论文部分内容阅读
利用1∶1的水力学模型对双侧孔水口结构下的CSP结晶器内卷渣现象进行了模拟.结果表明:由于双侧孔水口下结晶器内液面的动态失稳现象,导致其液面卷渣呈周期性;液面失稳态时会发生连续剪切卷渣,液面卷渣有效涡主要出现在液面失稳态,拉速对液面卷渣影响较大.分析了液渣滴在结晶器内运动的瞬态特征.CSP结晶器内液面卷渣的周期性导致铸坯内大型夹杂物纵向分布差异较大.
The 1: 1 hydraulic model was used to simulate the entrainment of slag in the CSP mold under the structure of the double-side nozzle.The results show that due to the dynamic instability of the liquid surface in the mold under the double-side nozzle, The dregs were cyclical; continuous shear entrapment occurred when the fluid surface was in the steady state, the effective vortex of the dregs mainly appeared in the liquid surface destabilization state, and the pulling speed had a great influence on the dregs. The transient characteristics of slag droplet movement in the mold.The periodicity of the liquid slag entrainment in the CSP mold resulted in large differences in the longitudinal distribution of the large inclusions in the slab.