不同流量下两流中间包水力学模拟试验

Hydraulics Simulated Experimental Study on a Two Strand Tundish at Different Flow Rate

采用1∶2.5的模型对国内某钢厂72 t两流板坯连铸中间包进行水力学模拟。在不同的流量情况下,研究有、无控流装置以及湍流抑制器对中间包流场的影响,得出了最佳内腔的控流装置组合。研究表明,最佳控流装置组合的挡堰深度为80 mm,挡坝高度为100 mm、坝堰间距80 mm、并安装湍流抑制器的效果较佳。在流量分别为1.63、2.00、2.57、3.00m3/h情况下,最短响应时间分别增加了13、7、22、13 s,死区体积分别降低了3.5%、11.2%、9.1%、13.8%。

A 1∶ 2. 5 hydraulics modle experiments were conducted to simulate a 72 t two- strand slab continuous casting tundish. The impact of using flow control devices and turbulence inhibitor on the flow field in tundish at different flow rate of flow had been investigated in order to gain the best combination of flow control devices in the inner cavity. The result shows that the best combination of flow control device includes 80 mm depth of weir,100 mm,height of dam,80 mm distance between weir and dam,as well as installation of turbulence inhibitor. When the flow flux are 1. 63,2. 00,2. 57 and 3. 00（ m3/ h）,the shortest residence time increase by 13,7,22 and 13 seconds,and dead area ratio decreases by 3. 5%,11. 2%,9. 1% and 13. 8%,respectively.