Using Lorentz forces to control the distribution of bubbles in a vertical tube filled with liquid metal

verfasst von: S. Heitkam, S. Tschisgale, B. Krull, T. Wetzel, E. Baake, J. Fröhlich
Abstract: In this work, a method to increase the residence time of bubbles in tubes or pipes filled with liquid metal is investigated. Imposing a horizontal electric current and a perpendicular horizontal magnetic field generates an upward-directed Lorentz force. This force can counteract gravity and cause floating of bubbles. Even with homogeneous electric fields these float in the mean but fluctuate randomly within the swarm due to mutual interactions. In the present case the cylindrical shape of the container furthermore creates inhomogeneous electric currents and an inhomogeneous force distribution resulting in a macroscopic convection pattern stirring the bubbles and further homogenising the spatial distribution of the bubbles.
Organisationseinheit(en): Institut für Elektroprozesstechnik
Externe Organisation(en): Technische Universität Dresden
Karlsruher Institut für Technologie (KIT)
Typ: Aufsatz in Konferenzband
Publikationsdatum: 03.08.2017
Publikationsstatus: Veröffentlicht
Peer-reviewed: Ja
ASJC Scopus Sachgebiete: Werkstoffwissenschaften (insg.), Ingenieurwesen (insg.)
Elektronische Version(en): https://doi.org/10.1088/1757-899X/228/1/012008 (Zugang: Offen)

BibTeX

@inproceedings{76dc95d45d4f4b708db5b2567e2fb5bf,
title = "Using Lorentz forces to control the distribution of bubbles in a vertical tube filled with liquid metal",
abstract = "In this work, a method to increase the residence time of bubbles in tubes or pipes filled with liquid metal is investigated. Imposing a horizontal electric current and a perpendicular horizontal magnetic field generates an upward-directed Lorentz force. This force can counteract gravity and cause floating of bubbles. Even with homogeneous electric fields these float in the mean but fluctuate randomly within the swarm due to mutual interactions. In the present case the cylindrical shape of the container furthermore creates inhomogeneous electric currents and an inhomogeneous force distribution resulting in a macroscopic convection pattern stirring the bubbles and further homogenising the spatial distribution of the bubbles.",
author = "S. Heitkam and S. Tschisgale and B. Krull and T. Wetzel and E. Baake and J. Fr{\"o}hlich",
note = "Funding information: The support of the Helmholtz Alliance LIMTECH via the project A5 and a Seed Grant in 2015, as well as the support of the German Research Foundation (HE 7529/1-1) is gratefully acknowledged. Computation time was provided by ZIH at TU Dresden.; Final LIMTECH Colloquium and International Symposium on Liquid Metal Technologies, LIMTECH 2017 ; Conference date: 19-09-2017 Through 20-09-2017",
year = "2017",
month = aug,
day = "3",
doi = "10.1088/1757-899X/228/1/012008",
language = "English",
series = "IOP Conference Series: Materials Science and Engineering",
publisher = "IOP Publishing Ltd.",
booktitle = "Final LIMTECH Colloquium and International Symposium on Liquid Metal Technologies 19–20 September 2017, Dresden, Germany",
}