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Full magnetohydrodynamic simulation of the tilting instability in a field-reversed configuration
http://hdl.handle.net/10655/1305
http://hdl.handle.net/10655/1305f311d409-266e-417e-9a00-bbef4f8e54ed
名前 / ファイル | ライセンス | アクション |
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2335 PFB000581.pdf (1.1 MB)
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VoR_Phy.Flui.B1_581 (1.1 MB)
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Item type | 学術雑誌論文 / Journal Article_02(1) | |||||
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公開日 | 2009-05-08 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Full magnetohydrodynamic simulation of the tilting instability in a field-reversed configuration | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者 |
Horiuchi, Ritoku
× Horiuchi, Ritoku× Sato, Tetsuya |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Nonlinear evolution of the tilting instability in a field-reversed configuration (FRC) is investigated by means of a three-dimensional full magnetohydrodynamic simulation. Three types of plasma model are considered, i.e., case (a) where the plasma is confined by a uniform external field, case (b) where the plasma is confined by a mirror external field, and case (c) where the plasma rotates around the major axis. For the prolate FRC the internal tilt mode cannot stay at a low amplitude but keeps growing irrespective of whether the mirror field exists or not. When the initial configuration is substantially deformed, the instability triggers an external mode at the plasma?vacuum boundary because of the pressure imbalance. The outgoing flow driven by the external mode tears the plasma into two pieces, and the torn pieces move away toward the axial edges. The growth time is nearly equal to the transit time for the Alfv?n wave to propagate over the plasma length. When the plasma is driven to spin with the Mach number of M=1.5, the growth rate is halved compared to the nonrotating case. The spin stabilization is expected to be complete for M>2.5. It is also found that the oblate FRC plasma is linearly unstable against the external tilt mode. | |||||
書誌情報 |
en : Physics of Fluids B 巻 Vol.1, 号 No.3, p. pp.581-590, 発行日 1989-03-01 |
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出版者 | ||||||
出版者 | American Institute of Physics | |||||
DOI | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1063/1.859118 | |||||
関連サイト | ||||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1063/1.859118 | |||||
関連名称 | Publisher version | |||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 |