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CHT'97 - Advances in Computational Heat Transfer. Proceedings of the International Symposium
May, 26-30, 1997 , Çesme, Turkey

DOI: 10.1615/ICHMT.1997.IntSymLiqTwoPhaseFlowTranspPhenCHT


ISBN Print: 978-1-56700-115-0

ISSN: 2578-5486

COMPUTATION OF TWO-PHASE FLOW WITH HEAT TRANSFER IN A SCALE-MODEL ELECTRIC ARC FURNACE

page 8
DOI: 10.1615/ICHMT.1997.IntSymLiqTwoPhaseFlowTranspPhenCHT.800
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SINOPSIS

Processing steel in an electric arc furnace involves a glassy slag layer floating on top of the molten steel. In current designs, oxygen-fuel jets are introduced through the furnace side wall to maintain high temperature near the liquid steel surface. For heat transfer purposes, one would like to position the jets so that the motion induced in the slag layer gives the highest net heat transfer rate to the steel. The present work forms part of a project that aims to provide basic data and understanding needed to optimize the positioning and conditions of the jets. At the centre of the study is a scale model designed to simulate the major processes affecting the convective heat transfer across the slag layer. This model captures the impingement of the lance flow onto the slag surface and the resulting surface depression and motion of the slag layer, both of which can be expected to affect heat transfer through the slag. The heat transfer rates to the simulated melt are measured as a function of jet position and angle in the experiment. A second part of the work, and that which will be reported, is the computation of the 3-dimensional two-phase flow with heat transfer occurring in the physical model.

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