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Limit cycle oscillation or one-step L–H transition triggered by the outer-well E  ×  B flow shear originating from the scrape-off-layer

J.Y. Kim, H.S. Han, L. Jung2019年被引用 2Nuclear FusionIF 3出版社

Based on an approximate modeling of scrape-off-layer (SOL) dynamics and edge turbulence, it is shown that a new type of limit cycle oscillation (LCO) or one-step L–H transition can be triggered from the outer-well E  ×  B flow shear originating from the SOL region. From its close relevance to SOL properties, this model appears to provide a possible explanation of the L–H threshold power dependence on magnetic or divertor geometry.

日本語訳

スクレイプオフ層(SOL)ダイナミクスと周辺乱流の近似モデリングに基づき、新しいタイプのリミットサイクル振動(LCO)または一段階L–H遷移が、SOL領域に起源を持つ外側ウェルのE  ×  Bフローシアーによって引き起こされ得ることが示される。このモデルは、SOL特性との密接な関連性から、磁気またはダイバータ幾何形状に対するL–H閾値パワー依存性の可能な説明を提供するように思われる。

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Scrape-off layerL-H transitionSTEPFlow shear
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