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首页> 外文期刊>Nuclear fusion >COMPARISON OF TOKAMAK AXISYMMETRIC MODE GROWTH RATES FROM LINEAR MHD AND EQUILIBRIUM EVOLUTION APPROACHES
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COMPARISON OF TOKAMAK AXISYMMETRIC MODE GROWTH RATES FROM LINEAR MHD AND EQUILIBRIUM EVOLUTION APPROACHES

机译:线性MHD和平衡演化方法比较托卡马克轴对称模式的增长率。

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摘要

Linear magnetohydrodynamic (MHD) and equilibrium evolution approaches describe the linear and non-linear axisymmetric displacement dynamics of free boundary plasma equilibrium configurations surrounded by conductors in an external magnetic field. A comparison of the two different approaches was made using DIII-D-like free boundary equilibria. Good agreement was found for up-down symmetric configurations. However, a considerable difference in growth rates is found for up-down asymmetric equilibria. The difference can be explained by taking into account surface current perturbations in the MHD model. Common and specific features of the two approaches are discussed.
机译:线性磁流体动力学(MHD)和平衡演化方法描述了外部磁场中导体围绕的自由边界等离子体平衡构型的线性和非线性轴对称位移动力学。使用类DIII-D的自由边界平衡对两种不同方法进行了比较。发现上下对称配置具有良好的一致性。但是,对于上下不对称平衡,发现增长率存在显着差异。可以通过考虑MHD模型中的表面电流扰动来解释差异。讨论了两种方法的共同特征和特定特征。

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