SMuK 2023 – wissenschaftliches Programm

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P: Fachverband Plasmaphysik

P 12: Poster II

P 12.36: Poster

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

Self-consistent neutral gas description in the edge turbulence fluid code GRILLIX — •Konrad Eder, Andreas Stegmeir, Wladimir Zholobenko, and Frank Jenko — Max Planck Institute for Plasma Physics, Boltzmannstraße 2, 85748 Garching, Germany

The edge turbulence fluid code GRILLIX employs a diffusive neutral gas model to describe plasma-neutrals interactions arising from ionization, recombination, and charge exchange processes [1]. This inclusion of neutral gas physics has been found to significantly improve the agreement of simulated plasma profiles with experiment data [1,2,3].

Presently, the model requires prescribing the neutrals density at the divertor, introducing a new free parameter to the code. As we move toward simulations of detached plasmas, we seek to alter this boundary condition in order to self-consistently describe the recycling fluxes at the targets. For this purpose, a diagnostics framework has been developed to verify the implementation of recycling boundary conditions and assess particle conservation properties of the code.
[1] W. Zholobenko et al., 2021 Nucl. Fusion, 61 116015.

[2] D.S. Oliveira and T.Body et. al., 2021 Nucl. Fusion 62 096001.

[3] K. Eder, 2022 Technical University of Munich, Master thesis.