Application of a two-fluid two-point model to SolEdge2D-EIRENE simulations of TCV H-mode plasma

F. Nespoli 1 H. Bufferand 2 M. Valentinuzzi 3 N. Fedorczak 2 G. Ciraolo 2 Eric Serre 1 Y. Marandet 3 R. Maurizio H. de Oliveira B. Labit M. Komm M. Faitsch S. Elmore
1 M2P2 - Laboratoire de Mécanique, Modélisation et Procédés Propres
2 IRFM - Institut de Recherche sur la Fusion par confinement Magnétique
3 PIIM - Physique des interactions ioniques et moléculaires
Abstract : The edge and scrape-off layer (SOL) plasma of the inter-ELM phase of an H-mode discharge from the TCV tokamak is modeled with the transport code SolEdge2D-EIRENE (Bufferand et al. Nuclear Fusion 55 (2015)). The numerical simulations, in presence and in absence of C impurities sputtered from the first wall, are presented and compared with the experiments, finding an overall good agreement. The application of the standard two-point model to the simulation results leads to an apparent momentum gain along the divertor leg. A two-fluid two-point model featuring thermally decoupled ions and electrons is introduced and applied to the simulation results, overcoming this apparent discrepancy.
Keywords : Scrape-off layer Plasma Simulations Transport Two-point model TCV
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Journal articles
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https://hal.archives-ouvertes.fr/hal-02176505
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Submitted on : Monday, July 8, 2019 - 11:42:59 AM
Last modification on : Tuesday, July 9, 2019 - 1:24:26 AM

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F. Nespoli, H. Bufferand, M. Valentinuzzi, N. Fedorczak, G. Ciraolo, et al.. Application of a two-fluid two-point model to SolEdge2D-EIRENE simulations of TCV H-mode plasma. Nuclear Materials and Energy, Elsevier, 2019, 18, pp.29-34. ⟨10.1016/j.nme.2018.11.026⟩. ⟨hal-02176505⟩

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