Reevaluation of the Braginskii viscous force for toroidal plasma
Plasma Physics
2011-11-04 v3 Classical Physics
Abstract
The model by Braginskii for the viscous stress tensor is used to determine the shear and gyroviscous forces acting within a toroidally confined plasma. Comparison is made to a previous evaluation which contains an inconsistent treatment of the radial derivative and neglects the effect of the pitch angle. Parallel viscosity contributes a radial shear viscous force which may develop for sufficient vertical asymmetry to the ion velocity profile. An evaluation is performed of this radial viscous force for a tokamak near equilibrium which indicates qualitative agreement between theory and measurement for impure plasma discharges with strong toroidal flow.
Keywords
Cite
@article{arxiv.0905.0086,
title = {Reevaluation of the Braginskii viscous force for toroidal plasma},
author = {Robert W. Johnson},
journal= {arXiv preprint arXiv:0905.0086},
year = {2011}
}
Comments
14 pages, 7 figures, minor revision, final version