[Simulations cinétiques de la turbulence dans les plasmas de fusion]
La turbulence dans un plasma magnétisé faiblement collisionnel est décrite par un modèle gyrocinétique à 5 dimensions dans l'espace des phases, ce qui conduit à des différences notables avec la turbulence en dynamique des fluides neutres, qui est usuellement décrite dans un espace à 3 dimensions. Les progrès récents en matière de calculateurs et de méthodes numériques ont permis de réaliser des simulations directes de plasmas turbulents en géométrie toroidale dans des conditions réalistes. Ces outils numériques sont désormais essentiels pour étudier le transport turbulent dans les plasmas de fusion. Cette revue synthétise les progrès réalisés dans le domaine des simulations cinétiques de plasmas turbulents, avec un accent particulier sur les modèles numériques et les résultats de physique obtenus avec les modèles gyrocinétiques.
In contrast to neutral fluid turbulence described in three-dimensional (3D) configuration space, collisionless magnetised plasma turbulence has been studied using the gyrokinetic model, which is a reduced kinetic model of a plasma in 5D phase space. Recent advances in computer technology and simulation models enabled a direct numerical simulation of plasma turbulence in a toroidal configuration with experimentally relevant parameters. Such kinetic simulations have been established as an essential tool for studying turbulent transport in a fusion plasma. This overview summarises progress in kinetic simulations of turbulent fusion plasmas focusing on physical and numerical models and physical findings obtained from 5D gyrokinetic simulations.
Mot clés : Fusion de plasmas, Turbulence dans les plasmas de fusion
Yasuhiro Idomura 1 ; Tomo-Hiko Watanabe 2 ; Hideo Sugama 2
@article{CRPHYS_2006__7_6_650_0, author = {Yasuhiro Idomura and Tomo-Hiko Watanabe and Hideo Sugama}, title = {Kinetic simulations of turbulent fusion plasmas}, journal = {Comptes Rendus. Physique}, pages = {650--669}, publisher = {Elsevier}, volume = {7}, number = {6}, year = {2006}, doi = {10.1016/j.crhy.2006.06.007}, language = {en}, }
Yasuhiro Idomura; Tomo-Hiko Watanabe; Hideo Sugama. Kinetic simulations of turbulent fusion plasmas. Comptes Rendus. Physique, Volume 7 (2006) no. 6, pp. 650-669. doi : 10.1016/j.crhy.2006.06.007. https://comptes-rendus.academie-sciences.fr/physique/articles/10.1016/j.crhy.2006.06.007/
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