$\texttt{stella}$: a mixed implicit-explicit, delta-f gyrokinetic code for general magnetic field configurations

Autor:	Barnes, Michael, Parra-Diaz, Felix, Landreman, Matt
Rok vydání:	2018
Předmět:	Physics - Plasma Physics Physics - Computational Physics
Druh dokumentu:	Working Paper
DOI:	10.1016/j.jcp.2019.01.025
Popis:	Here we present details of a mixed implicit-explicit numerical scheme for the solution of the gyrokinetic-Poisson system of equations in the local limit. This scheme has been implemented in a new code called $\texttt{stella}$, which is capable of evolving electrostatic fluctuations with full kinetic electron effects and an arbitrary number of ion species in general magnetic geometry. We demonstrate the advantages of this mixed approach over a fully explicit treatment and provide linear and nonlinear benchmark comparisons for both axisymmetric and non-axisymmetric magnetic equilibria. Comment: 17 pages, 7 figures, submitted to Journal of Computational Physics
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1806.02162 Zobrazit plný text záznamu View this record from Arxiv