Gyrokinetic electromagnetic particle simulations in triangular meshes with C1 finite elements

Lu, Zhixin; Meng, Guo; Hatzky, Roman; Sonnendrücker, Eric; Mishchenko, Alexey; Chen, Jin; Lauber, Philipp; Zonca, Fulvio; Hoelzl, Matthias

doi:10.1088/1361-6587/ad9e72

Title: Gyrokinetic electromagnetic particle simulations in triangular meshes with C1 finite elements

Journal Article · 18 December 2024 · Plasma Physics and Controlled Fusion

DOI: https://doi.org/10.1088/1361-6587/ad9e72 · OSTI ID:2520536

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^[2]; Chen, Jin ^[3]; Lauber, Philipp ^[1];

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Max Planck Institute for Plasma Physics, Garching (Germany)
Max Planck Institute for Plasma Physics, Greifswald (Germany)
Princeton University, NJ (United States). Princeton Plasma Physics Laboratory
C.R. ENEA Frascati (Italy). Center for Nonlinear Plasma Science (CNPS)

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.

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Research Organization:: Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC02-09CH11466

OSTI ID:: 2520536

Journal Information:: Plasma Physics and Controlled Fusion, Journal Name: Plasma Physics and Controlled Fusion Journal Issue: 1 Vol. 67; ISSN 0741-3335

Publisher:: IOP ScienceCopyright Statement

Country of Publication:: United States

Language:: English

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70 PLASMA PHYSICS AND FUSION TECHNOLOGY
finite element method
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mixed variable/pullback scheme
triangular unstructured meshes

Title: Gyrokinetic electromagnetic particle simulations in triangular meshes with C1 finite elements

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