Ginzburg-Landau Model in a Finite Shear-Layer and Onset of Transport Barrier Nonlinear Oscillations: A Paradigm for Type-III ELMs
SCIE
SCOPUS
- Title
- Ginzburg-Landau Model in a Finite Shear-Layer and Onset of Transport Barrier Nonlinear Oscillations: A Paradigm for Type-III ELMs
- Authors
- Leconte, M.; Jeon, Y. M.; Yun, G. S.
- Date Issued
- 2016-08
- Publisher
- WILEY
- Abstract
- We study a Reaction-Diffusion model describing the nonlinear oscillations of a transport barrier in a finite shear-layer (width dE << a), where a is the plasma minor radius, based on a 1D reduced model derived to explain nonlinear barrier oscillations in 3D turbulence simulations [P. Beyer, S. Benkadda, G. Fuhr-Chaudier et al., Phys. Rev. Lett. 94, 105001 (2005)]. We show that this single nonlinear equation encompasses most of the physics of these barrier relaxations. The nonlinear oscillations have common characteristics with type-III edge localized modes (ELMs), such as a repetition frequency which decreases with increasing power. In addition to the flow shear, the shear-layer width is also shown to control the nature of the oscillations. ((c) 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/39269
- DOI
- 10.1002/ctpp.201610050
- ISSN
- 0863-1042
- Article Type
- Article
- Citation
- CONTRIBUTIONS TO PLASMA PHYSICS, vol. 56, no. 6-8, page. 736 - 741, 2016-08
- Files in This Item:
- There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.