2024-03-28T23:11:17Z
https://nagoya.repo.nii.ac.jp/oai
oai:nagoya.repo.nii.ac.jp:00030330
2023-01-16T04:23:38Z
879:880:881
Evaluating higher moments in the transverse Kelvin–Helmholtz instability by full kinetic simulation
Umeda, Takayuki
open access
Copyright 2020 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing.The following article appeared in (Physics of Plasmas. v.27, n.3, 2020, p.032112) and may be found at (http://dx.doi.org/10.1063/1.5139442).
Approximated forms of the third and fourth moments of a velocity distribution function are derived by using a perturbed velocity distribution function around a characteristic spatial scale on the gyroradius derived by Thompson [Rep. Prog. Phys. 24, 363–424 (1961)]. Then, they are evaluated by using a two-dimensional full kinetic Vlasov simulation result of the transverse Kelvin–Helmholtz instability. It is shown that the derived form of the fourth moment is in agreement with the one calculated from the distribution function data of the Vlasov simulation. On the other hand, the derived form of the third moment is quite different from the one (i.e., heat flux tensor) calculated from the distribution function data of the Vlasov simulation. The results suggest that the perturbed velocity distribution function of Thompson needs an improvement.
ファイル公開:2021/03/01
AIP Publishing
2020-03
eng
journal article
VoR
http://hdl.handle.net/2237/00032516
https://nagoya.repo.nii.ac.jp/records/30330
https://doi.org/10.1063/1.5139442
1070-664X
Physics of Plasmas
27
3
032112
https://nagoya.repo.nii.ac.jp/record/30330/files/1_5139442.pdf
application/pdf
2.1 MB
2021-03-01