Reduced-magnetohydrodynamic simulations of toroidally and poloidally localized edge localized modes

Journal Article · Wed Aug 15 00:00:00 EDT 2012 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4742994· OSTI ID:22086033

Hoelzl, M; Guenter, S; Mueller, W -C; Lackner, K; Krebs, I ^[1]; Wenninger, R P ^[2]; Huysmans, G T. A. ^[3]

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1. Max-Planck-Institut fuer Plasmaphysik, EURATOM Association, Boltzmannstrasse 2, 85748 Garching (Germany)
2. Universitaetssternwarte der Ludwig-Maximilians-Universitaet, 81679 Muenchen (Germany)
3. ITER Organisation, Route de Vinon sur Verdon, St-Paul-lez-Durance (France)

We use the non-linear reduced-magnetohydrodynamic code JOREK to study edge localized modes (ELMs) in the geometry of the ASDEX Upgrade tokamak. Toroidal mode numbers, poloidal filament sizes, and radial propagation speeds of filaments into the scrape-off layer are in good agreement with observations for type-I ELMs in ASDEX Upgrade. The observed instabilities exhibit a toroidal and poloidal localization of perturbations which is compatible with the 'solitary magnetic perturbations' recently discovered in ASDEX Upgrade [R. Wenninger et al., 'Solitary magnetic perturbations at the ELM onset,' Nucl. Fusion (accepted)]. This localization can only be described in numerical simulations with high toroidal resolution.

• OSTI ID: 22086033
• Journal Information: Physics of Plasmas, Vol. 19, Issue 8; Other Information: (c) 2012 Euratom; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ASDEX TOKAMAK
COMPUTERIZED SIMULATION
DISTURBANCES
EDGE LOCALIZED MODES
FILAMENTS
MAGNETOHYDRODYNAMICS
NONLINEAR PROBLEMS
PLASMA SCRAPE-OFF LAYER
RESOLUTION
TOROIDAL CONFIGURATION