期刊
JOURNAL OF POWER SOURCES
卷 265, 期 -, 页码 166-173出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2014.03.055
关键词
Liquid metal batteries; Magnetohydrodynamics; Flow instabilities; Tayler instability
资金
- Helmholtz-Gemeinschaft Deutscher Forschungszentren (HGF)
- Helmholtz Alliance Liquid metal technologies (LIM-TECH)
The use of liquid metal batteries is considered as one promising option for electric grid stabilization. While large versions of such batteries are preferred in view of the economies of scale, they are susceptible to various magnetohydrodynamic instabilities which imply a risk of short-circuiting the battery due to the triggered fluid flow. Here we focus on the current driven Tayler instability and give critical electrical currents for its onset as well as numerical estimates for the appearing flow structures and speeds. Scaling laws for different materials, battery sizes and geometries are found. We further discuss and compare various means for preventing the instability. (c) 2014 Elsevier B.V. All rights reserved.
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