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

M. Hölzl, S. Günter, R.P. Wenninger, W.-C. Müller, G.T.A. Huysmans, K. Lackner, I. Krebs

Research output: Contribution to journalArticleAcademicpeer-review

24 Citations (Scopus)

Abstract

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.
Original languageEnglish
Pages (from-to)82505
JournalPhysics of Plasmas
Volume19
Issue number8
DOIs
Publication statusPublished - 1 Aug 2012
Externally publishedYes

Keywords

  • filamentation instability
  • plasma boundary layers
  • plasma magnetohydrodynamics
  • plasma nonlinear processes
  • plasma simulation
  • plasma toroidal confinement
  • Magnetohydrodynamics
  • Nonlinear phenomena: waves wave propagation and other interactions
  • Macroinstabilities
  • Plasma-material interactions
  • boundary layer effects
  • Tokamaks spherical tokamaks
  • Perturbative methods

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