Viscous damping of toroidal angular momentum in tokamaks

The Braginskii viscous stress tensor formalism was generalized to accommodate non-axisymmetric 3D magnetic fields in general toroidal flux surface geometry in order to provide a representation for the viscous damping of toroidal rotation in tokamaks arising from various “neoclassical toroidal viscos...

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Veröffentlicht in:	Physics of plasmas 2014-09, Vol.21 (9)
1. Verfasser:	Stacey, W. M.
Format:	Artikel
Sprache:	eng
Schlagworte:	70 PLASMA PHYSICS AND FUSION TECHNOLOGY ANGULAR MOMENTUM AXIAL SYMMETRY DAMPING MAGNETIC FIELDS MAGNETIC SURFACES NEOCLASSICAL TRANSPORT THEORY Plasma physics Surface geometry TENSORS TOKAMAK DEVICES Viscosity Viscous damping
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Zusammenfassung:	The Braginskii viscous stress tensor formalism was generalized to accommodate non-axisymmetric 3D magnetic fields in general toroidal flux surface geometry in order to provide a representation for the viscous damping of toroidal rotation in tokamaks arising from various “neoclassical toroidal viscosity” mechanisms. In the process, it was verified that the parallel viscosity contribution to damping toroidal angular momentum still vanishes even in the presence of toroidal asymmetries, unless there are 3D radial magnetic fields.
ISSN:	1070-664X 1089-7674
DOI:	10.1063/1.4896719