漩流中间包物理和数值模拟

Physical and Numerical Simulation Research on Swirling Flow Tundish

通过漩流中间包物理模型实验和数值模拟,考察了漩流室直径、高度和入口流量对漩流室内和整个中间包内流体流动的影响,得到了中间包的流动状态及浓度变化趋势和漩流室内旋转速度的分布规律,并对漩流中间包内夹杂物的运动进行了分析.结果表明,数值模拟结果和物理模拟实验结果一致.由于漩流室加入而产生的旋转运动速度与电磁离心中间包可比.研究结果可作为实际漩流中间包优化设计的基础依据.

By water model experiments and numerical simulation of a swirling flow tundish for continuous casting of steels,the influences of swirling chamber dimensions and liquid flowrate on the flowing behavior in the chamber and the whole tundish were examined.The variations of flow pattern,tracer concentration and rotational velocity vector in the chamber were determined,and the motion of an inclusion particle was analyzed.The numerical simulation results agree well with the physical modeling results.The rotational speed aroused by introducing the swirling chamber is comparable with that of centrifugal tundish by electromagnetism.This affords a foundation for optimization design of a swirling flow tundish.