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Kelvin-Helmholtz instability as a possible cause of edge localized modes

H.R. Strauss1992年被引用 4Nuclear FusionIF 3出版社

Edge localized modes may be a Kelvin-Helmholtz instability caused by the sheared rotation of H-mode plasmas. The Kelvin-Helmholtz instability is stabilized by coupling to Alfven waves. There is a critical velocity gradient, of the order of the Alfven velocity divided by the magnetic shear length. This is verified in a numerical simulation. The critical velocity shear is consistent with experiment. A nonlinear simulation shows how the Kelvin-Helmholtz mode can cause oscillations of the velocity profile

日本語訳

周辺局在モードは、Hモードプラズマのシア回転によって引き起こされるケルビン・ヘルムホルツ不安定性である可能性がある。ケルビン・ヘルムホルツ不安定性は、アルフヴェン波との結合によって安定化される。臨界速度勾配が存在し、その大きさはアルフヴェン速度を磁気シア長で割った値のオーダーである。これは数値シミュレーションで検証されている。臨界速度シアは実験と一致する。非線形シミュレーションは、ケルビン・ヘルムホルツモードがどのように速度分布の振動を引き起こし得るかを示している。

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Edge localized modeKelvin-Helmholtz instability
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