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Extension of Global Gyrokinetic Code for Tokamak Edge Turbulence Simulation
https://repo.qst.go.jp/records/2000655
https://repo.qst.go.jp/records/2000655ef6852ac-d964-4e67-a514-8cb01e7b0570
| アイテムタイプ | 学術雑誌論文 / Journal Article(1) | |||||||||||
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| 公開日 | 2024-09-02 | |||||||||||
| タイトル | ||||||||||||
| タイトル | Extension of Global Gyrokinetic Code for Tokamak Edge Turbulence Simulation | |||||||||||
| 言語 | en | |||||||||||
| 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 |
Okuda Shuhei
× Okuda Shuhei
× Seto Haruki
× Imadera Kenji
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| 抄録 | ||||||||||||
| 内容記述タイプ | Abstract | |||||||||||
| 内容記述 | A field-aligned coordinate system using a shifted metric technique has been implemented to a global gyrokinetic code GKNET. This coordinate system allows for simulations with lower resolution in the direction along the magnetic field line, which is especially effective in the outer core regions with higher q values. Realistic tokamak geometries, including up-down asymmetric equilibria, have also been implemented by using a newly developed interface code that connects GKNET and a free-boundary 2D Grad-Shafranov equation solver. This is essential for tokamak edge simulations, which will be developed in the future. As an application, the nonlinear simulation of the ion temperature gradient (ITG) mode with the JT-60SA ITER-like plasma [M. Nakata et al., Plasma Fusion Res. 9, 1403029 (2014)] has been performed. The result shows that the linear ITG instability with high poloidal modes and resultant zonal flow generation are properly traced. In this case, it is estimated that the number of computational grids can be reduced to 1/94 compared to that of the flux surface coordinate system. | |||||||||||
| 書誌情報 |
Plasma and Fusion Research 巻 18, p. 240340, 発行日 2023-06 |
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| 出版者 | ||||||||||||
| 出版者 | 一般社団法人 プラズマ・核融合学会 | |||||||||||
| ISSN | ||||||||||||
| 収録物識別子タイプ | ISSN | |||||||||||
| 収録物識別子 | 1880-6821 | |||||||||||
| DOI | ||||||||||||
| 識別子タイプ | DOI | |||||||||||
| 関連識別子 | 10.1585/pfr.18.2403040 | |||||||||||
