Kinetic and fluid simulations of parallel electron transport during equilibria and transients in the scrape-off layer
File(s)Mijin_2020_Plasma_Phys._Control._Fusion_62_095004.pdf (1.09 MB)
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Author(s)
Mijin, S
Militello, F
Newton, S
Omotani, J
Kingham, RJ
Type
Journal Article
Abstract
We present the first parallel electron transport results obtained using the newly developed 1D transport code SOL-KiT. With the capability to switch between consistent kinetic and fluid models for the electrons, we explore and report the differences in both equilibrium and transient simulations. Significant kinetic effects are found during transients, especially in the behaviour of the electron sheath heat transmission coefficient, which shows up to an eightfold increase. Equilibria are obtained for an input power scan with parameters relevant to medium size tokamaks. Detached equilibria are found to persist to higher input powers when electrons are treated kinetically. Furthermore, non-monotonic behaviour of the electron sheath heat transmission coefficient is observed in the power scan, with values being up to 40% above the classical value. We discuss the implications of the pr
Date Issued
2020-09-01
Date Acceptance
2020-06-10
Citation
Plasma Physics and Controlled Fusion, 2020, 62 (9)
ISSN
0741-3335
Publisher
IOP Publishing
Journal / Book Title
Plasma Physics and Controlled Fusion
Volume
62
Issue
9
Copyright Statement
© 2020 The Author(s). Published by IOP Publishing Ltd. Original Content from this work may be used under theterms of theCreative Commons Attribution 4.0 licence. Anyfurther distribution of this work must maintain attribution to the author(s) andthe title of the work, journal citation and DOI.
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http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000555590500001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Subjects
Science & Technology
Physical Sciences
Physics, Fluids & Plasmas
Physics
scrape-off layer
kinetic
fluid
simulatio
electron
parallel
COLLISIONAL-RADIATIVE MODEL
HEAT-FLUX
DIVERTOR
PLASMAS
CODE
IMPLICIT
EQUATION
Publication Status
Published
Article Number
ARTN 095004
Date Publish Online
2020-07-21