {Mon Oct 08 00:00:00 EDT 2018}
}
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Works referencing / citing this record:
Multiple steady state co-rotating dust vortices in streaming plasma
journal, October 2019
- Laishram, Modhuchandra; Sharma, Devendra; Zhu, Ping
- Journal of Physics D: Applied Physics, Vol. 53, Issue 2