Extension of the flow-rate-of-strain tensor formulation of plasma rotation theory to non-axisymmetric tokamaks

Journal Article · Mon Jun 15 04:00:00 EDT 2015 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4921737· OSTI ID:22410438

Stacey, W. M. ^[1]; Bae, C. ^[2]

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1. Georgia Institute of Technology, Atlanta, Georgia 30332 (United States)
2. National Fusion Research Institute, Daejoen (Korea, Republic of)

A systematic formalism for the calculation of rotation in non-axisymmetric tokamaks with 3D magnetic fields is described. The Braginskii Ωτ-ordered viscous stress tensor formalism, generalized to accommodate non-axisymmetric 3D magnetic fields in general toroidal flux surface geometry, and the resulting fluid moment equations provide a systematic formalism for the calculation of toroidal and poloidal rotation and radial ion flow in tokamaks in the presence of various non-axisymmetric “neoclassical toroidal viscosity” mechanisms. The relation among rotation velocities, radial ion particle flux, ion orbit loss, and radial electric field is discussed, and the possibility of controlling these quantities by producing externally controllable toroidal and/or poloidal currents in the edge plasma for this purpose is suggested for future investigation.

• OSTI ID: 22410438
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 6 Vol. 22; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
AXIAL SYMMETRY
ELECTRIC FIELDS
FLOW RATE
GEOMETRY
IONS
MAGNETIC FIELDS
MAGNETIC SURFACES
ORBITS
PLASMA
ROTATING PLASMA
STRESSES
TENSORS
TOKAMAK DEVICES
TOROIDAL CONFIGURATION
VISCOSITY