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Modeling of a DC electric arc furnace - Heat transfer from the arc
KTH, Superseded Departments, Materials Science and Engineering.
2000 (English)In: ISIJ International, ISSN 0915-1559, Vol. 40, no 11, 1089-1097 p.Article in journal (Refereed) Published
Abstract [en]

A mathematical model describing heat and fluid flow in an electric are has been developed and used to predict heat transfer from the are to the steel bath in a DC Electric Are Furnace. The are model takes he separate contributions to the heat transfer from each involved mechanism into account, i.e. radiation, convection, condensation and energy transported by electrons. The model predicts heat transfer for different currents and are lengths. Model predictions show that are efficiency is higher for lower power input. The model also predicts shear stresses and current density distribution at the steel surface. This information can be used as boundary condition input to simulate the effect of heating with electrodes in a DC EAF on the heat and fluid flow in the steel bath.

Place, publisher, year, edition, pages
2000. Vol. 40, no 11, 1089-1097 p.
Keyword [en]
modeling, arc, heat transfer, intensity argon arc, fluid-flow, transport-coefficients, plasmas, nitrogen, region, oxygen
URN: urn:nbn:se:kth:diva-20165ISI: 000165352600006OAI: diva2:338858
QC 20100525Available from: 2010-08-10 Created: 2010-08-10Bibliographically approved

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Jönsson, Pär
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