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Eddy, drift wave and zonal flow dynamics in a linear magnetized plasma
- Source :
- Scientific Reports
- Publication Year :
- 2016
- Publisher :
- Nature Publishing Group, 2016.
-
Abstract
- Turbulence and its structure formation are universal in neutral fluids and in plasmas. Turbulence annihilates global structures but can organize flows and eddies. The mutual-interactions between flow and the eddy give basic insights into the understanding of non-equilibrium and nonlinear interaction by turbulence. In fusion plasma, clarifying structure formation by Drift-wave turbulence, driven by density gradients in magnetized plasma, is an important issue. Here, a new mutual-interaction among eddy, drift wave and flow in magnetized plasma is discovered. A two-dimensional solitary eddy, which is a perturbation with circumnavigating motion localized radially and azimuthally, is transiently organized in a drift wave – zonal flow (azimuthally symmetric band-like shear flows) system. The excitation of the eddy is synchronized with zonal perturbation. The organization of the eddy has substantial impact on the acceleration of zonal flow.
- Subjects :
- Physics
Multidisciplinary
Structure formation
Turbulence
Perturbation (astronomy)
Plasma
Mechanics
01 natural sciences
Article
010305 fluids & plasmas
Eddy diffusion
Physics::Fluid Dynamics
Nonlinear system
Eddy
Physics::Plasma Physics
0103 physical sciences
Physics::Space Physics
010306 general physics
Excitation
Physics::Atmospheric and Oceanic Physics
Subjects
Details
- Language :
- English
- ISSN :
- 20452322
- Volume :
- 6
- Database :
- OpenAIRE
- Journal :
- Scientific Reports
- Accession number :
- edsair.doi.dedup.....1e399b3022f3f587120083f66e590c9a