Erlangen 2018 – wissenschaftliches Programm

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P: Fachverband Plasmaphysik

P 11: Helmholtz Graduate School - Poster

P 11.2: Poster

Dienstag, 6. März 2018, 16:15–18:15, Redoutensaal

Towards nonlinear simulations of full ELM cycles — •Andres Cathey, Matthias Hoelzl, and Francois Orain — Max Planck Institute for Plasma Physics, Boltzmannstr. 2, 85748 Garching, Germany

Edge localized modes (ELMs) in tokamak fusion plasmas have been studied extensively both experimentally and theoretically in particular due to the strong associated heat fluxes which potentially exceed material constraints in ITER. Presently, ELM crash simulations are typically started from a peeling-ballooning unstable equilibrium reconstructed from experiments just before an ELM crash occurs. This way many aspects of single ELM crashes have been reproduced successfully in numerical simulations, but their characteristic periodicity still needs to be simulated consistently. In order to produce a more complete description of ELMs including inter-ELM phase and ELM onset, the full cyclic behaviour has to be consistently modelled. An overview of ELM physics will be given along with plans and first steps towards investigating full ELM cycles using the non-linear MHD code JOREK.