Greifswald 2024 – wissenschaftliches Programm
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P: Fachverband Plasmaphysik
P 25: Poster III
P 25.6: Poster
Donnerstag, 29. Februar 2024, 16:30–18:30, ELP 6: Foyer
Linear extended mhd equations in struphy — •Nathan Marin1,2 and Stefan Possanner1 — 1Max Planck Institute for Plasma Physics, Garching, Germany — 2Technische Universität München, Garching, Germany
In this project, a Finite Elements Exterior Calculus discretization for the linearized homogeneous extended mhd equations is developed and implemented to obtain a solver of arbitrary degree of convergence that simulates plasma behavior. The discretization has been implemented as the newly available LinearExtendedMHD model in struphy ('A python package for energetic particles in plasma, developed since 2019 at Max Planck Institute for Plasma Physics in the Numerical Methods for Plasma Physics division'. Look at https://struphy.pages.mpcdf.de/struphy/index.html for more information about struphy).
The discretization was devised to preserve critical physical quantities that the continuous model conserves (magnetic helicity, energy, and magnetic field's divergence) so the simulation adequately describes the relevant physical phenomena. Finally, the analytical dispersion relation for the extended mhd equation was derived to use it as a test case for the code.
Keywords: Extended MHD; Finite Elements Exterior Calculus; struphy; python