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arXiv · 1311.5877

L-H transition dynamics in fluid turbulence simulations with neoclassical force balance

Laurent Chôné·Peter Beyer·Yanick Sarazin·Guillaume Fuhr·Clarisse Bourdelle·Sadruddin Benkadda
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Abstract

Spontaneous transport barrier generation at the edge of a magnetically confined plasma is investigated. To this end, a model of electrostatic turbulence in three-dimensional geometry is extended to account for the impact of friction between trapped and passing particles on the radial electric field. Non-linear flux-driven simulations are carried out, and it is shown that considering the radial and temporal variations of the neoclassical friction coefficients allows for a transport barrier to be generated above a threshold of the input power.

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Laurent Chôné, Peter Beyer, Yanick Sarazin, Guillaume Fuhr, Clarisse Bourdelle, Sadruddin Benkadda. 2013-11-22. L-H transition dynamics in fluid turbulence simulations with neoclassical force balance. https://doi.org/10.1063/1.4890971

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