# Levitated liquid droplets in AC and DC magnetic field

Bojarevics, Valdis, Easter, S., Roy, A. and Pericleous, Koulis A.
(2009)
*Levitated liquid droplets in AC and DC magnetic field.*
In: Lee, Peter D., Mitchell, Alec and Williamson, Rod, (eds.)
International Symposium on Liquid Metal Processing and Casting - LMPC 2009.
The Minerals, Metals & Materials Society, Warrendale, Pennsylvania, USA, pp. 319-326.
ISBN 978-0-87339-743-8

## Abstract

Electromagnetic levitation of liquid metal droplets can be used to measure the properties of highly reactive liquid materials. Two independent numerical models, the commercial COMSOL and the spectral-collocation based free surface code SPHINX, have been applied to solve the transient electromagnetic, fluid flow and thermodynamic equations, which describe the levitated liquid motion and heating processes. The SPHINX model incorporates free surface deformation to accurately model the oscillations that result from the interaction between the electromagnetic and gravity forces, temperature dependent surface tension, magnetically controlled turbulent momentum transport. The models are adapted to incorporate periodic laser heating at the top of the droplet, which is used to measure the thermal conductivity of the material. Novel effects in the levitated droplet of magnetically damped turbulence and nonlinear growth of velocities in high DC magnetic field are analysed.

Item Type: | Book Section |
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Additional Information: | This paper forms part of the Proceedings from the International Symposium on Liquid Metal Processing and Casting - LMPC 2009, held 20-23 September 2009, in Santa Fe, New Mexico, USA. The Proceedings are available for purchase on CD ROM format from the publisher. |

Uncontrolled Keywords: | magnetic levitation, material properties, heat transfer, MHD flow |

Subjects: | T Technology > TS Manufactures T Technology > TN Mining engineering. Metallurgy Q Science > QA Mathematics |

Pre-2014 Departments: | School of Computing & Mathematical Sciences School of Computing & Mathematical Sciences > Centre for Numerical Modelling & Process Analysis School of Computing & Mathematical Sciences > Centre for Numerical Modelling & Process Analysis > Computational Science & Engineering Group School of Computing & Mathematical Sciences > Department of Computer Systems Technology School of Computing & Mathematical Sciences > Department of Mathematical Sciences |

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Last Modified: | 14 Oct 2016 09:04 |

URI: | http://gala.gre.ac.uk/id/eprint/1490 |

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