Abstract
In the current study, the fluid flow and thermal stratification during the holding period are numerically simulated. The standard k–ε two-equation turbulence model is adopted to describe the turbulence. The trajectories of inclusions are calculated by the discrete phase model (DPM) considering the stochastic effect of turbulence. Two different initial conditions for the flow field are compared: the quiescent state of flow and the fluid flow induced by gas stirring. Significant differences are observed between these cases. In practice, the holding period starts from the shut-off of the gas blowing. Thus, it is proposed that the flow field at the terminal of gas stirring should be considered for the simulation of the fluid flow, heat transfer, and inclusion motion during the holding period.
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Acknowledgments
The authors are grateful for support from the National Key R&D Program of China (2017YFB0304000&2017YFB0304001), National Science Foundation China (Grant No. 51725402), Beijing Key Laboratory of Green Recycling and Extraction of Metals (GREM) and the High Quality steel Consortium (HQSC) and Green Process Metallurgy and Modeling (GPM2) at the School of Metallurgical and Ecological Engineering at University of Science and Technology Beijing (USTB), China.
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Manuscript submitted October 18, 2018.
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Duan, H., Ren, Y. & Zhang, L. Fluid Flow, Thermal Stratification, and Inclusion Motion During Holding Period in Steel Ladles. Metall Mater Trans B 50, 1476–1489 (2019). https://doi.org/10.1007/s11663-019-01535-x
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DOI: https://doi.org/10.1007/s11663-019-01535-x