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Numerical studies of the melting process in the induction furnace with cold crucible

A. Umbrasko (Institute for Electrothermal Processes, University of Hanover, Hanover, Germany)
E. Baake (Institute for Electrothermal Processes, University of Hanover, Hanover, Germany)
B. Nacke (Institute for Electrothermal Processes, University of Hanover, Hanover, Germany)
A. Jakovics (Laboratory for Mathematical Modelling of Environmental and Technological Processes, University of Latvia, Riga, Latvia)

Abstract

Purpose

Aims to present recent activities in numerical modeling of cold crucible melting process.

Design/methodology/approach

3D numerical analysis was used for electromagnetic problem and 3D large eddy simulation (LES) method was applied for fluid flow modeling.

Findings

The comparative modeling shows, that higher H/D ratio of the melt is more efficient when total power consumption is considered, but this advantage is held back by higher heat losses through the crucible walls. Also, calculations reveal that lower frequencies, which are energetically less effective, provide better mixing of the melt.

Originality/value

3D electromagnetic model, which allows to take into account non‐symmetrical distribution of Joule heat sources, together with transient LES fluid flow simulation gives the opportunity of accurate prediction of temperature distribution in the melt.

Keywords

Citation

Umbrasko, A., Baake, E., Nacke, B. and Jakovics, A. (2008), "Numerical studies of the melting process in the induction furnace with cold crucible", COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, Vol. 27 No. 2, pp. 359-368. https://doi.org/10.1108/03321640810847643

Publisher

:

Emerald Group Publishing Limited

Copyright © 2008, Emerald Group Publishing Limited

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