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Impact of equilibrium radial electric field on energy lossprocess after pedestal collapse
https://repo.qst.go.jp/records/80140
https://repo.qst.go.jp/records/801405fcb2e67-9071-4eb9-93d9-32db65bf1825
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2020-07-01 | |||||
| タイトル | ||||||
| タイトル | Impact of equilibrium radial electric field on energy lossprocess after pedestal collapse | |||||
| 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 |
Seto, Haruki
× Seto, Haruki× Xu, X.Q.× D. Dudson, Benjamin× Yagi, Masatoshi× Seto, Haruki× Yagi, Masatoshi |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | An impact of the equilibrium radial electric field on energy loss processes after pedestal collapse is numerically investigated using the BOUT++ framework. Using linear stability analysis, the resistive ballooning mode is shown to be stabilized by the radial shear of the equilibrium radial electric field. On the other hand, the energy loss level after the pedestal collapse increases if the equilibrium radial electric field is taken into account. The spatio‐temporal and phase diagram analyses show that the equilibrium radial electric field partially cancels the fluctuation‐driven toroidally axisymmetric radial electric field and weakens the E × B shearing rate after pedestal collapse, weakening the turbulence suppression by vortex shearing. The equilibrium radial electric field therefore increases turbulence intensity in nonlinear cyclic oscillations among pressure gradient, E × B shearing rate, and turbulence intensity, which gives rise to subsequent bursts of turbulent transport and increases the energy loss level. | |||||
| 書誌情報 |
Contributions to Plasma Physics 巻 60, 号 5-6, 発行日 2020-05 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 1521-3986 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1002/ctpp.201900158 | |||||
| 関連サイト | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | https://onlinelibrary.wiley.com/doi/full/10.1002/ctpp.201900158 | |||||
