Fluctuation-induced shear flow and energy transfer in plasma interchange turbulence
Fluctuation-induced E × B shear flow and energy transfer for plasma interchange turbulence are examined in a flux-driven system with both closed and open magnetic field lines. The nonlinear evolution of interchange turbulence shows the presence of two confinement regimes characterized by low and hig...
| Main Authors: | , , , , , |
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| Other Authors: | |
| Format: | Article |
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American Institute of Physics (AIP)
2018
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| Online Access: | http://hdl.handle.net/1721.1/113245 |
| _version_ | 1826190545519640576 |
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| author | Sun, C. K. Wang, X. Y. Zhou, A. Wang, X. G. Li, Bo Ernst, Darin R |
| author2 | Massachusetts Institute of Technology. Plasma Science and Fusion Center |
| author_facet | Massachusetts Institute of Technology. Plasma Science and Fusion Center Sun, C. K. Wang, X. Y. Zhou, A. Wang, X. G. Li, Bo Ernst, Darin R |
| author_sort | Sun, C. K. |
| collection | MIT |
| description | Fluctuation-induced E × B shear flow and energy transfer for plasma interchange turbulence are examined in a flux-driven system with both closed and open magnetic field lines. The nonlinear evolution of interchange turbulence shows the presence of two confinement regimes characterized by low and high E × B flow shear. In the first regime, the large-scale turbulent convection is dominant and the mean E × B shear flow is at a relatively low level. By increasing the heat flux above a certain threshold, the increased turbulent intensity gives rise to the transfer of energy from fluctuations to mean E × B flows. As a result, a transition to the second regime occurs, in which a strong mean E × B shear flow is generated. |
| first_indexed | 2024-09-23T08:41:33Z |
| format | Article |
| id | mit-1721.1/113245 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T08:41:33Z |
| publishDate | 2018 |
| publisher | American Institute of Physics (AIP) |
| record_format | dspace |
| spelling | mit-1721.1/1132452022-09-23T13:54:55Z Fluctuation-induced shear flow and energy transfer in plasma interchange turbulence Sun, C. K. Wang, X. Y. Zhou, A. Wang, X. G. Li, Bo Ernst, Darin R Massachusetts Institute of Technology. Plasma Science and Fusion Center Li, Bo Ernst, Darin R Fluctuation-induced E × B shear flow and energy transfer for plasma interchange turbulence are examined in a flux-driven system with both closed and open magnetic field lines. The nonlinear evolution of interchange turbulence shows the presence of two confinement regimes characterized by low and high E × B flow shear. In the first regime, the large-scale turbulent convection is dominant and the mean E × B shear flow is at a relatively low level. By increasing the heat flux above a certain threshold, the increased turbulent intensity gives rise to the transfer of energy from fluctuations to mean E × B flows. As a result, a transition to the second regime occurs, in which a strong mean E × B shear flow is generated. United States. Department of Energy (Contract DE-FC02-08ER54966) 2018-01-22T14:53:32Z 2018-01-22T14:53:32Z 2015-11 2015-07 2018-01-19T18:10:41Z Article http://purl.org/eprint/type/JournalArticle 1070-664X 1089-7674 http://hdl.handle.net/1721.1/113245 Li, B. et al. “Fluctuation-Induced Shear Flow and Energy Transfer in Plasma Interchange Turbulence.” Physics of Plasmas 22, 11 (November 2015): 112304 © 2015 AIP Publishing LLC http://dx.doi.org/10.1063/1.4935912 Physics of Plasmas Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Institute of Physics (AIP) MIT Plasma Science & Fusion Center |
| spellingShingle | Sun, C. K. Wang, X. Y. Zhou, A. Wang, X. G. Li, Bo Ernst, Darin R Fluctuation-induced shear flow and energy transfer in plasma interchange turbulence |
| title | Fluctuation-induced shear flow and energy transfer in plasma interchange turbulence |
| title_full | Fluctuation-induced shear flow and energy transfer in plasma interchange turbulence |
| title_fullStr | Fluctuation-induced shear flow and energy transfer in plasma interchange turbulence |
| title_full_unstemmed | Fluctuation-induced shear flow and energy transfer in plasma interchange turbulence |
| title_short | Fluctuation-induced shear flow and energy transfer in plasma interchange turbulence |
| title_sort | fluctuation induced shear flow and energy transfer in plasma interchange turbulence |
| url | http://hdl.handle.net/1721.1/113245 |
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