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FLUID DYNAMICS IN A GAS STIRRED LADLE——A Separated Flow Model with Stochastical Trajectories |
ZHOU Ming;LI Wencai Central Iron and Steel Research Institute; Ministry of Metallurgical Industry; Beijing |
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Cite this article:
ZHOU Ming;LI Wencai Central Iron and Steel Research Institute; Ministry of Metallurgical Industry; Beijing. FLUID DYNAMICS IN A GAS STIRRED LADLE——A Separated Flow Model with Stochastical Trajectories. Acta Metall Sin, 1990, 26(3): 92-98.
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Abstract A separated flow model with stochastical trajectories has been develop-ed to describe the fluid flow in a bubble stirred ladle. The bubble dispersion, tur-bulent characteristics and gas liquid interactions can be predicted by this mathema-tic model. The bubble flow as a dispersed phase is treated in Lagrangian frame ofreference and the analysis of the turbulent flow for liquid phase is conducted inEulcrian field. The interactions between bubbles and liquid phase are considered asa bubble source term in the control equation for continuous phase. The Monte Carlosampling method is used to determine bubble trajectories. The homogeneous flowmodel is also taken into consideration so that it can be compared with the separatedflow model. Numerical predictions for a water model of a ladle show that thepredicting results for the separated flow model are satisfatory quantitative agreementwith experiment ones, but the predicting ones for homogeneous model are at variancewith experiment ones.
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Received: 18 March 1990
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