Reduction of Turbulent Transport with Zonal Flows Enhanced in Helical Systems
書誌事項
- 公開日
- 2008-05-01
- 資源種別
- journal article
- 権利情報
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- ? 2008 The American Physical Society
- 公開者
- The American Physical Society
説明
Gyrokinetic Vlasov simulations of the ion temperature gradient turbulence are performed in order to investigate effects of helical magnetic configurations on turbulent transport and zonal flows. The obtained results confirm the theoretical prediction that helical configurations optimized for reducing neoclassical ripple transport can simultaneously reduce the turbulent transport with enhancing zonal-flow generation. Stationary zonal-flow structures accompanied with transport reduction are clearly identified by the simulation for the neoclassically optimized helical geometry. The generation of the stationary zonal flow explains a physical mechanism for causing the confinement improvement observed in the inward-shifted plasma in the Large Helical Device [O. Motojima et al., Nucl. Fusion 43, 1674 (2003)].
収録刊行物
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- Physical Review Letters
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Physical Review Letters Vol.100 195002-1 - 195002-4-, 2008-05-01
The American Physical Society
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詳細情報 詳細情報について
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- CRID
- 1050845762406207488
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- HANDLE
- 10655/2280
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- 本文言語コード
- en
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- 資料種別
- journal article
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- データソース種別
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- IRDB