四流T型中间包内控流装置优化的物理模拟.pdfVIP

第十五届全国炼钢学术会议文集 四流T 型中间包内控流装置优化的物理模拟 屈天鹏 1， 赵晨光 1，刘承军1，姜茂发1，余 刚2 （1.东北大学材料与冶金学院，辽宁 沈阳 110004 ；2.天津天丰钢铁有限公司， 天津 301606 ） 摘 要：多流中间包冶金存在的最大难题就是不能保证各水口之间流动特征的均匀一致。本论文建立了1： 3 的物理模型，利用“刺激-响应”技术对中间包内的流场进行了研究。分析比较了三种导流隔墙分别与湍 流控制器组合的实验方案，得出如下结论：湍流控制器与导流隔墙的合理搭配可以充分改善中间包内流体的 流动特征，促使各水口之间的流动特征趋于一致。采用 V型挡墙的实验方案获得了最佳的综合评价指标，延 长了流体的停留时间，平衡了各流股的流动特性，预计能够较好地控制铸坯质量。 关键词：中间包 控流装置 优化设计 物理模拟 Physical Simulation of Optimization for Flow Control Devices in Four-Strand T-Type Tundish Qu-Tianpeng1, Zhao-Chenguang1, Liu-Chengjun1, Jiang-Maofa1, Yu-Gang2 (1. School of Materials and Metallurgy, Northeastern University, Shenyang , 110004 , China; 2. Tianjin Tianfeng Iron Steel Co. , Tianjin 301606) ABSTRACT: At present, the most difficult problem of multi-strand tundish is the inconsistency of flow characteristic along the strands. In this paper, the scaled tundish (1:3) was built and the flow field in the tundish was studied by applying pulse stimulus-response technique. The effects of experimental configurations of baffles and TI (turbulence inhibitor) on flow field were compared. Consequently, it comes to the conclusion that the proper combination of baffles and TI is beneficial to improve the flow condition in the tundish and tended to balance the flow characteristic of different strands. The V-type baffle is beneficial to extend the resident time and balance the flow conditions of different strand, eventually improve the quality of the production. KEY WORDS: tundish, flow control devices, optimum design, physical modeling 1 前言 对于多流中间包而言， 其主要功能就是均匀分配中间包钢液到各水口，保证各流股之间的温度和成 分趋于一致，同时有效控制钢中夹杂。精确而合理地使用控流装置不但可以控制中间包内流体的流态，延 [1,2] 长各流股在中