TY - JOUR
T1 - Transient fluid flow and superheat transport in continuous casting of steel slabs
AU - Zhao, B.
AU - Thomas, B. G.
AU - Vanka, S. P.
AU - O'Malley, R. J.
N1 - Funding Information:
The authors thank the National Science Foundation (Grant No. DMI-01-15486) for the support that has made this research possible. This work is also supported by the member companies of the Continuous Casting Consortium at the University of Illinois at Urbana–Champaign (UIUC). Special thanks are due to Ya Meng and Tiebiao Shi for help with the plant measurements and to the National Center for Supercomputing Applications (NCSA) at UIUC for computational facilities.
Copyright:
Copyright 2011 Elsevier B.V., All rights reserved.
PY - 2005/12
Y1 - 2005/12
N2 - The turbulent flow of molten steel and the superheat transport in the mold region of a continuous caster of thin steel slabs are investigated with transient large-eddy simulations and plant experiments. The predicted fluid velocities matched measurements taken from dye-injection experiments on full-scale water models of the process. The corresponding predicted temperatures matched measurements by thermocouples lowered into the molten steel during continuous casting. The classic double-roll flow pattern is confirmed for this 132 × 984 mm slab caster at a 1.52 m/min casting speed, with about 85 pct of the single-phase flow leaving the two side ports of the three-port nozzle. The temperature in the top portion of the molten pool dropped to about 30 pet of the superheat-temperature difference entering the mold of 58°C. About 12 pet of the superheat is extracted at the narrow face, where the peak heat flux averages almost 750 kW/m 2 and the instantaneous peaks exceed 1500 kW/m 2. Two-thirds of the superheat is removed in the mold. The jets exiting the nozzle ports exhibit chaotic variations, producing temperature fluctuations in the upper liquid pool of ±4°C and peak heat-flux variations of ±350 kW/m 2. Employing a static-k subgrid-scale (SGS) model into the three-dimensional (3-D) finite-volume code had little effect on the solution.
AB - The turbulent flow of molten steel and the superheat transport in the mold region of a continuous caster of thin steel slabs are investigated with transient large-eddy simulations and plant experiments. The predicted fluid velocities matched measurements taken from dye-injection experiments on full-scale water models of the process. The corresponding predicted temperatures matched measurements by thermocouples lowered into the molten steel during continuous casting. The classic double-roll flow pattern is confirmed for this 132 × 984 mm slab caster at a 1.52 m/min casting speed, with about 85 pct of the single-phase flow leaving the two side ports of the three-port nozzle. The temperature in the top portion of the molten pool dropped to about 30 pet of the superheat-temperature difference entering the mold of 58°C. About 12 pet of the superheat is extracted at the narrow face, where the peak heat flux averages almost 750 kW/m 2 and the instantaneous peaks exceed 1500 kW/m 2. Two-thirds of the superheat is removed in the mold. The jets exiting the nozzle ports exhibit chaotic variations, producing temperature fluctuations in the upper liquid pool of ±4°C and peak heat-flux variations of ±350 kW/m 2. Employing a static-k subgrid-scale (SGS) model into the three-dimensional (3-D) finite-volume code had little effect on the solution.
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U2 - 10.1007/s11663-005-0083-3
DO - 10.1007/s11663-005-0083-3
M3 - Article
AN - SCOPUS:31144454597
SN - 1073-5615
VL - 36
SP - 801
EP - 823
JO - Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science
JF - Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science
IS - 6
ER -