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Modelling magnetically excited and magnetically damped liquid metal flow

Modelling magnetically excited and magnetically damped liquid metal flow

Bojarevics, Valdis ORCID: 0000-0002-7326-7748 and Pericleous, Kyriacos ORCID: 0000-0002-7426-9999 (2012) Modelling magnetically excited and magnetically damped liquid metal flow. In: Nastac, Laurentiu, Zhang, Lifeng, Thomas, Brian G., Sabau, Adrian, El-Kaddah, Nagy, Powell, Adam C. and Combeau, Herve, (eds.) CFD Modeling and Simulation in Materials. J. Wiley & Sons Inc, USA, pp. 245-252. ISBN 978-1-1182-9615-8 : 111829615X

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A number of different methods have been developed for noncontact electromagnetic treatment of liquid metal and to investigate the melting/solidification processes. Applying AC magnetic field in terrestrial conditions, along with the buoyancy and thermo-capillary forces, results in turbulent flow. The use of a homogenous DC magnetic field allows damping both of the turbulence and the large scale flow at different rates leading to surprising results at some stages. The dynamic interaction of the turbulent flow with the oscillating interface needs to be accounted if it is required to levitate liquid metal of up to few kilograms without the contact to container walls. At the high values of magnetic field some oscillation modes are damped quickly, while others are modified with a considerable shift of the oscillating droplet frequencies and the damping constants from the non-magnetic case. Numerical models are used to investigate behavior of liquid metal suspended in high DC magnetic fields providing microgravity-like conditions with laminar viscosity and heat transfer to the surroundings.

Item Type: Book Section
Additional Information: [1] Originally presented as a keynote speech at the CFD Modeling and Simulation in Materials Processing: Electromagnetic and Ultrasonic Processing of Materials symposium on Wed 14th March at 2012 TMS 141st Annual Meeting & Exhibition (The Minerals, Metals & Materials Society), March 11-15, 2012, Orlando Florida
Uncontrolled Keywords: electromagnetic processing, liquid metal, free surface dynamics, magnetohydrodynamics
Subjects: Q Science > QA Mathematics
T Technology > T Technology (General)
Pre-2014 Departments: School of Computing & Mathematical Sciences
School of Computing & Mathematical Sciences > Centre for Numerical Modelling & Process Analysis > Computational Science & Engineering Group
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Last Modified: 27 Apr 2020 22:57

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