Simulations with current constraints of ELM- induced tungsten melt motion in ASDEX Upgrade.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F17%3A00478613" target="_blank" >RIV/61389021:_____/17:00478613 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1088/1402-4896/aa8855" target="_blank" >http://dx.doi.org/10.1088/1402-4896/aa8855</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1402-4896/aa8855" target="_blank" >10.1088/1402-4896/aa8855</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Simulations with current constraints of ELM- induced tungsten melt motion in ASDEX Upgrade.

Popis výsledku v původním jazyce

Melt motion simulations of recent ASDEX Upgrade experiments on transient-induced melting of a tungsten leading edge during ELMing H-mode are performed with the incompressible fluid dynamics code MEMOS 3D. The total current flowing through the sample was measured in these experiments providing an important constraint for the simulations since thermionic emission is considered to be responsible for the replacement current driving melt motion. To allow for a reliable comparison, the description of the space-charge limited regime of thermionic emission has been updated in the code. The effect of non-periodic aspects of the spatio-temporal heat flux in the temperature distribution and melt characteristics as well as the importance of current limitation are investigated. The results are compared with measurements of the total current and melt profile.

Název v anglickém jazyce

Simulations with current constraints of ELM- induced tungsten melt motion in ASDEX Upgrade.

Popis výsledku anglicky

Melt motion simulations of recent ASDEX Upgrade experiments on transient-induced melting of a tungsten leading edge during ELMing H-mode are performed with the incompressible fluid dynamics code MEMOS 3D. The total current flowing through the sample was measured in these experiments providing an important constraint for the simulations since thermionic emission is considered to be responsible for the replacement current driving melt motion. To allow for a reliable comparison, the description of the space-charge limited regime of thermionic emission has been updated in the code. The effect of non-periodic aspects of the spatio-temporal heat flux in the temperature distribution and melt characteristics as well as the importance of current limitation are investigated. The results are compared with measurements of the total current and melt profile.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10300 - Physical sciences

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

Physica Scripta

ISSN

0031-8949

e-ISSN

—

Svazek periodika

T170

Číslo periodika v rámci svazku

December

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

7

Strana od-do

—

Kód UT WoS článku

000414120500006

EID výsledku v databázi Scopus

2-s2.0-85030833199