The effect of local toroidal flow (LTF) on double‐tearing modes (DTMs) is investigated in cylindrical geometry using the reduced magnetohydrodynamics (RMHD) model. The results indicate that the LTF between the two rational surfaces is the dominant suppression effect on DTMs. The suppression effect is enhanced with the flow width increasing, and the DTMs become more stable with the increase of the shear of the LTF between the two rational surfaces. So, in the reversed shear magnetic field configuration, the local flow is driven between the two rational surfaces, which can effectively suppress the development of DTMs and maintain the high‐performance state.

中文翻译：

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局部环形流动对圆柱几何双撕裂模式的影响

使用减少的磁流体动力学（RMHD）模型，在圆柱几何形状中研究了局部环形流动（LTF）对双撕裂模式（DTM）的影响。结果表明，两个有理表面之间的LTF是对DTM的主要抑制作用。随着流动宽度的增加，抑制效果增强，并且随着两个有理面之间的LTF剪切力的增加，DTM变得更加稳定。因此，在反向剪切磁场配置中，在两个有理表面之间驱动局部流动，这可以有效地抑制DTM的发展并保持高性能状态。