Title:
Calculation of toroidal rotation profiles in DIII-D using neoclassical viscosity (DoE Grant ER54538)
Calculation of toroidal rotation profiles in DIII-D using neoclassical viscosity (DoE Grant ER54538)
Author(s)
Stacey, Weston M.
Johnson, R. W.
Mandrekas, John
Johnson, R. W.
Mandrekas, John
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Abstract
Momentum and particle balance and neoclassical viscosity were applied to calculate the radial
profile of toroidal rotation in several DIII-D [J. Luxon, Nucl. Fusion, 42, 614 (2002)] discharges in a
variety of energy confinement regimes (Low-mode, Low-mode with Internal Transport Barrier, Highmode,
and High-mode with Quiescent Double Barrier). Calculated toroidal rotation velocities were found
to over-predict measured values most in the center—by factors of 1.5 to 3--with the over-prediction
generally decreasing with increasing radius, for the L, H and ITB mode shots, but the single impurity
species approximation could not properly model the multiple Ni and Cu charge states in the QDB shots.
Sponsor
DoE Grant ER54538
Date Issued
2005-10
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430102 bytes
Resource Type
Text
Resource Subtype
Pre-print