Počet záznamů: 1
Theory-based scaling laws of near and far scrape-off layer widths in single-null L-mode discharges
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SYSNO ASEP 0544085 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Theory-based scaling laws of near and far scrape-off layer widths in single-null L-mode discharges Tvůrce(i) Giacomin, M. (CH)
Stagni, R. (IT)
Ricci, P. (CH)
Boedo, J. A. (US)
Horáček, Jan (UFP-V) RID, ORCID
Reimerdes, H. (CH)
Tsui, C.K. (US)Celkový počet autorů 7 Číslo článku 076002 Zdroj.dok. Nuclear Fusion. - : Institute of Physics Publishing - ISSN 0029-5515
Roč. 61, č. 7 (2021)Poč.str. 18 s. Jazyk dok. eng - angličtina Země vyd. AT - Rakousko Klíč. slova gbs ; plasma turbulence ; scrape-off layer width Vědní obor RIV BL - Fyzika plazmatu a výboje v plynech Obor OECD Fluids and plasma physics (including surface physics) CEP GA20-28161S GA ČR - Grantová agentura ČR EF16_013/0001551 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Způsob publikování Omezený přístup Institucionální podpora UFP-V - RVO:61389021 UT WOS 000655259000001 EID SCOPUS 85107813670 DOI 10.1088/1741-4326/abf8f6 Anotace Theory-based scaling laws of the near and far scrape-off layer (SOL) widths are analytically derived for L-mode diverted tokamak discharges by using a two-fluid model. The near SOL pressure and density decay lengths are obtained by leveraging a balance among the power source, perpendicular turbulent transport across the separatrix, and parallel losses at the vessel wall, while the far SOL pressure and density decay lengths are derived by using a model of intermittent transport mediated by filaments. The analytical estimates of the pressure decay length in the near SOL is then compared to the results of three-dimensional, flux-driven, global, two-fluid turbulence simulations of L-mode diverted tokamak plasmas, and validated against experimental measurements taken from an experimental multi-machine database of divertor heat flux profiles, showing in both cases a very good agreement. Analogously, the theoretical scaling law for the pressure decay length in the far SOL is compared to simulation results and to experimental measurements in TCV L-mode discharges, pointing out the need of a large multi-machine database for the far SOL decay lengths. Pracoviště Ústav fyziky plazmatu Kontakt Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Rok sběru 2022 Elektronická adresa https://iopscience.iop.org/article/10.1088/1741-4326/abf8f6
Počet záznamů: 1