Linear tearing modes calculation for diverted tokamak configurations
Linear tearing modes calculation for diverted tokamak configurations
复制标题
转向托卡马克结构的线性撕裂模式计算
DOI：
10.1063/1.1806477
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发表时间：
2004
影响因子：
2.2
通讯作者：
A. Subbotin
中科院分区：
文献类型：
--
作者：
C. Atanasiu;S. Günter;K. Lackner;A. Moraru;L. Zakharov;A. Subbotin
将势能的表达式写成通量函数的扰动，并进行欧拉极小化，就得到了该扰动下的常微分方程系统。对于偏转构型，磁轴处和无穷远处的摄动通量函数的通常消失边界条件不再适用。提出了一种在等离子体边界处固定扰动通量函数“自然”边界条件的方法；这取代了在无穷远处消失的边界条件。为了从平衡求解器中获得必要的度量系数，引入了在X点处表现出相同奇点的函数，从而用减少的矩数来描述分离矩阵轮廓。
Writing the expression of the potential energy in terms of the perturbation of the flux function, and performing an Euler minimization, one obtains a system of ordinary differential equations in that perturbation. For a diverted configuration, the usual vanishing boundary conditions for the perturbed flux function at the magnetic axis and at infinity can no longer be used. An approach to fix “natural” boundary conditions for the perturbed flux function just at the plasma boundary has been developed; this replaces the vanishing boundary conditions at infinity. To obtain the necessary metric coefficients from an equilibrium solver, a function exhibiting the same singularity at the X point has been introduced, and thus the separatrix contour was described by a reduced number of moments.
影响因子：
2.2
作者：
Sauter, O;LaHaye, RJ;Yoshino, R
通讯作者：
Yoshino, R