Flux-loss of buoyant ropes interacting with convective flows
Flux-loss of buoyant ropes interacting with convective flows
复制标题
浮力绳与对流相互作用的通量损失
DOI：
10.1051/0004-6361:20011397
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发表时间：
2001
影响因子：
6.5
通讯作者：
A. Nordlund
中科院分区：
文献类型：
--
作者：
S. Dorch;B. Gudiksen;W. Abbett;A. Nordlund
我们提出了3-d数值磁流体动力学模拟的浮力，扭曲的磁通绳嵌入分层，太阳模型对流区。通量绳被赋予初始扭曲，使得其在上升期间既不扭结也不断裂。此外，它的磁能含量相对于对流的选择，使磁通绳保持其基本的几何形状，而从一个纯粹的垂直上升被对流偏转。模拟表明，磁通量平流远离磁绳的核心，因为它与对流相互作用。因此，结果支持的想法，储存在或附近的太阳对流区底部的环形通量的量目前可能被低估。
We present 3-d numerical magneto-hydrodynamic simulations of a buoyant, twisted magnetic flux rope embedded in a stratied, solar-like model convection zone. The flux rope is given an initial twist such that it neither kinks nor fragments during its ascent. Moreover, its magnetic energy content with respect to convection is chosen so that the flux rope retains its basic geometry while being deflected from a purely vertical ascent by convective flows. The simulations show that magnetic flux is advected away from the core of the flux rope as it interacts with the convection. The results thus support the idea that the amount of toroidal flux stored at or near the bottom of the solar convection zone may currently be underestimated.