Mathematical model for transient fluid flow in a continuous casting mold
Mathematical model for transient fluid flow in a continuous casting mold
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DOI：
10.2355/isijinternational.41.1252
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发表时间：
2001-10
影响因子：
1.8
通讯作者：
K. Takatani;Y. Tanizawa;H. Mizukami;Kenzi Nishimura
中科院分区：
文献类型：
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作者：
K. Takatani;Y. Tanizawa;H. Mizukami;Kenzi Nishimura
建立了一个能模拟连铸结晶器内瞬时流动现象的数学模型。在该数学模型中，可以描述由Ar气体注入浸没水口、钢液和凝固壳体组成的多相流现象。为了验证数学模型的有效性，进行了水冷模型和熔融金属热模型实验，并将测量的流体流动现象与计算结果进行了比较。在水冷模型中，测量了半月面下流动的时间波动和半月面形状的变形；在熔融金属热模型中，研究了Ar气泡对结晶器内流体流动的影响。计算结果与实验测量数据吻合较好。利用该数学模型进行了工厂模拟，研究了Ar气泡对连铸结晶器内流体流动现象的影响。
A mathematical model that can simulate the transient fluid flow phenomena in a continuous casting mold has been developed. In this mathematical model, multi-phase flow phenomena which consist of the Ar gas injected into the submerged entry nozzle, molten steel and solidified shell can be described. To verify the availability of the mathematical model, water cold model and fused metal hot model experiments were conducted and comparisons of the measured fluid flow phenomena were made with computational results. In the water cold model, the time fluctuation of the fluid flow just under the meniscus and the deformation of the meniscus shape were measured and in the fused metal hot model, effect of the Ar gas bubble on the fluid flow in the mold were investigated. Computational results gave good agreement with both experimental measured data. Real plant simulation were conducted to investigate the effect of Ar gas bubble on the fluid flow phenomena in the continuous casting mold by using this mathematical model.