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A nonlinear simulation study of the effect of toroidal rotation on RMP control of ELMs

D. Chandra, A. Sen, A. Thyagaraja2021年被引用 1Nuclear FusionIF 3出版社

We present numerical simulation studies on the combined influence of a resonant magnetic perturbation (RMP) and a sheared toroidal flow on the characteristics of edge localized modes (ELMs). We find that the presence of a sheared flow enhances the stabilising effect of the RMP in a synergistic manner. For a fixed RMP power a comparative study is made of the nature of ELM dynamics for different flow configurations. A counter-current off-axis flow is found to be the most effective in mitigating ELMs by changing their nature from a spiky type-I kind of ELMS to a grassy variety. There is also a concomitant improvement in the over all plasma beta and energy confinement time.

日本語訳

我々は、共鳴磁場摂動(RMP)とシア流の複合的な影響が、周辺局在モード(ELM)の特性に及ぼす効果に関する数値シミュレーション研究を提示する。シア流の存在が、RMPの安定化効果を相乗的に増強することを見出した。固定されたRMPパワーに対して、異なるフロー配位におけるELMダイナミクスの性質に関する比較研究を行った。反対方向のオフアクシスシア流が、スパイク状のタイプI ELMから草状のELMへとその性質を変化させることにより、ELMの緩和に最も効果的であることが明らかになった。さらに、全体的なプラズマベータ値とエネルギー閉じ込め時間の改善も同時に見られた。

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Edge localized modeResonant magnetic perturbationToroidal rotation
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