流钢孔对中间包流体行为影响的数值模拟

doi:10.13228/j.boyuan.issn1006-9356.20190538

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摘要以某钢厂双流中间包为基础,建立了相似比为1∶3的物理模型和三维稳态数学模型,研究挡坝控流装置上流钢孔的孔径、数量和倾斜角度等变化因素对中间包内流场的影响。结果表明,孔径大小和流钢孔的倾斜角度对中间包内钢液的流动特性至关重要。在中间包挡坝上开设的流钢孔孔径为120 mm、倾斜角度为15°时,可改变钢液流向,延长钢液流动轨迹,增加夹杂物去除概率,与原型相比,中间包内钢液平均停留时间增加近28 s,死区比例降低46.5%,理论残钢量降低79%。

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	李茂旺
	李怡宏
	董超

关键词 ：中间包, 流钢孔, 流场, 数值模拟

Abstract：Based on the two-strand tundish of a steel mill, a physical model with a similarity ratio of 1:3 and a three-dimensional steady-state mathematical model were established to study the influence of the diameter, number and inclination angle of the upstream steel holes on the flow field of the dam control device. The results show that the size and the inclination angle of the flow hole are crucial to the flow characteristics of molten steel in tundish. When the orifice diameter of flow steel is 120 mm and the inclination angle is 15 degrees, more of the flow direction of molten steel can be changed, the trajectory can be prolonged, the floating and removal probability of inclusions can be increased. Compared with the prototype, the average residence time of molten steel in tundish can be increased by nearly 28 s, the proportion of dead zone can be reduced by 46.5%, and the amount of residual steel can be decreased by 79%.

Key words： tundish flow steel hole flow field numerical simulation

收稿日期: 2019-11-13

基金资助:国家自然科学基金资助项目(51704203)

通讯作者: 李怡宏(1986—), 女, 博士, 副教授; E-mail: liyh@tyust.edu.cn

作者简介: 李茂旺 (1966—), 男, 大学本科, 副教授; E-mail: 574641832@qq.com

引用本文:

李茂旺, 李怡宏, 董超. 流钢孔对中间包流体行为影响的数值模拟[J]. 中国冶金, 2020, 30(6): 55-62. LI Mao-wang, LI Yi-hong, DONG Chao. Numerical modeling of steel flow characteristics intundish with different flow steel holes on the dam[J]. China Metallurgy, 2020, 30(6): 55-62.

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http://www.zgyj.ac.cn/CN/10.13228/j.boyuan.issn1006-9356.20190538 或 http://www.zgyj.ac.cn/CN/Y2020/V30/I6/55

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