Axisymmetric magnetoconvection in a twisted field
Axisymmetric magnetoconvection in a twisted field
复制标题
扭曲场中的轴对称磁对流
DOI：
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发表时间：
1993
影响因子：
3.7
通讯作者：
D. Galloway
中科院分区：
文献类型：
--
作者：
C. Jones;D. Galloway
The process of flux rope formation in a convecting cell is studied. The magnetic field has both a meridional and an azimuthal component, and so corresponds to a twisted field. Convection occurs in this cylindrical cell because of heating from below, and is assumed to take an axisymmetric form. Only the Boussinesq problem is studied here, but both the kinematic and the dynamic regimes are considered. The two cases where the twisted field is due to (a) an imposed flux of vertical current and (b) an imposed flux of vertical vorticity are considered. Strongly twisted ropes can be generated more easily in case (b) than in case (a). We show that convection can produce ropes twisted in the opposite direction from that of the initial field. We also find that solutions can be oscillatory even when linear theory predicts steady solutions.
