Flow field simulation of thin slab funnel-type crystalline steel based on large vortex simulation
LI Xue-kai1,2, ZHANG Yan-chao1,2, ZHANG Cai-jun1,2, XIAO Peng-cheng1,2, GUO Wen-bin3
1. School of Metallurgy and Energy, North China University of Science and Technology, Tangshan 063000, Hebei,China; 2. Hebei High Quality Steel Continuous Casting Engineering Technology Research Center, Tangshan 063000,Hebei,China; 3. Tangshan Thick Plate Co.,Ltd., Tangshan 063000,Hebei,China
Abstract：The core of efficient continuous casting is high drawing speed. In order to explore the influence of different operating parameters on the flow field of thin slab crystallizer under the condition of high drawing speed, the paper takes FTSC (Flexible Thin Slab Caster) thin slab crystallizer and new five-hole water orifice as research objects. Based on the surface velocity and fluctuation height of the steel slag interface in the mold flow field, a slag-liquid steel two-phase flow model was established by using large eddy simulation method. The numerical simulation of the mold flow field was carried out, and the effects of drawing speed, immersion depth of the water nozzle and the viscosity of the protective slag on the mold flow field and the steel slag interface flow behavior were analyzed. The results show that increasing the drawing speed can increase the surface velocity and liquid level fluctuation of steel slag interface. The deepening of the immersion depth of the nozzle will reduce the surface pulling speed and liquid level fluctuation. At the drawing speed of 6 m/min, increasing the viscosity of the protective slag can effectively inhibit the slag rolling.
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2023, Vol. 42 
