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An overview of dynamical methods for studying transitions between states in sheared plasma flows
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Teaca, Bogdan, Pringle, Christopher C. T., Smith, Oliver J. and McMillan, Ben F. (2023) An overview of dynamical methods for studying transitions between states in sheared plasma flows. Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 381 (2242). 20210238. doi:10.1098/rsta.2021.0238 ISSN 1471-2962.
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Official URL: https://doi.org/10.1098/rsta.2021.0238
Abstract
The self-organization of structures in a tokamak plasma as it undergoes an H -mode transition shows properties similar to simpler shear flow configurations. We will describe recent dynamical studies of plasma shear flows, including the idea of tracking the edge of chaos that separates two bistable states, computing the nonlinear minimal seed that can lead to turbulence, finding the attractor solution on the edge and seeing how starting from this solution we can understand the stability of relative period orbits that permeate the turbulent basin of attraction. We present a modus operandi developed for these simple configurations that can be adapted to understand the H -mode transition. This article is part of a discussion meeting issue ‘H-mode transition and pedestal studies in fusion plasmas’.
Item Type: | Journal Article | ||||||||
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||||
SWORD Depositor: | Library Publications Router | ||||||||
Journal or Publication Title: | Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences | ||||||||
Publisher: | The Royal Society | ||||||||
ISSN: | 1471-2962 | ||||||||
Official Date: | 20 February 2023 | ||||||||
Dates: |
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Volume: | 381 | ||||||||
Number: | 2242 | ||||||||
Article Number: | 20210238 | ||||||||
DOI: | 10.1098/rsta.2021.0238 | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Access rights to Published version: | Free Access (unspecified licence, 'bronze OA') | ||||||||
Copyright Holders: | © 2023 The Author(s) |
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