Nesrovnalost mezi modelovým a experimentálním radiálním elektrickým polem v okrajovém plazmatu divertorových tokamaků: výzva pro 2D tekutinové kódy?

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F07%3A00085355" target="_blank" >RIV/61389021:_____/07:00085355 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Discrepancy between modelled and measured radial electric fields in the scrape-off layer divertor tokamaks: a challenge for 2D fluid codes?

Popis výsledku v původním jazyce

Examination of radial electric field (Er ) profiles in the scrape-off layer (SOL) of ASDEX Upgrade (AUG) and JETrevealed large discrepancies between 2D fluid edge modelling and experiment. Experimental profiles of plasma potential (Vp) in the outer (lowfield) side of the plasma, obtained with reciprocating Langmuir probes, decay radially with electron temperature, Te, with the eEr/Te ratio being 1.5. In contrast, code simulated Er are fairly low in most of the SOL (compared with Te/e). Modelling with kinetic treatment of neutrals and drifts was performed using the SOLPS code for AUG cases and EDGE2D Nimbus for JET cases. The Te and Er discrepancies, as well as discrepancies between simulated and experimental parallel ion flows, raise a question of thevalidity of fluid codes for the plasma edge modelling and prompt the inclusion of kinetic effects into present day 2D fluid codes which assume strong collisionality.

Název v anglickém jazyce

Discrepancy between modelled and measured radial electric fields in the scrape-off layer divertor tokamaks: a challenge for 2D fluid codes?

Popis výsledku anglicky

Examination of radial electric field (Er ) profiles in the scrape-off layer (SOL) of ASDEX Upgrade (AUG) and JETrevealed large discrepancies between 2D fluid edge modelling and experiment. Experimental profiles of plasma potential (Vp) in the outer (lowfield) side of the plasma, obtained with reciprocating Langmuir probes, decay radially with electron temperature, Te, with the eEr/Te ratio being 1.5. In contrast, code simulated Er are fairly low in most of the SOL (compared with Te/e). Modelling with kinetic treatment of neutrals and drifts was performed using the SOLPS code for AUG cases and EDGE2D Nimbus for JET cases. The Te and Er discrepancies, as well as discrepancies between simulated and experimental parallel ion flows, raise a question of thevalidity of fluid codes for the plasma edge modelling and prompt the inclusion of kinetic effects into present day 2D fluid codes which assume strong collisionality.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BL - Fyzika plasmatu a výboje v plynech

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2007

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Nuclear Fusion

ISSN

0029-5515

e-ISSN

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Svazek periodika

47

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

AT - Rakouská republika

Počet stran výsledku

11

Strana od-do

479-489

Kód UT WoS článku

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EID výsledku v databázi Scopus

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