论文标题
在3D模拟的磁反转模拟中，双极和大厅对涡度的影响的影响
Influence of ambipolar and Hall effects on vorticity in 3D simulations of magneto-convection
论文作者
论文摘要
本文介绍了对太阳能磁偶联的3D模拟分析的结果，其中包括双极扩散的联合作用和霍尔效应。比较了三个模拟运行：一个包括双极扩散和霍尔效应；一个仅包括双极扩散；一个没有这两个效果中的任何一个。磁场通过湍流局部发电机的作用从初始场到饱和水平扩增。在每种情况下，我们研究了局部发电机达到饱和度状态后的2个小时的模拟太阳能时间。我们分析了负责垂直或水平扰动运输的磁场波动的涡度，磁场波动的功率光谱和磁性po弹的不同组件的功率谱。我们的初步结果表明，双极扩散会在上色层上层层中大幅降低涡度，并且它消散了涡流扰动，将它们转化为热能。大厅效应以相反的方式起作用，强烈增强了涡度。当包括大厅效应时，模拟中的磁场平均会产生更垂直和寿命长的磁管状结构。我们追踪一个单个磁性结构，以研究其进化模式和磁场强度，以及它们与霍尔效应的可能关系。
This paper presents the results of the analysis of 3D simulations of solar magneto-convection that include the joint action of the ambipolar diffusion and the Hall effect. Three simulation-runs are compared: one including both ambipolar diffusion and Hall effect; one including only ambipolar diffusion; and one without any of these two effects. The magnetic field is amplified from initial field to saturation level by the action of turbulent local dynamo. In each of these cases, we study 2 hours of simulated solar time after the local dynamo reaches the saturation regime. We analyze the power spectra of vorticity, of magnetic field fluctuations and of the different components of the magnetic Poynting flux responsible for the transport of vertical or horizontal perturbations. Our preliminary results show that the ambipolar diffusion produces a strong reduction of vorticity in the upper chromospheric layers and that it dissipates the vortical perturbations converting them into thermal energy. The Hall effect acts in the opposite way, strongly enhancing the vorticity. When the Hall effect is included, the magnetic field in the simulations becomes, on average, more vertical and long-lived flux tube-like structures are produced. We trace a single magnetic structure to study its evolution pattern and the magnetic field intensification, and their possible relation to the Hall effect.
