【摘要】 结合一宽厚板坯单流连铸中间罐的物理模拟,应用两个组合模型对比分析了中间罐内流体流动特性,并考察了不同控流装置对中间罐内流动特性的影响.结果表明:两个组合模型在死区体积分数的计算上存在较大差别,本实验中的两者最大相差74.6%,传统的组合模型会对中间罐内流动特性的判断及优化方案的选择造成较大的偏差,而修正后的混合模型因对死区体积分数的计算的合理修正,可用来准确分析单流中间罐内流体的流动特性.本文通过实验研究提出了中间罐流场优化方案.更多还原

【Abstract】 By means of the measured results in a physical model for a wide plate single-strand tundish,two combined models for characterizing the melt flow were compared,and the effect of different control devices on fluid flow behaviour was also studied.The result shows that there is a big difference between these two models for the calculation of dead volume fraction and the maximal difference reaches 74.6% in the present experiment.The traditional model may make mistakes both in the estimation on the melt flow characterization and in the choice of optimal flow control devices.As a reasonable modification has been made on the calculation of dead volume fraction,the modified combined model is suitable for characterizing the melt flow in single-strand tundish.In present study,an optimal proposal is presented through the physical modeling study.更多还原