SMuK 2023 – scientific programme
Parts | Days | Selection | Search | Updates | Downloads | Help
P: Fachverband Plasmaphysik
P 14: Magnetic Confinement IV/HEPP VI
P 14.3: Talk
Thursday, March 23, 2023, 11:55–12:20, CHE/0091
Gyrokinetic simulations of turbulent transport in the edge and scrape-off layer of TCV — •Philipp Ulbl1, Andreas Stegmeir1, and Frank Jenko1,2 — 1Max Planck Institute for Plasma Physics, Boltzmannstraße 2, 85748 Garching, Germany — 2University of Texas at Austin, Austin, TX 78712, USA
Turbulence in the edge and scrape-off layer (SOL) region of magnetic confinement fusion devices is of high relevance for the feasibility of fusion energy. Two important properties of a future fusion reactor, confinement and heat exhaust, are largely affected by turbulence. This requires the development of predictive edge turbulence codes.
In this work, we present the latest improvements to the grid-based gyrokinetic turbulence code, GENE-X [1], with applications to the TCV tokamak [2]. GENE-X is specifically targeted for edge and SOL simulations, since it can perform simulations in realistic, diverted geometries. It features a full-f, electromagnetic, gyrokinetic turbulence model and recently, collisional effects were introduced.
We present the results of multiple GENE-X simulations using different collision models, which vary in their physics fidelity. We analyze the resulting plasma profiles and heat fluxes, and compare against the experiment. The code validation improves with the fidelity of the collision model. Based on this, we assess and discuss collisional effects on gyrokinetic turbulence in the edge and SOL.
[1] D. Michels, et. al., Comput. Phys. Commun. 264, 107986 (2021)
[2] D. S. Oliveira, T. Body, et. al., Nucl. Fusion 62, 096001 (2022)