Numerical studies of plasma edge in W7-X with 3D FINDIF code

• Autorzy: Jabłczyńska Małgorzata , Pełka Grzegorz , Jakubowski Marcin , Ślęczka Marcin

Identyfikatory

DOI

10.2478/nuka-2023-0011

• Języki publikacji: EN

Abstrakty

EN

Modelling of the plasma transport for inherently three-dimensional (3D) problems as in stellarators requires dedicated complex codes. FINDIF is a 3D multifl uid plasma edge transport code that has been previously successfully used for the analysis of energy transport in the TEXTOR-DED tokamak [1], where 3D perturbations led to an ergodic structure of fi eld lines in the plasma edge. The ongoing efforts to apply it meaningfully to Wendelstein 7-X (W7-X) plasma problems resulted in advancements in the main model and accompanying tools for mesh generation and post-processing. In order to verify the applicability of the code and to compare with the reported simulation (EMC3-EIRENE) and experimental (OP1.1) results, a series of simulations for varying plasma density, temperature and anomalous transport coeffi cients as well as for fi xed input power were performed. The connection length pattern of FINDIF traced magnetic fi eld lines on the limiter was reproduced and its impact on heat loads was confi rmed. An increase in the peak heat load on the limiter with a rise in plasma density, temperature and anomalous plasma transport coeffi cients was observed. The decay lengths of density, electron temperature and heat fl ux did not change with density, and were decreasing with temperature and increasing with anomalous plasma transport coeffi cient, which was compared to the simple scrape-off layer (SOL) model.

Słowa kluczowe

EN

3D modelling; limiter; scrape-off layer; stellarator; Wendelstein 7X

• Wydawca: Institute of Nuclear Chemistry and Technology
• Czasopismo: Nukleonika
• Rocznik: 2023
• Tom: Vol. 68, No. 4
• Strony: 83--90
• Opis fizyczny: Bibliogr. 17 poz., rys.

Twórcy

autor

Jabłczyńska Małgorzata

• Institute of Plasma Physics and Laser Microfusion Hery 23 St., 01-497 Warsaw, Poland

autor

Pełka Grzegorz

• Institute of Plasma Physics and Laser Microfusion Hery 23 St., 01-497 Warsaw, Poland

• https://orcid.org/0000-0003-1473-1069

autor

Jakubowski Marcin

• Max-Planck-Institut für Plasmaphysik Greifswald, Germany

• https://orcid.org/0000-0002-6557-3497

autor

Ślęczka Marcin

• Institute of Physics, University of Szczecin Szczecin, Poland

• https://orcid.org/0000-0003-0592-5611

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).