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Synergy of turbulent and neoclassical transport through poloidal convective cells
https://repo.qst.go.jp/records/76567
https://repo.qst.go.jp/records/765670fa055e2-1de0-40af-87a2-11fd6b9f2d6d
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2019-08-26 | |||||
| タイトル | ||||||
| タイトル | Synergy of turbulent and neoclassical transport through poloidal convective cells | |||||
| 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 | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
Asahi, Yuuichi
× Asahi, Yuuichi× Grandgirard, Virginie× Sarazin, Yanick× Donnel, Peter× Garbet, Xavier× Idomura, Yasuhiro× Guilhem, Dif-Pradalier× Latu, Guillaume× Asahi, Yuuichi |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | The role of poloidal convective cells—i.e. low frequency axisymmetric modes of the electric potential—on transport processes is studied with the full-F gyrokinetic code GYSELA. In order to understand the impact of convective cells, we apply a numerical filter to convective cells and compare the simulation results with and without the filter. The energy flux driven by the magnetic drifts (due to the curvature of the magnetic field lines and to the gradient of the magnetic field intensity ∇B) Q_i^D turns out to be reduced by a factor of about 2 once the numerical filter is applied. A careful analysis reveals that the frequency spectrum of the convective cells is well-correlated with that of the turbulent Reynolds stress tensor, giving credit to their turbulence driven origin. The impact of convective cells on Q_i^D can be interpreted as a synergy between turbulence and neoclassical dynamics. |
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| 書誌情報 |
Plasma Physics and Controlled Fusion 巻 61, 号 6, p. 065015, 発行日 2019-08 |
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| 出版者 | ||||||
| 出版者 | IOP Publishing | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0741-3335 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1088/1361-6587/ab0972 | |||||
| 関連サイト | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | https://iopscience.iop.org/article/10.1088/1361-6587/ab0972 | |||||
