Application of a two-fluid two-point model to SolEdge2D-EIRENE simulations of TCV H-mode plasma. (January 2019)

• Record Type: Journal Article
• Authors: Nespoli, F.; Bufferand, H.; Valentinuzzi, M.; Fedorczak, N.; Ciraolo, G.; Serre, E.; Marandet, Y.; Maurizio, R.; De Oliveira, H.; Labit, B.; Komm, M.; Faitsch, M.; Elmore, S.
• Is Part Of: Nuclear materials and energy. Volume 18(2019)
• Page Start: 29
• Page End: 34
• Publication Date: 2019-01
• Subjects: Scrape-off layer -- Plasma -- Simulations -- Transport -- Two-point model -- TCV; Nuclear energy -- Periodicals; Nuclear fuels -- Periodicals; Nuclear reactors -- Materials -- Periodicals; Radioactive substances -- Periodicals; 621.4833
• DOI: 10.1016/j.nme.2018.11.026
• Languages: English
• ISSNs: 2352-1791

Abstract

Highlights: Simulations of a TCV H-mode plasma have been performed with SolEdge2D-EIRENE, featuring carbon impurities sputtered from the wall. The agreement with the experimental data is in general satisfactory, but the application of the two-point model to the simulation results leads to apparent momentum gain. The application of a two-fluid two-point model to the simulation results overcomes this apparent discrepancy. 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.