Non-linear MHD modeling of edge localized mode cycles and mitigation by resonant magnetic perturbations

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F15%3A00454112" target="_blank" >RIV/61389021:_____/15:00454112 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1088/0741-3335/57/1/014020" target="_blank" >http://dx.doi.org/10.1088/0741-3335/57/1/014020</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/0741-3335/57/1/014020" target="_blank" >10.1088/0741-3335/57/1/014020</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Non-linear MHD modeling of edge localized mode cycles and mitigation by resonant magnetic perturbations

Popis výsledku v původním jazyce

The dynamics of a multi-edge localized mode (ELM) cycle as well as the ELM mitigation by resonant magnetic perturbations (RMPs) are modeled in realistic tokamak X-point geometry with the non-linear reduced MHD code JOREK. The diamagnetic rotation is found to be a key parameter enabling us to reproduce the cyclical dynamics of the plasma relaxations and to model the near-symmetric ELM power deposition on the inner and outer divertor target plates consistently with experimental measurements. Moreover, thenon-linear coupling of the RMPs with unstable modes are found to modify the edge magnetic topology and induce a continuous MHD activity in place of a large ELM crash, resulting in the mitigation of the ELMs. At larger diamagnetic rotation, a bifurcationfrom unmitigated ELMs-at low RMP current-towards fully suppressed ELMs-at large RMP current-is obtained

Název v anglickém jazyce

Non-linear MHD modeling of edge localized mode cycles and mitigation by resonant magnetic perturbations

Popis výsledku anglicky

The dynamics of a multi-edge localized mode (ELM) cycle as well as the ELM mitigation by resonant magnetic perturbations (RMPs) are modeled in realistic tokamak X-point geometry with the non-linear reduced MHD code JOREK. The diamagnetic rotation is found to be a key parameter enabling us to reproduce the cyclical dynamics of the plasma relaxations and to model the near-symmetric ELM power deposition on the inner and outer divertor target plates consistently with experimental measurements. Moreover, thenon-linear coupling of the RMPs with unstable modes are found to modify the edge magnetic topology and induce a continuous MHD activity in place of a large ELM crash, resulting in the mitigation of the ELMs. At larger diamagnetic rotation, a bifurcationfrom unmitigated ELMs-at low RMP current-towards fully suppressed ELMs-at large RMP current-is obtained

Druh

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

CEP obor

BL - Fyzika plasmatu a výboje v plynech

OECD FORD obor

—

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

Plasma Physics and Controlled Fusion

ISSN

0741-3335

e-ISSN

—

Svazek periodika

57

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

10

Strana od-do

014020-014020

Kód UT WoS článku

000348194900021

EID výsledku v databázi Scopus

2-s2.0-84913558457