Advanced spatially hybrid fluid-kinetic modelling of plasma-edge neutrals and application to ITER case using SOLPS-ITER

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Journal Title
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Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2022-06-01
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Language
en
Pages
12
Series
Contributions to Plasma Physics
Abstract
A spatially hybrid fluid-kinetic approach for the efficient simulation of plasma-edge neutrals is extended with a kinetic-fluid condensation process and an automated approach to select a fluid or kinetic treatment at each point along the divertor targets. With the proposed hybrid fluid-kinetic methods, the dominant charge–exchange reaction can be largely removed from the kinetic neutral simulation. The hybrid methods achieve quantitative agreement with the standard kinetic approach, with relative errors on the peak target plasma density and peak target ion flux density of 5–30%, while the Central Processing Unit (CPU) time for the kinetic neutral solver is reduced by a factor 3–6.
Description
| openaire: EC/H2020/633053/EU//EUROfusion Funding Information: The first author is funded by a PhD fellowship of the Research Foundation—Flanders. This work has been carried out within the framework of the EUROfusion Consortium and has received funding from the Euratom research and training programme 2014–2018 and 2019–2020 under grant agreement No 633053. The views and opinions expressed herein do not necessarily reflect those of the European Commission. The computational resources and services used in this work were provided by the VSC (Flemish Supercomputer Centre), funded by the Research Foundation Flanders (FWO), and the Flemish Government—department EWI. 1 Publisher Copyright: © 2022 Wiley-VCH GmbH.
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Citation
Van Uytven, W, Dekeyser, W, Blommaert, M, Horsten, N, Marandet, Y & Baelmans, M 2022, ' Advanced spatially hybrid fluid-kinetic modelling of plasma-edge neutrals and application to ITER case using SOLPS-ITER ', Contributions to Plasma Physics, vol. 62, no. 5-6, 202100191 . https://doi.org/10.1002/ctpp.202100191