SMuK 2023 – wissenschaftliches Programm

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P: Fachverband Plasmaphysik

P 12: Poster II

P 12.38: Poster

Mittwoch, 22. März 2023, 17:30–19:00, HSZ EG

Structure-preserving hybrid code, STRUPHY: energy-conserving hybrid MHD-driftkinetic models — •Byung Kyu Na^1,2, Stefan Possanner¹, Florian Holderied¹, and Yingzhe Li¹ — ¹Max Planck Institute for Plasma Physics, Garching, Germany — ²Technical University of Munich, Garching, Germany

STRUPHY (STRUcture-Preserving HYbrid codes) is a Python package for the simulation of energetic particles (EPs) in plasma. The package features a collection of PDE solvers for hybrid fluid-kinetic systems in curved three-dimensional spaces where the bulk plasma is treated as a fluid and the EPs are described kinetically (Particle-In-Cell method). The discretization is based on the GEMPIC framework. We will 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 some simulation results.