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Abstract
Three-dimensional of the turbulent reactive flow and radiative heat transfer problem in a walking-beam-type slab reheating furnace simulations are successfully performed in the present study by the commercial software STAR-CD. The geometric model built herein considers the whole furnace, including the burners, the walking-beam system with skid buttons, the slab, the dams, and the down-take outlet. The results show that the difference between the predicted and measured heating efficiencies is 6.8%, and that the predictions of the temperatures at selected checking points differ from the measurements within only 10%. The present study also shows that the walking-beam system causes significant radiation shielding to the bottom surface of the slab, resulting in skid marks.
The support of this work by the National Science Council, Taiwan, under the contract NSC 95-2212-E-002-336-MY2 and that by the China Steel Corporation under the contract 94T6D0016E are both gratefully acknowledged.