Collisionless Boltzmann (Vlasov) equation and modeling of self-gravitating systems and plasmas / Boltzmann sans collisions, Vlasov et modélisation des systèmes auto-gravitants et des plasmas

Collection Collisionless Boltzmann (Vlasov) equation and modeling of self-gravitating systems and plasmas / Boltzmann sans collisions, Vlasov et modélisation des systèmes auto-gravitants et des plasmas

Organisateur(s) Colombi, Stéphane ; Devriendt, Julien ; Elskens, Yves ; Taruya, Atsushi ; Triay, Roland

Date(s) 30/10/2017 - 03/11/2017

URL associée http://conferences.cirm-math.fr/1683.html

00:00:00 / 00:00:00

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5D full-$f$ gyrokinetic simulation for ion turbulence and transport barrier in tokamak plasmas

De Kenji Imadera

Gyrokinetic simulation is considered to be an essential tool to study turbulent transport driven by micro-scale instabilities in tokamak plasmas. It is roughly categorized into two approaches; delta-$f$ local and full-$f$ global approaches. In full-$f$ approach, both turbulent transport and profile evolutions are solved self-consistently under the power balance between external heat source/sink. In this talk, we address (A) numerical technique to treat such full-$f$ gyrokinetic Vlasov-Poisson equations [1] and (B) characteristics of global ion-scale turbulence and transport barrier [2]. We also discuss (C) the role of stable modes in collisionless or weakly collisional plasmas [3].

Informations sur la vidéo

Date de captation 02/11/2017
Date de publication 02/11/2017
Institut CIRM
Licence CC BY NC ND
Langue Anglais
Audience Chercheurs
Réalisateur(s) Guillaume Hennenfent
Format MP4

Données de citation

DOI 10.24350/CIRM.V.19239003
Citer cette vidéo Imadera, Kenji (02/11/2017). 5D full-$f$ gyrokinetic simulation for ion turbulence and transport barrier in tokamak plasmas. CIRM. Audiovisual resource. DOI: 10.24350/CIRM.V.19239003
URL https://dx.doi.org/10.24350/CIRM.V.19239003

Domaine(s)

Physique des plasmas

Bibliographie

[1] Obrejan, K., Imadera, K., Li, J., & Kishimoto, Y. (2017). Development of a new zonal flow equation solver by diagonalisation and its application in non-circular cross-section tokamak plasmas. Computer Physics Communications, 216, 8-17 - https://doi.org/10.1016/j.cpc.2017.02.010
[2] Imadera, K., Li, J., & Kishimoto, Y. (2016). ITB formation in gyrokinetic flux-driven ITG turbulence. In 26th IAEA Fusion Energy Conference (TH/P3-3). Kyoto: Kyoto International Conference Center - https://nucleus.iaea.org/sites/fusionportal/Shared%20Documents/FEC%202016/fec2016-preprints/preprint0586.pdf
[3] Hilscher, P.P., Imadera, K., Li, J., & Kishimoto, Y. (2013). The effect of weak collisionality on damped modes and its contribution to linear mode coupling in gyrokinetic simulation. Physics of Plasmas, 20, 082127 - https://doi.org/10.1063/1.4819033

Codes MSC

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