Göttingen 2025 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
P: Fachverband Plasmaphysik
P 18: Codes and Modeling/HEPP
P 18.2: Vortrag
Donnerstag, 3. April 2025, 11:30–11:55, ZHG102
Structure-preserving Hybrid Code, STRUPHY: Energy-conserving Hybrid MHD-driftkinetic Model — •byung kyu na1,2, stefan possanner1, xin wang1, and yingzhe li1 — 1Max Planck Institute for Plasma Physics, Boltzmannstraße 2, 85748 Garching, Germany — 2Technical University of Munich, Boltzmannstraße 3, 85748 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 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 restored by adding additional terms derived from variational principles. The capabilities and properties of the implemented scheme will be investigated with the preliminary results of the ITPA benchmark case.
Keywords: MHD; kinetic; Hybrid; Energetic Particles; TAE