Intercode comparison of gyrokinetic global electromagnetic modes
T. Görler, N. Tronko, W. A. Hornsby, A. Bottino, R. Kleiber, C. Norscini, V. Grandgirard, F. Jenko, E. Sonnendrücker
Abstract
Aiming to fill a corresponding lack of sophisticated test cases for global electromagnetic gyrokinetic codes, a new hierarchical benchmark is proposed. Starting from established test sets with adiabatic electrons, fully gyrokinetic electrons, and electrostatic fluctuations are taken into account before finally studying the global electromagnetic micro-instabilities. Results from up to five codes involving representatives from different numerical approaches as particle-in-cell methods, Eulerian and Semi-Lagrangian are shown. By means of spectrally resolved growth rates and frequencies and mode structure comparisons, agreement can be confirmed on ion-gyro-radius scales, thus providing confidence in the correct implementation of the underlying equations.
BibTeX
@article{G_rler_2016,
title={Intercode comparison of gyrokinetic global electromagnetic modes},
volume={23},
ISSN={1089-7674},
url={http://dx.doi.org/10.1063/1.4954915},
DOI={10.1063/1.4954915},
number={7},
journal={Physics of Plasmas},
publisher={AIP Publishing},
author={Görler, T. and Tronko, N. and Hornsby, W. A. and Bottino, A. and Kleiber, R. and Norscini, C. and Grandgirard, V. and Jenko, F. and Sonnendrücker, E.},
year={2016},
month=jul }