skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: 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:
 [1]; ; ; ;  [1];  [2]
  1. School of Physics, State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871 (China)
  2. 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