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DOE OSTI · 2520536

Gyrokinetic electromagnetic particle simulations in triangular meshes with C1 finite elements

Lu, Zhixin [Max Planck Institute for Plasma Physics, Garching (Germany)] (ORCID:0000000205579694)·Meng, Guo [Max Planck Institute for Plasma Physics, Garching (Germany)] (ORCID:000000020969733X)·Hatzky, Roman [Max Planck Institute for Plasma Physics, Garching (Germany)]·Sonnendrücker, Eric [Max Planck Institute for Plasma Physics, Garching (Germany)] (ORCID:0000000283407230)·Mishchenko, Alexey [Max Planck Institute for Plasma Physics, Greifswald (Germany)] (ORCID:0000000314364502)·Chen, Jin [Princeton University, NJ (United States). Princeton Plasma Physics Laboratory]·Lauber, Philipp [Max Planck Institute for Plasma Physics, Garching (Germany)]·Zonca, Fulvio [C.R. ENEA Frascati (Italy). Center for Nonlinear Plasma Science (CNPS)] (ORCID:0000000292704704)·Hoelzl, Matthias [Max Planck Institute for Plasma Physics, Garching (Germany)] (ORCID:0000000179219176)
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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.

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70 PLASMA PHYSICS AND FUSION TECHNOLOGYfinite element methodgyrokinetic simulationskinetic electromagnetic modelmixed variable/pullback schemetriangular unstructured meshes

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Lu, Zhixin [Max Planck Institute for Plasma Physics, Garching (Germany)] (ORCID:0000000205579694), Meng, Guo [Max Planck Institute for Plasma Physics, Garching (Germany)] (ORCID:000000020969733X), Hatzky, Roman [Max Planck Institute for Plasma Physics, Garching (Germany)], Sonnendrücker, Eric [Max Planck Institute for Plasma Physics, Garching (Germany)] (ORCID:0000000283407230), Mishchenko, Alexey [Max Planck Institute for Plasma Physics, Greifswald (Germany)] (ORCID:0000000314364502), Chen, Jin [Princeton University, NJ (United States). Princeton Plasma Physics Laboratory], Lauber, Philipp [Max Planck Institute for Plasma Physics, Garching (Germany)], Zonca, Fulvio [C.R. ENEA Frascati (Italy). Center for Nonlinear Plasma Science (CNPS)] (ORCID:0000000292704704), Hoelzl, Matthias [Max Planck Institute for Plasma Physics, Garching (Germany)] (ORCID:0000000179219176). 2024-12-19. Gyrokinetic electromagnetic particle simulations in triangular meshes with C1 finite elements. https://doi.org/10.1088/1361-6587%2Fad9e72

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