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Numerical modelling of error field penetration

Q. Yu, S. Günter, Y. Kikuchi, K.H. Finken2008年被引用 74Nuclear FusionIF 3出版社

Error field (or externally applied helical field) penetration is studied numerically based on the two fluids equations. It is shown that there is a minimum in the required field amplitude when the applied helical field frequency is the same as the mode frequency being determined by both the background equilibrium plasma rotation and the diamagnetic drift. The mode penetration threshold significantly increases as the field frequency deviates from the mode frequency and can become asymmetric on the two sides of the minimum due to parallel heat transport. After mode penetration the nonlinear saturated island width is found to be smaller for a larger electron diamagnetic drift frequency.

日本語訳

誤差磁場(または外部印加螺旋磁場)の貫入を、二流体方程式に基づいて数値的に研究した。印加螺旋磁場の周波数が、背景の平衡プラズマ回転と反磁性ドリフトの両方によって決定されるモード周波数と一致するとき、必要な磁場振幅に最小値が存在することが示される。モード貫入閾値は、磁場周波数がモード周波数からずれるにつれて有意に増大し、平行熱輸送によりその最小値の両側で非対称となり得る。モード貫入後、非線形飽和磁気島幅は、電子反磁性ドリフト周波数が大きいほど小さくなることが見出される。

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Error field
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