Gyrokinetic Electromagnetic Particle Simulations in Triangular Meshes with C1 Finite Elements
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-TAE (Toroidicity-induced Alfv\'en 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.
Cite
@article{arxiv.2410.03928,
title = {Gyrokinetic Electromagnetic Particle Simulations in Triangular Meshes with C1 Finite Elements},
author = {Zhixin Lu and Guo Meng and Roman Hatzky and Eric Sonnendrücker and Alexey Mishchenko and Jin Chen and Philipp Lauber and Fulvio Zonca and Matthias Hoelzl},
journal= {arXiv preprint arXiv:2410.03928},
year = {2024}
}
Comments
31 pages, 9 figures. Joint Varenna-Lausanne International Workshop on Theory of Fusion Plasmas. Submitted to Plasma Physics and Controlled Fusion (2024)