1. Gyrokinetic Electromagnetic Particle Simulations in Triangular Meshes with C1 Finite Elements
- Author
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Lu, Zhixin, Meng, Guo, Hatzky, Roman, Sonnendrücker, Eric, Mishchenko, Alexey, Chen, Jin, Lauber, Philipp, Zonca, Fulvio, and Hoelzl, Matthias
- Subjects
Physics - Plasma Physics ,Physics - Computational Physics - 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., Comment: 31 pages, 9 figures. Joint Varenna-Lausanne International Workshop on Theory of Fusion Plasmas. Submitted to Plasma Physics and Controlled Fusion (2024)
- Published
- 2024