München 2019 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
P: Fachverband Plasmaphysik
P 18: Postersitzung
P 18.77: Poster
Donnerstag, 21. März 2019, 16:30–18:30, Foyer Audimax
Hybrid drift kinetic electron - kinetic ion computations for electrostatic fluctuations in astrophysical plasmas — •Karen Pommois1, Simon Lautenbach2, Florian Allman-Rahn2, Felipe Nathan De Oliveira1, Rainer Grauer2, and Daniel Told1 — 1Max Planck Institut für Plasmaphysik, Boltzmannstraße 2, 85748 Garching bei München — 2Ruhr Universität Bochum, Universitätsstraße 150, 44801 Bochum
Kinetic numerical simulations, applied to study local heating in the solar wind, are computationally expensive due to the different evolution scales involved in the dynamics. Therefore, simplified models, such as hybrid fluid-kinetic and gyrokinetic, are widely employed. However, gyrokinetics is missing waves with frequencies above the cyclotron frequencies of the species involved and the hybrid-fluid model is missing electron kinetic effects even at ion scales [1]. Therefore, a more suitable and computationally lighter model to investi- gate kinetic effects in astrophysical plasma simulations could employ a hybrid description, composed of kinetic ions and gyrokinetic electrons. In this poster we will show our first numerical steps, where we implemented this hybrid model in the case of electrostatic dynamics and drift-kinetic electrons. This hybrid model will be included in MuPhy [2], a framework designed to couple different numerical codes for solving plasma problems.
References
[1] D. Told et al. In: New J. Phys. 18.6 (2016), p. 065011.
[2] S. Lautenbach and R. Grauer. In: Front. Phys. 6 (2018), p. 113.