Construction of extended MHD theory for plasma current driven by magnetic helicity injection
| Project/Area Number |
16K05627
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Plasma science
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| Research Institution | Tohoku University |
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Principal Investigator |
Hirota Makoto 東北大学, 流体科学研究所, 准教授 (40432900)
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| Project Period (FY) |
2016-04-01 – 2020-03-31
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| Project Status |
Completed (Fiscal Year 2019)
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| Budget Amount *help |
¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2019: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2018: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2017: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2016: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
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| Keywords | 二流体プラズマ / 数値シミュレーション / 自己組織化 / 拡張電磁流体力学 / 電子慣性 / 磁気ヘリシティ / テイラー緩和 / 磁気リコネクション / プラズマ・核融合 |
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| Outline of Final Research Achievements |
A numerical simulation code is developed for solving the extended magnetohydrodynamic (MHD) equations, which includes two-fluid effects. In particular, for the purpose of simulating the experiments of magnetic helicity injection into plasmas, the appropriate boundary condition is formulated to impose voltages on the conductive wall. This simulation code can estimate self-organized current that is eventually generated through complicated turbulent process followed by magnetic helicity injection. A comparison is made with the MHD theoretical prediction and the two-fluid effects on relaxation are investigated.
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| Academic Significance and Societal Importance of the Research Achievements |
核融合発電炉の実現に向けて、国際プロジェクトITERが進行中であるが、そこで採用されているトカマク方式では放電時間に制限があり、そのままではパルス運転になることが懸念されている。磁気ヘリシティ入射によってプラズマ中に自発的に発生する電流を理論的に予測・制御し、効率的な条件を見つけることができれば、新たな電流駆動方式として将来的な応用が期待される。
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Report
(5 results)
Research Products
(20 results)
