Fluctuation-induced shear flow and energy transfer in plasma interchange turbulence
Abstract
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.
- Authors:
-
- School of Physics, State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871 (China)
- Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)
- Publication Date:
- OSTI Identifier:
- 22489837
- Resource Type:
- Journal Article
- Journal Name:
- Physics of Plasmas
- Additional Journal Information:
- Journal Volume: 22; Journal Issue: 11; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1070-664X
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; CONVECTION; ELECTRIC FIELDS; FLUCTUATIONS; HEAT FLUX; MAGNETIC FIELDS; NONLINEAR PROBLEMS; PLASMA; PLASMA CONFINEMENT; SHEAR; TURBULENCE
Citation Formats
Li, B., Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, Sun, C. K., Wang, X. Y., Zhou, A., Wang, X. G., and Ernst, D. R. Fluctuation-induced shear flow and energy transfer in plasma interchange turbulence. United States: N. p., 2015.
Web. doi:10.1063/1.4935912.
Li, B., Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, Sun, C. K., Wang, X. Y., Zhou, A., Wang, X. G., & Ernst, D. R. Fluctuation-induced shear flow and energy transfer in plasma interchange turbulence. United States. https://doi.org/10.1063/1.4935912
Li, B., Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, Sun, C. K., Wang, X. Y., Zhou, A., Wang, X. G., and Ernst, D. R. 2015.
"Fluctuation-induced shear flow and energy transfer in plasma interchange turbulence". United States. https://doi.org/10.1063/1.4935912.
@article{osti_22489837,
title = {Fluctuation-induced shear flow and energy transfer in plasma interchange turbulence},
author = {Li, B. and Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 and Sun, C. K. and Wang, X. Y. and Zhou, A. and Wang, X. G. and Ernst, D. R.},
abstractNote = {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.},
doi = {10.1063/1.4935912},
url = {https://www.osti.gov/biblio/22489837},
journal = {Physics of Plasmas},
issn = {1070-664X},
number = 11,
volume = 22,
place = {United States},
year = {Sun Nov 15 00:00:00 EST 2015},
month = {Sun Nov 15 00:00:00 EST 2015}
}
Works referencing / citing this record:
Magnetic curvature effects on plasma interchange turbulence
journal, June 2016
- Li, B.; Liao, X.; Sun, C. K.
- Physics of Plasmas, Vol. 23, Issue 6
Global 3D two-fluid simulations of the tokamak edge region: Turbulence, transport, profile evolution, and spontaneous E × B rotation
journal, May 2017
- Zhu, Ben; Francisquez, Manaure; Rogers, Barrett N.
- Physics of Plasmas, Vol. 24, Issue 5