Electron collisions in the trapped gyro-Landau fluid transport model
Authors:
- 1 December 2010
- journal article
- conference paper
- Published by AIP Publishing in Physics of Plasmas
- Vol. 17 (12) , 122309
Abstract
Accurately modeling electron collisions in the trapped gyro-Landau fluid (TGLF) equations has been a major challenge. Insights gained from numerically solving the gyrokinetic equation have lead to a significant improvement of the low order TGLF model. The theoretical motivation and verification of this model with the velocity-space gyrokinetic code GYRO [J. Candy and R. E. Waltz, J. Comput. Phys. 186, 545 (2003)] will be presented. The improvement in the fidelity of TGLF to GYRO is shown to also lead to better prediction of experimental temperature profiles by TGLF for a dedicated collision frequency scan.Keywords
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