Publikationsrepositorium - Helmholtz-Zentrum Dresden-Rossendorf
1 PublikationCurrent-driven flow instabilities in large-scale liquid metal batteries, and how to tame them
Weber, N.; Galindo, V.; Stefani, F.; Weier, T.
Abstract
The use of liquid metal batteries is considered as one promising option for electric grid stabilisation. 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.
Keywords: Tayler instability; liquid metal battery; simulation; OpenFOAM
-
Journal of Power Sources 265(2014), 166-173
DOI: 10.1016/j.jpowsour.2014.03.055
Cited 67 times in Scopus
Permalink: https://www.hzdr.de/publications/Publ-19433
Jahre: 2023 2022 2021 2020 2019 2018 2017 2016 2015