The nature of interfacial instabilities in liquid metal batteries in a vertical magnetic field
The nature of interfacial instabilities in liquid metal batteries in a vertical magnetic field
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垂直磁场中液态金属电池界面不稳定性的本质
DOI：
10.1209/0295-5075/121/44001
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发表时间：
2018
期刊：
影响因子：
--
通讯作者：
S. Molokov
中科院分区：
文献类型：
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作者：
S. Molokov
研究了垂直磁场作用下液态金属电池的不稳定性。电池由两个液态金属层组成，与集热器相连，中间有一层电解质。水平面上的封闭几何已被半平面取代，以便更好地了解问题。与铝还原电池一样，不稳定性是在电池的电绝缘侧壁处产生的。得到了行波解，表明不稳定存在快、慢两种模式。这两种模式中的任何一种都可能是最不稳定的，这取决于各种参数的值，其中最重要的是众所周知的不稳定性参数β和电解质的密度。对于电解液密度的中间范围，中型电池可以预期是稳定的。
The nature of instabilities in liquid metal batteries in the presence of a vertical magnetic field has been studied. The battery consists of two liquid metal layers, connected to the collectors, and a layer with an electrolyte inbetween. The closed geometry in the horizontal plane has been replaced by a half-plane to get a better insight into the problem. As in aluminium reduction cells the instability is generated at the electrically insulating sidewall of the battery. A travelling-wave solution has been obtained, which shows that there are two modes of the instability, fast and slow. Either of these modes may be most unstable depending on the values of various parameters, the most important of which are the well-known parameter of the instability, β, and the density of the electrolyte. For the intermediate range of the electrolyte density the medium-size batteries may be expected to be stable.