Nonlinear dynamics of multiple neoclassical tearing modes in tokamaks - Aix-Marseille Université Access content directly
Journal Articles Physics of Plasmas Year : 2005

Nonlinear dynamics of multiple neoclassical tearing modes in tokamaks

Abstract

Numerical simulations investigating the interaction of co-existent 2/1 and 3/1 neoclassical tearing modes are presented. The results obtained from an initial value 3D toroidal code that solves a set of generalized reduced MHD equations exhibit a host of complex phenomena arising from the coupling of the two modes. These include a modification of the island saturation widths of the two modes, a significant modification in the perpendicular flow patterns in the vicinity of the islands, and the excitation of geodesic acoustic mode like oscillations that lead to concomitant oscillations in the kinetic and magnetic energies of the islands. These oscillations only occur in the presence of the neoclassical stress tensor contribution and are absent for two coupled classical tearing modes.
Fichier principal
Vignette du fichier
PoP_2013_ChandraAgullo.pdf (2.86 Mo) Télécharger le fichier
Origin : Files produced by the author(s)
Loading...

Dates and versions

hal-01625882 , version 1 (06-02-2018)

Identifiers

Cite

D. Chandra, Olivier Agullo, S. Benkadda, X. Garbet, A. Sen. Nonlinear dynamics of multiple neoclassical tearing modes in tokamaks . Physics of Plasmas, 2005, 20, pp.042505. ⟨10.1063/1.4799823⟩. ⟨hal-01625882⟩
43 View
113 Download

Altmetric

Share

Gmail Facebook X LinkedIn More