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首页> 外文期刊>Computer physics communications >Convolution and iterative methods applied to low-frequency waves in 3D warm configurations
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Convolution and iterative methods applied to low-frequency waves in 3D warm configurations

机译：卷积和迭代方法应用于3D温暖配置中的低频波

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Kinetic effects have been implemented in the three-dimensional full-wave code LEMan. These allow modeling Landau damping as well as the Kinetic Alfvén Wave (KAW). Special attention has been taken on the exact computation of the parallel wave vector as it can have a strong impact on the results. Due to numerical specificities, two techniques have been used depending on the frequency domain under investigation. The damping of global modes like Toroidally-induced Alfvén Eigenmodes (TAE), which is a key issue for future reactors as they can be driven by fast ions, can then be determined. Multiple couplings are shown to lead to an increase of the damping value and thus to a stabilization of the mode. In the Ion Cyclotron Range of Frequencies (ICRF), a Large Helical Device (LHD) configuration has been investigated. For this specific case, the difference between the results obtained with an accurate determination of the parallel wave vector and the approximation k∥=n/R has been shown to be insignificant.
机译：动力学效果已在三维全波代码LEMan中实现。这些允许对Landau阻尼以及动力学AlfvénWave（KAW）进行建模。平行波矢量的精确计算已受到特别关注，因为它可能会对结果产生很大影响。由于数值上的特殊性，根据所研究的频域使用了两种技术。然后，可以确定整体模式的阻尼，例如环型感应Alfvén本征模式（TAE），这是未来反应堆的关键问题，因为它们可以由快速离子驱动。示出了多个耦合导致阻尼值的增加并且因此导致模式的稳定。在离子回旋加速器频率范围（ICRF）中，已经研究了大型螺旋装置（LHD）的配置。对于这种特定情况，已经表明，通过精确确定平行波矢量所获得的结果与近似值k 1 ＝ n / R之间的差异很小。

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