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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

Full electromagnetic Vlasov code simulation of the Kelvin.Helmholtz instability

http://hdl.handle.net/2237/14151
http://hdl.handle.net/2237/14151
95e782b9-2a5e-4dbd-be88-eed7d43db169
名前 / ファイル ライセンス アクション
PHYSICS_OF_PLASMAS_17_5_052311.pdf PHYSICS_OF_PLASMAS_17_5_052311.pdf (678.3 kB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2010-09-16
タイトル
タイトル Full electromagnetic Vlasov code simulation of the Kelvin.Helmholtz instability
言語 en
著者 Umeda, Takayuki

× Umeda, Takayuki

WEKO 38734

en Umeda, Takayuki

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Miwa, Jun-ichiro

× Miwa, Jun-ichiro

WEKO 38735

en Miwa, Jun-ichiro

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Matsumoto, Yosuke

× Matsumoto, Yosuke

WEKO 38736

en Matsumoto, Yosuke

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Nakamura, Takuma K. M.

× Nakamura, Takuma K. M.

WEKO 38737

en Nakamura, Takuma K. M.

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Togano, Kentaro

× Togano, Kentaro

WEKO 38738

en Togano, Kentaro

Search repository
Fukazawa, Keiichiro

× Fukazawa, Keiichiro

WEKO 38739

en Fukazawa, Keiichiro

Search repository
Shinohara, Iku

× Shinohara, Iku

WEKO 38740

en Shinohara, Iku

Search repository
アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
権利
言語 en
権利情報 Copyright (2010) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.
抄録
内容記述 Recent advancement in numerical techniques for Vlasov simulations and their application to cross-scale coupling in the plasma universe are discussed. Magnetohydrodynamic (MHD) simulations are now widely used for numerical modeling of global and macroscopic phenomena. In the framework of the MHD approximation, however, diffusion coefficients such as resistivity and adiabatic index are given from empirical models. Thus there are recent attempts to understand first-principle kinetic processes in macroscopic phenomena, such as magnetic reconnection and the Kelvin–Helmholtz (KH) instability via full kinetic particle-in-cell and Vlasov codes. In the present study, a benchmark test for a new four-dimensional full electromagnetic Vlasov code is performed. First, the computational speed of the Vlasov code is measured and a linear performance scaling is obtained on a massively parallel supercomputer with more than 12 000 cores. Second, a first-principle Vlasov simulation of the KH instability is performed in order to evaluate current status of numerical techniques for Vlasov simulations. The KH instability is usually adopted as a benchmark test problem for guiding-center Vlasov codes, in which a cyclotron motion of charged particles is neglected. There is not any full electromagnetic Vlasov simulation of the KH instability; this is because it is difficult to follow E X B drift motion accurately without approximations. The present first-principle Vlasov simulation has successfully represented the formation of KH vortices and its secondary instability. These results suggest that Vlasov code simulations would be a powerful approach for studies of cross-scale coupling on future Peta-scale supercomputers.
言語 en
内容記述タイプ Abstract
出版者
出版者 American Institute of Physics
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
出版タイプ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
DOI
関連タイプ isVersionOf
識別子タイプ DOI
関連識別子 https://doi.org/10.1063/1.3422547
ISSN
収録物識別子タイプ PISSN
収録物識別子 1070-664X
書誌情報 en : PHYSICS OF PLASMAS

巻 17, 号 5, p. 052311-052311, 発行日 2010-05
フォーマット
application/pdf
著者版フラグ
値 publisher
URI
識別子 http://hdl.handle.net/2237/14151
識別子タイプ HDL
URI
識別子 http://dx.doi.org/10.1063/1.3422547
識別子タイプ DOI
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