Evolution of Aligned States Within Nonlinear Dynamos (dataset)

The Archontis dynamo is a rare example of an MHD dynamo within which forcing drives a dynamo where the flow and magnetic fields are almost perfectly aligned and the energies are approximately equal. In this paper, I expand upon our knowledge of the dynamo by showing that the intermediate steady states of the kinetic and magnetic energies observed by Cameron and Galloway are not a necessary feature of aligned dynamos. Furthermore, I show that the steady state into which the flow and magnetic fields eventually evolve is remarkably robust to the addition of time dependence and asymmetry to the forcing.阿孔蒂斯发电机（Archontis dynamo）是一类罕见的磁流体发电机（Magnetohydrodynamic dynamo, MHD）实例，其驱动机制下，流动与磁场几乎完全对齐，且动能与磁能近似相等。本文进一步深化了对该发电机的研究认知：证明卡梅伦与加洛韦所观测到的动能与磁能中间稳态，并非对齐式磁流体发电机的必要特征。此外，本文还证实，流动与磁场最终演化至的稳态，对驱动项引入的时间依赖性与不对称性具备显著鲁棒性。