Gyrokinetic electromagnetic particle simulations in triangular meshes with C1 finite elements
Zhixin Lu, Guo Meng, Roman Hatzky, Eric Sonnendrücker, Alexey Mishchenko, Jin Chen, Philipp Lauber, Fulvio Zonca, Matthias Hoelzl
Abstract
Abstract The triangular mesh-based gyrokinetic scheme enables comprehensive axis-to-edge studies across the entire plasma volume. Our approach employs triangular finite elements with first-derivative continuity (C1), building on previous work to facilitate gyrokinetic simulations. Additionally, we have adopted the mixed variable/pullback scheme for gyrokinetic electromagnetic particle simulations. The filter-free treatment in the poloidal cross-section with triangular meshes introduces unique features and challenges compared to previous treatments using structured meshes. Our implementation has been validated through benchmarks using ITPA-toroidicity-induced Alfvén eigenmode parameters, showing its capability in moderate to small electron skin depth regimes. Additional examinations using experimental parameters confirm its applicability to realistic plasma conditions.
BibTeX
@article{Lu_2024,
title={Gyrokinetic electromagnetic particle simulations in triangular meshes with C1 finite elements},
volume={67},
ISSN={1361-6587},
url={http://dx.doi.org/10.1088/1361-6587/ad9e72},
DOI={10.1088/1361-6587/ad9e72},
number={1},
journal={Plasma Physics and Controlled Fusion},
publisher={IOP Publishing},
author={Lu, Zhixin and Meng, Guo and Hatzky, Roman and Sonnendrücker, Eric and Mishchenko, Alexey and Chen, Jin and Lauber, Philipp and Zonca, Fulvio and Hoelzl, Matthias},
year={2024},
month=dec,
pages={015015} }