Numerical evaluation of heat flux and surface temperature on a misaligned JET divertor W lamella during ELMs

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F14%3A10289763" target="_blank" >RIV/00216208:11320/14:10289763 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61389021:_____/14:00435425

Výsledek na webu

<a href="http://dx.doi.org/10.1088/0029-5515/54/12/123011" target="_blank" >http://dx.doi.org/10.1088/0029-5515/54/12/123011</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/0029-5515/54/12/123011" target="_blank" >10.1088/0029-5515/54/12/123011</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Numerical evaluation of heat flux and surface temperature on a misaligned JET divertor W lamella during ELMs

Popis výsledku v původním jazyce

A series of experiments has been performed on JET to investigate the dynamics of transient melting due to edge localized modes (ELMs). The experiment employs a deliberately misaligned lamella in one module of the JET bulk tungsten outer divertor, allowing the combination of stationary power flux and ELMs to transiently melt the misaligned edge. During the design of the experiment a number of calculations were performed using 2D particle-in-cell simulations and a heat transfer code to investigate the influence on the deposited power flux of finite Larmor radius effects associated with the energetic ELM ions. This has been performed using parameter scans inside a range of pedestal temperatures and densities to scope different experimentally expected ELMenergies. On the one hand, we observe optimistic results, with smoothing of the heat flux due to the Larmor gyration on the protruding side of the lamella which sees the direct parallel flux-the deposited power tends to be lower than the

Název v anglickém jazyce

Numerical evaluation of heat flux and surface temperature on a misaligned JET divertor W lamella during ELMs

Popis výsledku anglicky

A series of experiments has been performed on JET to investigate the dynamics of transient melting due to edge localized modes (ELMs). The experiment employs a deliberately misaligned lamella in one module of the JET bulk tungsten outer divertor, allowing the combination of stationary power flux and ELMs to transiently melt the misaligned edge. During the design of the experiment a number of calculations were performed using 2D particle-in-cell simulations and a heat transfer code to investigate the influence on the deposited power flux of finite Larmor radius effects associated with the energetic ELM ions. This has been performed using parameter scans inside a range of pedestal temperatures and densities to scope different experimentally expected ELMenergies. On the one hand, we observe optimistic results, with smoothing of the heat flux due to the Larmor gyration on the protruding side of the lamella which sees the direct parallel flux-the deposited power tends to be lower than the

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

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2014

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

—

Svazek periodika

54

Číslo periodika v rámci svazku

12

Stát vydavatele periodika

AT - Rakouská republika

Počet stran výsledku

12

Strana od-do

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Kód UT WoS článku

000345579800017

EID výsledku v databázi Scopus

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