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Article overview
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Transport-driven toroidal rotation in the tokamak edge | T. Stoltzfus-Dueck
; | Date: |
1 Sep 2011 | Abstract: | The interaction of passing-ion drift orbits with spatially-inhomogeneous but
purely diffusive radial transport is demonstrated to cause spontaneous toroidal
spin-up to experimentally-relevant values in the tokamak edge. Physically,
major-radial orbit shifts cause orbit-averaged diffusivities to depend on
parallel velocity, including its sign, leading to residual stress. The
resulting intrinsic rotation scales with ion temperature over poloidal magnetic
field strength, resembling typical experimental scalings. Additionally, an
inboard (outboard) X-point is expected to enhance co- (counter-) current
rotation. | Source: | arXiv, 1109.0171 | Services: | Forum | Review | PDF | Favorites |
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