三流对称中间包数值模拟流场优化

Flow field optimization of three-stream symmetric tundish numerical simulation

为了进一步提高某钢厂的产品质量,将其中间包体积进行了扩充,改变了原来的流动结构,优化了三流中间包扩容后的挡墙侧孔,以减小中间包死区比例,增大中间包利用效率。针对当前所使用的中间包存在各流间水口一致性较差,且死区比例较大的问题。采用Ansys公司的Fluent软件,通过数值模拟方法优化了该中间包挡墙结构。挡墙侧孔改进后的中间包虽然其流间温度差比原来增加了0.9℃,但其死区比例从原来的21.48%降低为14.70%,有效减少了死区比例,并提高了中间包各流间的一致性,达到了较好的冶金效果。

In order to further improve the product quality of a steel plant, the volume of its tundish has been expanded and the original flow structure has been changed. In this paper, the side hole of the retaining wall after the expansion of the three-stream tundish has been optimized to reduce the proportion of dead zone in the tundish and increase the utilization efficiency of the tundish. The tundish currently used in the plant has the problems of poor consistency of water inlets between streams and large proportion of dead zones. In this paper, the tundish retaining wall structure is optimized by numerical simulation using the fluent software of Ansys. Although the temperature difference between the flows in the tundish after the improvement of the side hole of the retaining wall is 0.9 ℃ higher than the original one, the proportion of dead zone is reduced from 21.48% to 14.70%, which effectively reduces the proportion of dead zone, improves the consistency between the flows in the tundish, and achieves a better metallurgical effect.