Bojarevics, V. ORCID: https://orcid.org/0000-0002-7326-7748, Roy, A. and Pericleous, K.A. ORCID: https://orcid.org/0000-0002-7426-9999 (2010) Magnetic levitation of a large mass of liquid metal. In: Civil-Comp Proceedings. Civil-Comp Press, Stirlingshire, UK, pp. 1-16. ISBN 978-1-905088-39-3 (Book) - 978-1-905088-40-9 (CD-Rom) ISSN 1759-3433 (doi:10.4203/ccp.94.75)

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Abstract

It is well known from experiments and industrial applications of cold crucible melting that an intense AC magnetic field can be used to levitate large volumes of liquid metal in the terrestrial conditions. The levitation confinement mechanism for large volumes of fluid is considerably different from the case of a small droplet where surface tension plays a key role in constraining the liquid outflow at the critical bottom point. The dynamic interaction between the oscillatory motion of the free surface and the effects of turbulent flow is analysed using a unified numerical model which describes the time dependent behaviour of the liquid metal and the magnetic field. The MHD modified k-omega turbulence model is used to describe the mixing and damping properties at smaller scales not resolved by the macro model. The numerical multiphysics simulations suggest that it is possible to levitate a few kilograms of liquid metal in a cold crucible without requiring mechanical support from the container walls. Possible applications to the processing of reactive metals are discussed.

Item Type:	Conference Proceedings
Title of Proceedings:	Civil-Comp Proceedings
Additional Information:	[1] This paper forms part of the published proceedings from the Seventh International Conference on Engineering Computational Technology, held in Valencia, Spain, 14-17 September 2010. It is also part of the FLOW AND ELECTROMAGNETIC FIELDS IN MATERIALS MODELLING SPECIAL SESSION ORGANISED BY K.A. PERICLEOUS
Uncontrolled Keywords:	magnetic levitation, liquid metal processing, computational fluid dynamics, magnetohydrodynamics, free surface, high frequency electric current.
Subjects:	Q Science > QA Mathematics Q Science > QA Mathematics > QA75 Electronic computers. Computer science
Pre-2014 Departments:	School of Computing & Mathematical Sciences School of Computing & Mathematical Sciences > Department of Computer Systems Technology School of Computing & Mathematical Sciences > Department of Mathematical Sciences
Related URLs:	Publisher Organisation Organisation Organisation
Last Modified:	27 Apr 2020 22:57
URI:	http://gala.gre.ac.uk/id/eprint/3971

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