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  1. F300 宇宙地球環境研究所
  2. F300a 雑誌掲載論文
  3. 学術雑誌

Evaluating gyro-viscosity in the Kelvin-Helmholtz instability by kinetic simulations

http://hdl.handle.net/2237/25177
717cb079-3d0b-406a-b5f0-70add11adb96
名前 / ファイル ライセンス アクション
1_4952632.pdf 1_4952632.pdf ファイル公開:2017/05/27 (1.6 MB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2016-12-09
タイトル
タイトル Evaluating gyro-viscosity in the Kelvin-Helmholtz instability by kinetic simulations
著者 Umeda, Takayuki

× Umeda, Takayuki

WEKO 67926

Umeda, Takayuki

Search repository
Yamauchi, Natsuki

× Yamauchi, Natsuki

WEKO 67927

Yamauchi, Natsuki

Search repository
Wada, Yasutaka

× Wada, Yasutaka

WEKO 67928

Wada, Yasutaka

Search repository
Ueno, Satoshi

× Ueno, Satoshi

WEKO 67929

Ueno, Satoshi

Search repository
権利
権利情報 Copyright 2016 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.23, 2016, p.054506) and may be found at (http://dx.doi.org/10.1063/1.4952632).
抄録
内容記述 In the present paper, the finite-Larmor-radius (gyro-viscous) term [K. V. Roberts and J. B. Taylor, Phys. Rev. Lett. 8, 197–198 (1962)] is evaluated by using a full kinetic Vlasov simulation result of the Kelvin-Helmholtz instability (KHI). The velocity field and the pressure tensor are calculated from the high-resolution data of the velocity distribution functions obtained by the Vlasov simulation, which are used to approximate the Finite-Larmor-Radius (FLR) term according to Roberts and Taylor [Phys. Rev. Lett. 8, 197–198 (1962)]. The direct comparison between the pressure tensor and the FLR term shows an agreement. It is also shown that the anisotropic pressure gradient enhanced the linear growth of the KHI when the inner product between the vorticity of the primary velocity shear layer and the magnetic field is negative, which is consistent with the previous FLR-magnetohydrodynamic simulation result. This result suggests that it is not sufficient for reproducing the kinetic simulation result by fluid simulations to include the FLR term (or the pressure tensor) only in the equation of motion for fluid.
内容記述タイプ Abstract
出版者
出版者 AIP Publishing
言語
言語 eng
資源タイプ
資源タイプresource http://purl.org/coar/resource_type/c_6501
タイプ journal article
ISSN
収録物識別子タイプ ISSN
収録物識別子 1070-664X
書誌情報 Physics of Plasmas

巻 23, p. 054506-054506, 発行日 2016-05-27
著者版フラグ
値 publisher
URI
識別子 http://dx.doi.org/10.1063/1.4952632
識別子タイプ DOI
URI
識別子 http://hdl.handle.net/2237/25177
識別子タイプ HDL
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