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1D fluid model of plasma profiles in the LHD divertor leg
http://hdl.handle.net/10655/8949
http://hdl.handle.net/10655/8949d1eb4754-03af-4429-b13f-c2c50fda7289
名前 / ファイル | ライセンス | アクション |
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jpfrs2009_08-0455-1.pdf (126.4 kB)
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Item type | 学術雑誌論文 / Journal Article_02(1) | |||||
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公開日 | 2012-11-20 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | 1D fluid model of plasma profiles in the LHD divertor leg | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | LHD | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | divertor | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | modeling | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | neutral | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | impurity | |||||
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 |
KAWAMURA, Gakushi
× KAWAMURA, Gakushi× TOMITA, Yukihiro× KOBAYASHI, Masahiro× TSKHAKAYA, David |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | One dimensional plasma model of the divertor leg in Large Helical Device is presented. The plasma is described by stationary fluid equations for electron and ion with particle source by ionization and momentum sink by charge exchange with neutrals. Also a simple model of neutral atoms and radiative cooling by impurities are included. This model is intended to be employed in an integrated simulation where an equilibrium of the upstream plasma and plasma-surface interactions at the divertor plate are solved in different numerical codes separately. From the computational point of view, the numerical code solving the fluid equations for the divertor leg is developed for 1D flux tube where the boundary conditions of both ends are specified. The calculation time is much less than 0.1 seconds and sufficiently fast to use in future integrated simulations. Solutions for typical plasma parameters are shown in the paper. In the results, a density peaking near the wall was observed for the plasma of high density. The peaking is caused by the ion heat conduction and the collisional presheath and its sharpness increases for higher density. Also solutions for different impurity density profiles were obtained and reduction of the electron energy flux and temperature were observed. However, their effects were small and qualitative changes were not observed. |
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書誌情報 |
en : Journal of Plasma and Fusion Research SERIES 巻 Vol.8, p. pp. 455-459, 発行日 2009-09-01 |
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出版者 | ||||||
出版者 | プラズマ・核融合学会 |