[Étude de la propagation des ondes dans différents types de plasmas via différentes méthodes de simulation, avec des illustrations de futures applications potentielles]
Comprendre dans les plasmas les mécanismes régissant la propagation des ondes peut s'avérer complexe, en particulier s' ils sont magnétisés, donc anisotropes et turbulents, donc diffusifs, voire inhomogènes et non stationnaires. La simulation d'un type de plasma avec ses caractéristiques propres passe d'abord par un choix adapté d'équations, suivi par celui d'un schéma numérique accompagné de conditions aux limites spécifiques répondant aux contraintes du problème étudié. Nous discuterons l'impact de ces choix sur la qualité des évaluations numériques en fonction de l'ordre du schéma numérique et du nombre de points de grille par longueur d'onde. Une brève revue des sujets d'intérêt portant sur des conditions de bord de type « gaine » et « transparent » en milieu anisotrope est réalisée, et une discussion sur la propagation en plasmas turbulents appliquée, entre autres, aux développements de diagnostics conclut cet instantané sur les travaux actuels.
The understanding of wave propagation in turbulent magnetized plasmas can be rather complex, particularly if they are inhomogeneous and time-dependent. Simulation can be a useful tool for wave propagation studies, provided that the “model” equations take into account the characteristics of the medium relevant for the studied problem and that the numerical scheme including boundary conditions is stable and accurate enough. The choices for the model equations and the corresponding schemes are analyzed and discussed as a function of various parameters, such as the order of the numerical scheme and the number of grid points per wavelength. A quick review of the up-to-date numerical developments is given on the sheath boundary conditions and on the perfect matching layer in anisotropic media. Possible developments of plasma diagnostics conclude this state-of-the-art of simulations of electromagnetic waves in plasmas.
Mot clés : Plasma, Ondes, Simulation, Chauffage, Diagnostic
@article{CRPHYS_2014__15_5_421_0,
author = {St\'ephane Heuraux and \'Eric Faudot and Filipe da Silva and Jonathan Jacquot and Laurent Colas and S\'ebastien Hacquin and Natalia Teplova and Kate Syseova and Evgeniy Gusakov},
title = {Study of wave propagation in various kinds of plasmas using adapted simulation methods, with illustrations on possible future applications},
journal = {Comptes Rendus. Physique},
pages = {421--429},
publisher = {Elsevier},
volume = {15},
number = {5},
year = {2014},
doi = {10.1016/j.crhy.2014.04.004},
language = {en},
}
TY - JOUR AU - Stéphane Heuraux AU - Éric Faudot AU - Filipe da Silva AU - Jonathan Jacquot AU - Laurent Colas AU - Sébastien Hacquin AU - Natalia Teplova AU - Kate Syseova AU - Evgeniy Gusakov TI - Study of wave propagation in various kinds of plasmas using adapted simulation methods, with illustrations on possible future applications JO - Comptes Rendus. Physique PY - 2014 SP - 421 EP - 429 VL - 15 IS - 5 PB - Elsevier DO - 10.1016/j.crhy.2014.04.004 LA - en ID - CRPHYS_2014__15_5_421_0 ER -
%0 Journal Article %A Stéphane Heuraux %A Éric Faudot %A Filipe da Silva %A Jonathan Jacquot %A Laurent Colas %A Sébastien Hacquin %A Natalia Teplova %A Kate Syseova %A Evgeniy Gusakov %T Study of wave propagation in various kinds of plasmas using adapted simulation methods, with illustrations on possible future applications %J Comptes Rendus. Physique %D 2014 %P 421-429 %V 15 %N 5 %I Elsevier %R 10.1016/j.crhy.2014.04.004 %G en %F CRPHYS_2014__15_5_421_0
Stéphane Heuraux; Éric Faudot; Filipe da Silva; Jonathan Jacquot; Laurent Colas; Sébastien Hacquin; Natalia Teplova; Kate Syseova; Evgeniy Gusakov. Study of wave propagation in various kinds of plasmas using adapted simulation methods, with illustrations on possible future applications. Comptes Rendus. Physique, Volume 15 (2014) no. 5, pp. 421-429. doi : 10.1016/j.crhy.2014.04.004. https://comptes-rendus.academie-sciences.fr/physique/articles/10.1016/j.crhy.2014.04.004/
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