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ISSN Online: 2377-424X

ISBN CD: 1-56700-226-9

ISBN Online: 1-56700-225-0

International Heat Transfer Conference 13
August, 13-18, 2006, Sydney, Australia

3D COMPUTER MODELLING OF ELECTROMAGNETIC, FLOW AND THERMAL CHARACTERISTICS IN CHANNEL INDUCTION FURNACES

Get access (open in a dialog) DOI: 10.1615/IHTC13.p9.70
11 pages

Аннотация

Abstract: Channel induction furnaces play a very important role in process metallurgy for melting and holding ferrous and nonferrous metals and the understanding of the processes involved in their operation and the capability of predicting their performance is vital to the economical operation of the furnaces and production lines. The paper describes the methodology and some results of 3D modelling of electromagnetically excited turbulent flow (electromagnetic stirring) of molten metal (zinc/aluminium alloy) in a twin-channel induction furnace. The modelling covers both the inductor and the main pot (bath) holding the melt. The modelling is carried out for an arbitrary furnace geometry operating under steady state condition in which the free surface of the melt is maintained at constant temperature and pressure. The objective of the study is to assess the applicability of some of the existing turbulent models to this type of problems and examine the resulting temperature profile of the system in general and the inductor refractory in particular. The processes of electromagnetic induction, Joule heating, turbulent flow and heat transfer are modelled in sequence using a single multiphysics software package. The work shows that it is possible to model complex physical processes adequately without the need for modification of the existing standard turbulence models. The results obtained are similar to the published results of experimental investigation of the flow of mercury and Woods metal under laboratory test conditions.