Development of Linearized Collision Operator for Multiple Ion Species in Gyrokinetic Flux-Tube Simulations

Linearized model collision operators for multiple ion species are implemented in a local flux-tube gyrokinetic code. The newly implemented collision operator satisfies the conservation properties of particles, momentum, and energy, as well as the adjointness relations for collisions between differen...

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Bibliographic Details
Published in:Plasma and Fusion Research 2015/05/26, Vol.10, pp.1403058-1403058
Main Authors: NUNAMI, Masanori, NAKATA, Motoki, WATANABE, Tomo-Hiko, SUGAMA, Hideo
Format: Article
Language:English
Subjects:
Collision dynamics
collision operator
Computer simulation
Energy conservation
gyrokinetic simulation
Linearization
Mathematical models
zonal flow
Zonal flow (meteorology)
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Summary:Linearized model collision operators for multiple ion species are implemented in a local flux-tube gyrokinetic code. The newly implemented collision operator satisfies the conservation properties of particles, momentum, and energy, as well as the adjointness relations for collisions between different particle species, which are numerically confirmed by the test simulations. The linear zonal flow response with finite collisionality, is also compared between the new collision operator and the simplified model collision operator.
ISSN:1880-6821
1880-6821
DOI:10.1585/pfr.10.1403058