电导率对液态金属电池及相关双层系统界面波的影响
Conductivity influence on interfacial waves in liquid metal batteries and related two-layer systems
摘要：
液态金属电池中的流体流动可以通过多种效应产生。我们首先简要概述了不同的驱动机制，然后解决特定的问题，在三层系统中的金属焊盘的作用不稳定性。我们专注于细胞中的电导率分布的作用，同时注意到，对于较小的细胞，也应该考虑界面张力。在此基础上，给出了在两层液态金属系统中界面波激发的数值计算结果，该系统具有承受界面法向电流的间隙。从文献中最近的结果，我们发现，磁阻尼起着决定性的作用，强垂直磁场。此外，电场的边界条件强烈地影响临界电流和生长速率。
英文摘要：
Fluid flows in liquid metal batteries can be generated by a number of effects. We start with a short overview of different driving mechanisms and then address questions specific to the metal pad role instabilities in three-layer systems. We focus on the role of the conductivity distribution in the cell, noting at the same time that interfacial tension should be considered as well for smaller cells. Following this discussion, numerical results on the excitation of interfacial waves in two-layer liquid metal systems with miscibility gaps bearing an interface normal electric current are presented. Confirming recent results from the literature, we find that magnetic damping plays a decisive role for strong vertical magnetic fields. In addition, boundary conditions for the electric field strongly influence critical currents and growth rates.
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