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Numerical model of electrode induction melting for gas atomization

Valdis Bojarevics (Centre for Numerical Modelling and Process Analysis, CMS, University of Greenwich, London, UK)
Alan Roy (Centre for Numerical Modelling and Process Analysis, CMS, University of Greenwich, London, UK)
Koulis Pericleous (Centre for Numerical Modelling and Process Analysis, CMS, University of Greenwich, London, UK)

Abstract

Purpose

The purpose of this paper is to create a numerical model of electrode induction melting process for the gas atomization (EIGA) and process and investigate the complex interaction of the electromagnetic and thermal fields on the fluid flow with free surface.

Design/methodology/approach

The modelling approach is based on the free surface code SPHINX which includes time dependent electromagnetic, thermal and fluid flow with free surface modelling and the commercial software COMSOL for investigating 3D electromagnetic effects.

Findings

The melting dynamics, liquid film formation and the outflow free surface behavior are predicted by SPHINX using an optimized geometry. Quasi‐stationary AC electromagnetic solutions with COMSOL predict some 3D effects of the coil, including frequency dependent estimates of voltage, electric current and power.

Originality/value

The importance of magnetic forces controlling the free surface jet formation, partial semi‐levitation and the outflow superheat is uncovered by numerical modelling tools. An optimized geometry is presented for the EIGA process.

Keywords

Citation

Bojarevics, V., Roy, A. and Pericleous, K. (2011), "Numerical model of electrode induction melting for gas atomization", COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, Vol. 30 No. 5, pp. 1455-1466. https://doi.org/10.1108/03321641111152612

Publisher

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Emerald Group Publishing Limited

Copyright © 2011, Emerald Group Publishing Limited