Greifswald 2024 – scientific programme
Parts | Days | Selection | Search | Updates | Downloads | Help
P: Fachverband Plasmaphysik
P 25: Poster III
P 25.4: Poster
Thursday, February 29, 2024, 16:30–18:30, ELP 6: Foyer
structure-preserving hybrid code, STRUPHY: energy-conserving hybrid MHD-driftkinetic models. — •Byung Kyu Na1,2, Stefan Possanner1, Xin Wang1, Dominik Bell2, Yingzhe Li1, and Nathan Marín1,2 — 1Max Planck Institute for Plasma Physics, Garching, Germany — 2Technical University of Munich, Garching, Germany
A Python package STRUPHY (STRUcture-Preserving HYbrid codes) features a collection of PDE solvers based on Geometric finite element method (FEEC) and Particle-in-cell method (PIC). One of the main applications of the STRUPHY is a simulation of hybrid MHD-kinetic systems in curved three-dimensional spaces where the bulk plasma is treated as a MHD fluid and energetic particles(EPs) are described kinetically. We introduce energy-conserving hybrid MHD-driftkinetic models which were newly implemented in STRUPHY. Existing hybrid MHD-kinetic models often suffer from not conserving the total energy, especially when reduced kinetic models are used to describe EPs such as driftkinetic or gyrokinetic. However, this property was recently recovered by adding additional terms derived from variational principles. The investigation of the conservation laws on the discrete level will be considered with the preliminary results of the ITPA benchmark case.
Keywords: STRUPHY; structure-preserving; hybrid; mhd-driftkinetic; TAE