FusionPapers
図版検索トレンドwiki日本の研究
© 2026 FUSIONPAPERS
About法務情報
トップに戻る

Shear flow generation due to electromagnetic instabilities

Masahiro Wakatani, Masahiko Sato, Naoaki Miyato, Satoshi Hamaguchi2003年被引用 3Nuclear FusionIF 3出版社

Shear flow is the most important ingredient governing nonlinear behaviour of many types of plasma instability. Electromagnetic effects on shear flow generation have been studied for an electromagnetic drift wave called resistive drift-Alfvén mode (RDAM) and a global MHD mode called resistive wall mode (RWM). For RDAM it is found that the generated shear flow stabilizes the dominant modes; however, other modes are destabilized. For RWM Maxwell stress due to magnetic fluctuations has a tendency to suppress the poloidal flow near the plasma surface, which gives almost the same saturation level for different initial poloidal flows, since the shear flow stabilization disappears.

日本語訳

せん断流は、多くのタイプのプラズマ不安定性の非線形挙動を支配する最も重要な要素である。せん断流生成に対する電磁効果は、抵抗性ドリフト・アルフヴェンモード(RDAM)と呼ばれる電磁ドリフト波と、抵抗性壁モード(RWM)と呼ばれる大域的MHDモードについて研究されてきた。RDAMについては、生成されたせん断流が支配的なモードを安定化することが見出されているが、一方で他のモードは不安定化される。RWMについては、磁気揺動によるマクスウェル応力がプラズマ表面近傍のポロイダル流を抑制する傾向があり、せん断流安定化が消失するため、異なる初期ポロイダル流に対してほぼ同じ飽和レベルが得られる。

この論文にはまだAI要約がありません。

関連論文

Nonlinear behaviour of resistive drift-Alfvén instabilities in a magnetized cylindrical plasma

2002Plasma Physics and Controlled Fusion

Parallel flow driven instability due to toroidal return flow in high-confinement mode plasmas

2019Nuclear Fusion

Electromagnetic effects in the stabilization of turbulence by sheared flow

2014Plasma Physics and Controlled Fusion

Ideal and resistive magnetohydrodynamic instabilities in cylindrical geometry with a sheared flow along the axis

2017Plasma Physics and Controlled Fusion

Sheared flow generation and mode suppression in a magnetized linear cylindrical plasma

2008Plasma Physics and Controlled Fusion

Influence of shear flows on dynamic evolutions of double tearing modes

2020Nuclear Fusion

Electromagnetic turbulence in EAST plasmas with internal transport barrier

2026Nuclear Fusion

Modelling and analytic studies of sheared flow effects on tearing modes

2015Nuclear Fusion

Resistive drift-Alfvén instability in tokamak edge plasmas

2002Plasma Physics and Controlled Fusion

Shear-induced Reynolds stress at the edge of L-mode tokamak plasmas

2012Nuclear Fusion