Ion Temperature Gradient driven turbulence is investigated with the global full- f gyrokinetic code GYSELA for different magnetic equilibria. Reversed shear and monotonous q profile cases do not exhibit dramatic changes nor in the dynamics nor in the …
Important steps towards the understanding of turbulent transport have been made with the development of the gyrokinetic framework for describing turbulence and with the emergence of numerical codes able to solve the set of gyrokinetic equations. This …
The turbulent transport governed by the toroidal ion temperature gradient driven instability is analysed with the full- f global gyrokinetic code GYSELA (Grandgirard et al 2007 Plasma Phys. Control. Fusion [/0741-3335/49/12b/s16] 49 B173 ) when the …
In the nonlinear regime, the stability of resonantly driven systems, such as energetic particle driven modes in magnetically confined plasmas, is shown to depend on the presence and nature of an underlying damping mechanism. When resonant damping is …
A novel method is proposed to construct collisionless fluid closures accounting for some kinetic properties. The idea consists in optimizing the agreement between the fluid and kinetic quasi-linear entropy production rates, so as to constrain the …