期刊
NUCLEAR FUSION
卷 62, 期 3, 页码 -出版社
IOP Publishing Ltd
DOI: 10.1088/1741-4326/ac47b8
关键词
plasma physics; tokamak boundary; neutral-plasma interaction; molecular dynamics; multi-component plasma; controlled fusion; kinetic neutrals
资金
- Fond National Suisse de la Recherche Scientifique
- Euratom research and training programme 2014-2018 [633053]
- Euratom research and training programme 2019-2020 [633053]
- CSCS (Swiss National Supercomputing Center) [s882]
A self-consistent model for simulating a multi-component plasma in the tokamak boundary is presented. The model takes into account a deuterium plasma with various collisional interactions between plasma and neutral species. The study also derives equations describing turbulent plasma dynamics and advection equations for neutral species, and discusses their numerical implementation.
A self-consistent model is presented for the simulation of a multi-component plasma in the tokamak boundary. A deuterium plasma is considered, with the plasma species that include electrons, deuterium atomic ions and deuterium molecular ions, while the deuterium atoms and molecules constitute the neutral species. The plasma and neutral models are coupled via a number of collisional interactions, which include dissociation, ionization, charge-exchange and recombination processes. The derivation of the three-fluid drift-reduced Braginskii equations used to describe the turbulent plasma dynamics is presented, including its boundary conditions. The kinetic advection equations for the neutral species are also derived, and their numerical implementation discussed. The first results of multi-component plasma simulations carried out by using the global Braginskii solver (GBS) code are then presented and analyzed, being compared with results obtained with the single-component plasma model.
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