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of 1 021
pro vyhledávání: '"Frei B"'
We present a convergence study of the gyromoment (GM) approach, which is based on projecting the gyrokinetic distribution function onto a Hermite-Laguerre polynomial basis, focused on the cyclone base case (CBC) (Lin et al. 1999) and Dimits shift (Di
Externí odkaz:
http://arxiv.org/abs/2308.01016
Simulations of plasma turbulence in a linear plasma device configuration are presented. These simulations are based on a simplified version of the gyrokinetic (GK) model proposed by B. J. Frei et al. [J. Plasma Phys. 86, 905860205 (2020)] where the f
Externí odkaz:
http://arxiv.org/abs/2307.04562
This work reports on the development and numerical implementation of the linear electromagnetic gyrokinetic (GK) model in a tokamak flux-tube geometry using a moment approach based on the expansion of the perturbed distribution function on a velocity
Externí odkaz:
http://arxiv.org/abs/2210.05799
The first nonlinear gyrokinetic simulations obtained using a moment approach based on the Hermite-Laguerre decomposition of the distribution function are presented, implementing advanced models for the collision operator. Turbulence in a \modif{two-d
Externí odkaz:
http://arxiv.org/abs/2208.01346
The numerical implementation of the linearized gyrokinetic (GK) and drift-kinetic (DK) improved Sugama (IS) collision operators, recently introduced by Sugama et al. [Phys. Plasmas 26, 102108 (2019)], is reported. The IS collision operator extends th
Externí odkaz:
http://arxiv.org/abs/2202.06293
We present a study of the linear properties of ion temperature gradient (ITG) modes with collisions modelled by the linearized gyrokinetic (GK) Coulomb collision operator (Frei et al. 2021) in the local limit. The study is based on a Hermite-Laguerre
Externí odkaz:
http://arxiv.org/abs/2201.02860
Publikováno v:
J. Plasma Phys. 87 (2021) 905870501
The derivation and numerical implementation of a linearized version of the gyrokinetic (GK) Coulomb collision operator (Jorge R. et al., J. Plasma Phys. 85, 905850604 (2019)) and of the widely-used linearized GK Sugama collision operator (Sugama H. e
Externí odkaz:
http://arxiv.org/abs/2104.11480
Publikováno v:
Journal of Plasma Physics, 2019
A gyrokinetic Coulomb collision operator is derived, which is particularly useful to describe the plasma dynamics at the periphery region of magnetic confinement fusion devices. The derived operator is able to describe collisions occurring in distrib
Externí odkaz:
http://arxiv.org/abs/1906.03252
Publikováno v:
J. Plasma Phys. 86 (2020) 905860205
A gyrokinetic model is presented that can properly describe strong flows, large and small amplitude electromagnetic fluctuations occurring on scale lengths ranging from the electron Larmor radius to the equilibrium perpendicular pressure gradient sca
Externí odkaz:
http://arxiv.org/abs/1904.06863
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