Effect of sheared flows on classical and neoclassical tearing modes
Effect of sheared flows on classical and neoclassical tearing modes
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DOI：
10.1088/0029-5515/45/6/015
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发表时间：
2005-05
期刊：
影响因子：
3.3
通讯作者：
D. Chandra;A. Sen;P. Kaw;M. Bora;S. Kruger
中科院分区：
文献类型：
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作者：
D. Chandra;A. Sen;P. Kaw;M. Bora;S. Kruger
通过数值求解一组简化的广义MHD方程，研究了环形剪切平衡流对经典和新经典撕裂模非线性演化的影响。在一般情况下，差分流被发现有一个强大的稳定的影响，导致较低的饱和岛宽度的经典撕裂模式和新古典模式的增长率降低。另一方面，速度剪切被认为是不稳定的贡献。
The influence of toroidal sheared equilibrium flows on the nonlinear evolution of classical and neoclassical tearing modes is studied through numerical solutions of a set of reduced generalized MHD equations that include viscous force effects based on neoclassical closures. In general, differential flow is found to have a strong stabilizing influence leading to lower saturated island widths for the classical tearing mode and reduced growth rates for the neoclassical mode. Velocity shear, on the other hand, is seen to make a destabilizing contribution.