Turbulence and bias-induced flows in simple magnetized toroidal plasmas

Journal Article · Sun May 15 00:00:00 EDT 2011 · Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics (Print)

DOI:https://doi.org/10.1103/PHYSREVE.83.056406· OSTI ID:21560294

Li, B; Rogers, B N ^[1]; Ricci, P ^[2]; Gentle, K W ^[3]; Bhattacharjee, A ^[4]

---

1. Department of Physics and Astronomy, Dartmouth College, Hanover, New Hampshire 03755 (United States)
2. Centre de Recherches en Physique des Plasmas - Ecole Polytechnique Federale de Lausanne, Association EURATOM-Confederation Suisse, CH-1015 Lausanne (Switzerland)
3. Department of Physics, Institute for Fusion Studies, University of Texas at Austin, Austin, Texas 78712 (United States)
4. Department of Physics, University of New Hampshire, Durham, New Hampshire 03824 (United States)

Turbulence and bias-induced flows in simple magnetized toroidal plasmas are explored with global three-dimensional fluid simulations, focusing on the parameters of the Helimak experiment. The simulations show that plasma turbulence and transport in the regime of interest are dominated by the ideal interchange instability. The application of a bias voltage alters the structure of the plasma potential, resulting in the equilibrium sheared flows.These bias-induced vertical flows located in the gradient region appear to reduce the radial extent of turbulent structures,and thereby lower the radial plasma transport on the low field side.

• OSTI ID: 21560294
• Journal Information: Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics (Print), Vol. 83, Issue 5; Other Information: DOI: 10.1103/PhysRevE.83.056406; (c) 2011 American Institute of Physics; ISSN 1539-3755
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
FLOW MODELS
FLUTE INSTABILITY
PLASMA
PLASMA POTENTIAL
SHEAR
SIMULATION
THREE-DIMENSIONAL CALCULATIONS
TOROIDAL CONFIGURATION
TRANSPORT
TURBULENCE
ANNULAR SPACE
CLOSED CONFIGURATIONS
CONFIGURATION
ELECTRIC POTENTIAL
INSTABILITY
MAGNETIC FIELD CONFIGURATIONS
MATHEMATICAL MODELS
PLASMA INSTABILITY
PLASMA MACROINSTABILITIES
SPACE