SMuK 2023 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

P: Fachverband Plasmaphysik

P 12: Poster II

P 12.40: Poster

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

Characterisation of edge-SOL turbulence with GRILLIX in single null and advanced divertor configurations — •Jan Pfennig, Wladimir Zholobenko, Andreas Stegmeir, and Frank Jenko — Max Planck Institute for Plasma Physics, Boltzmannstraße 2, 85748 Garching bei München, Germany

Turbulent transport across the magnetic field in magnetic confinement fusion devices, especially in the plasma edge and scrape-off layer (SOL), where steep gradients are observed, is of key interest because of two main reasons:

1.   (i): It has a severe impact on the heat exhaust and hence on the energy confinement of the device
2. (ii): It is also responsible for the exhaust of helium ashes produced by the fusion reaction

Turbulence phenomena remain difficult to analyze experimentally and are not fully captured by transport codes due to non-local drive of turbulence as well as intermittent, ballistic transport of filaments (blobs) into the SOL. Hence, high-fidelity global turbulence simulations in realistic diverted geometries represent an important tool in quantitative predictions of tokamak plasma turbulence. Here we present in-depth analysis of global turbulence simulations performed with the GRILLIX code, which implements the two-fluid Braginskii equations in the flux-coordinate indepented (FCI) approach. Thus, abirtrarily complex magnetic geometries can be investigated.