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The effect of toroidicity on reversed field pinch dynamics

机译:环形性对反向场收缩动力学的影响

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摘要

The influence of the curvature of the imposed magnetic field on reversed field pinch dynamics is investigated by comparing the flow of a magnetofluid in a torus with aspect ratio 1.83, with the flow in a periodic cylinder. It is found that an axisymmetric toroidal mode is always present in the toroidal, but absent in the cylindrical configuration. In particular, in contrast to the cylinder, the toroidal case presents a double poloidal recirculation cell with a shear localized at the plasma edge. Quasi-single-helicity states are found to be more persistent in toroidal than in periodic cylinder geometry.
机译:通过将纵横比为1.83的圆环中的磁流体流与周期性圆柱体中的磁流进行比较,研究了施加磁场的曲率对反向磁场收缩动力学的影响。已经发现,轴对称的环形模式总是存在于环形中,而在圆柱形结构中则不存在。特别地,与圆柱体相反,环形壳体具有双倍体再循环室,其剪切力位于等离子体边缘。发现准单螺旋状态在环形中比在周期性圆柱几何中更持久。

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