论文标题
恒星发电机的全球模拟
Global simulations of stellar dynamos
论文作者
论文摘要
负责太阳能磁活动的发电机机制仍然是天体物理学中的一个开放问题。提出解释这种现象的不同理论在繁殖太阳磁性的观察性特性方面失败了。因此，在球形外壳中对流发电机的Ab-Initio计算建模结果是解决此问题的最佳选择。在这项工作中，我们回顾了过去几十年来全球模拟中所做的努力。关于平均流量以及平均磁场的发展和维持，我们讨论了不同建模策略之间的一致性和差异点。特别注意使用Eulag-MHD代码执行的隐式大型模拟。
The dynamo mechanism, responsible for the solar magnetic activity, is still an open problem in astrophysics. Different theories proposed to explain such phenomena have failed in reproducing the observational properties of the solar magnetism. Thus, ab-initio computational modeling of the convective dynamo in a spherical shell turns out as the best alternative to tackle this problem. In this work we review the efforts performed in global simulations over the past decades. Regarding the development and sustain of mean-flows, as well as mean magnetic field, we discuss the points of agreement and divergence between the different modeling strategies. Special attention is given to the implicit large-eddy simulations performed with the EULAG-MHD code.
