基于数值模拟与水模拟的控流装置对大型双流中间包流场的影响

杨泽宇; 杨健; 赵宇航; 李贇通

doi:10.7513/j.issn.1004-7638.2025.03.019

基于数值模拟与水模拟的控流装置对大型双流中间包流场的影响

doi: 10.7513/j.issn.1004-7638.2025.03.019

上海大学材料科学与工程学院省部共建高品质特殊钢冶金与制备国家重点实验室, 上海 200444

详细信息

作者简介:
杨泽宇，1996年出生，男，满族，河北保定人，硕士，研究方向：炼钢连铸仿真，E-mail: yangzeyu121@shu.edu.cn

通讯作者:
杨健，1965年出生，男，汉族，湖南株洲人，博士，教授；研究方向：高品质钢冶炼、冶金人工智能等， E-mail: yang_jian@t.shu.edu.cn

中图分类号: TF777.1
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- 被引次数: 0
出版历程
- 收稿日期: 2024-06-20
- 网络出版日期: 2025-06-30
- 刊出日期: 2025-06-30

Influence of flow control devices on the flow field of a double-strand slab tundish based on numerical simulation and water modeling

State Key Laboratory of Advanced Special Steel, School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China

摘要

摘要: 为研究控流装置对某钢厂78 t大型双流对称中间包内钢液流场的影响规律，采用数值模拟计算与水模拟试验相结合的方法研究了不同的控流装置变化的影响。在欧拉-欧拉框架下对原始条件中间包1∶1建模，研究了有无坝孔、坝与长水口间距、堰与长水口间距、湍流抑制器高度、堰距中间包底部间距和坝高度对双流中间包内钢液流场的影响。结果表明：随着湍流抑制器高度加大，堰距中间包底部间距减小，中间包钢液平均停留时间显著增加，死区体积分数显著减小。另外，坝无孔可有效抑制短路流的发展，延长钢液的流动距离，增加平均停留时间。增大坝与长水口的间距，平均停留时间先增大后减小；增大堰与长水口的间距，通过坝孔直接流向出钢口的短路流得到发展，平均停留时间呈减小趋势。
- 中间包 /
- 数值模拟 /
- 控流装置 /
- 流场示踪剂 /
- 平均停留时间
Abstract: In order to study the influence of flow control devices on the molten steel flow field in a 78 ton large double strand symmetrical tundish in a certain steel plant, a combined method of numerical simulation and water modeling was adopted to investigate the effects of changes in different flow control devices. The 1:1 modeling of the prototype tundish under the Euler-Euler framework was established to study the influence of the presence or absence of dam holes, the distance between dam and ladle shroud, the distance between weir and ladle shroud, the height of turbulence inhibitor, the distance between weir and bottom of tundish and the height of dam on the molten steel flow field in the double strand tundish. The results show that with increasing the height of turbulence inhibitor, and decreasing the distance between weir and the bottom of tundish, the average residence times of molten steel in tundish increase obviously, and the volume fractions of dead zone decrease significantly. In addition, the dam without holes can effectively inhibit the development of short-circuit flow, extend the flow distance of the molten steel and increase the average residence time. When the distance between the dam and the ladle shroud is increased, the average residence time first increases and then decreases. With increasing the distance between weir and ladle shroud, the short-circuit flow to steel outlet through dam holes is developed, and the average residence time decreases.
- tundish /
- numerical simulation /
- flow control devices /
- flow field tracer /
- average residence time

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图 1 双流对称中间包

(a) 几何模型；(b) 六面体结构化网格

Figure 1. Two-strand symmetrical tundish

下载: 全尺寸图片幻灯片

图 2 有孔坝对中间包示踪剂分布的影响

Figure 2. Effect of dam with holes on the distribution of the tracer in the tundish

下载: 全尺寸图片幻灯片

图 3 无孔坝对中间包示踪剂分布的影响

Figure 3. Effect of dam without holes on the distribution of tracer in the tundish

下载: 全尺寸图片幻灯片

图 4 坝孔对中间包示踪剂分布与速度分布的影响（1000 s）

(a) 有孔; (b) 无孔

Figure 4. Effect of dam holes on the distribution of tracer and velocity in the tundish at 1 000 s

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图 5 坝与长水口的间距1800 mm对中间包示踪剂分布的影响

Figure 5. Effect of the distance between the dam and ladle shroud on the distribution of tracer in the tundish. The distance between the dam and ladle shroud is 1 800 mm

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图 6 坝与长水口的间距2000 mm对中间包示踪剂分布的影响

Figure 6. Effect of the distance between the dam and ladle shroud on the distribution of tracer in the tundish. The distance between the dam and ladle shroud is 2000 mm

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图 7 坝与长水口的间距2200 mm对中间包示踪剂分布的影响

Figure 7. Effect of the distance between the dam and ladle shroud on the distribution of tracer in the tundish. The distance between the dam and ladle shroud is 2200 mm

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图 8 坝与长水口的间距对中间包示踪剂分布与速度分布的影响（1000 s）

Figure 8. Effect of the distance between the dam and ladle shroud on the distribution of tracer and velocity in the tundish at 1000 s

下载: 全尺寸图片幻灯片

图 9 堰与长水口的间距900 mm对中间包示踪剂分布的影响

Figure 9. Effect of the distance between the weir and ladle shroud on the distribution of tracer in the tundish. The distance between the weir and ladle shroud is 900 mm

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图 10 堰与长水口的间距1400 mm对中间包示踪剂分布的影响

Figure 10. Effect of the distance between the weir and ladle shroud on the distribution of tracer in the tundish. The distance between the weir and ladle shroud is 1400 mm

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图 11 堰与长水口的间距对中间包示踪剂分布与速度分布的影响（1000 s）

堰距长水口的间距为(a) 900 mm；(b) 1 131.5 mm；(c) 1 400 mm

Figure 11. Effect of the distance between the weir and ladle shroud on the distribution of tracer and velocity in the tundish at 1000 s

下载: 全尺寸图片幻灯片

图 12 湍流抑制器高度对中间包示踪剂分布的影响

Figure 12. Effect of the height of the turbulence inhibitor on the distribution of tracer in the tundish

下载: 全尺寸图片幻灯片

图 13 湍流抑制器高度、堰距中间包底部间距和坝高度对中间包示踪剂分布和速度分布的影响（1000 s）

(a) 原始条件；(b) 湍流抑制器高度300 mm；(c) 堰距中间包底部间距400 mm；(d) 坝高度300 mm

Figure 13. Effect of the height of the turbulence inhibitor, the distance between the weir and the tundish bottom, and the height of the dam on the distribution of tracer and velocity in the tundish at 1000 s

下载: 全尺寸图片幻灯片

表 1 中间包的主要物性参数

Table 1. Main parameters of the industrial tundish

液相体积/m³	液相流量/ （m³∙h⁻¹）	液相密度/ （kg∙m⁻³）	平均温度/℃	运动黏度×10⁶/ （m²∙s⁻¹）	示踪剂扩散系数^[30−31] × 10⁸/（m²∙s⁻¹）
11.33	54.464	7020	1520	0.912	1.1

下载: 导出CSV

表 2 中间包数值模拟试验方案

Table 2. Experimental plan of tundish numerical simulation

方案	坝孔	坝与长水口的间距/mm	堰与长水口的间距/mm	湍流抑制器高度/mm	堰距中间包底部间距/mm	坝高度/ mm
1	有	1631.5	1131.5	250	300	400
2	无	1631.5	1131.5	250	300	400
3	有	1800	1131.5	250	300	400
4	有	2000	1131.5	250	300	400
5	有	2200	1131.5	250	300	400
6	有	1631.5	900	250	300	400
7	有	1631.5	1400	250	300	400
8	有	1631.5	1131.5	300	300	400
9	有	1631.5	1131.5	250	400	400
10	有	1631.5	1131.5	250	300	300
注：表中斜体字为与中间包原始参数的对比试验数据

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表 3 坝孔对中间包流场参数的影响

Table 3. Effect of dam holes on the flow field parameters in the tundish

坝孔	平均停留时间/s	混合区体积分数/%	活塞区体积分数/%	死区体积分数/%
有	694.3	27.44	54.51	18.13
无	712.5	31.49	52.53	15.98

下载: 导出CSV

表 4 坝与长水口的间距对中间包流场参数的影响

Table 4. Effect of the distance between the dam and ladle shroud on the flow field parameters in the tundish

坝与长水口的间距/mm	平均停留时间/s	混合区体积分数/%	活塞区体积分数/%	死区体积分数/%
1631.5	694.3	27.44	54.51	18.13
1800	718.6	31.3	53.44	15.23
2000	706.7	29.68	54.13	16.66
2200	687.5	27.72	53.35	18.93

下载: 导出CSV

表 5 堰与长水口的间距对中间包流场参数的影响

Table 5. Effect of the distance between the weir and ladle shroud on the flow field parameters in the tundish

堰与长水口的间距/mm	平均停留时间/s	混合区体积分数/%	活塞区体积分数/%	死区体积分数/%
900	737.9	33.36	53.65	12.98
1131.5	694.3	27.44	54.51	18.13
1400	686.0	20.9	59.75	19.1

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表 6 湍流抑制器高度、堰距中间包底部间距和坝高度对中间包流场参数的影响

Table 6. Effect of the height of the turbulence inhibitor, the distance between the weir and the tundish bottom, and the height of the dam on the RTD curves in the tundish

方案	平均停留时间/s	混合区体积分数/%	活塞区体积分数/%	死区体积分数/%
1	694.3	27.44	54.51	18.13
8	723.5	30.88	54.44	14.68
9	662.1	21.24	56.84	21.92
10	717.8	31.38	53.27	15.35

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基于数值模拟与水模拟的控流装置对大型双流中间包流场的影响

doi: 10.7513/j.issn.1004-7638.2025.03.019

作者简介:
杨泽宇，1996年出生，男，满族，河北保定人，硕士，研究方向：炼钢连铸仿真，E-mail: yangzeyu121@shu.edu.cn

通讯作者:
杨健，1965年出生，男，汉族，湖南株洲人，博士，教授；研究方向：高品质钢冶炼、冶金人工智能等， E-mail: yang_jian@t.shu.edu.cn

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Influence of flow control devices on the flow field of a double-strand slab tundish based on numerical simulation and water modeling

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基于数值模拟与水模拟的控流装置对大型双流中间包流场的影响

doi: 10.7513/j.issn.1004-7638.2025.03.019

作者简介: 杨泽宇，1996年出生，男，满族，河北保定人，硕士， 研究方向：炼钢连铸仿真，E-mail: yangzeyu121@shu.edu.cn

通讯作者: 杨健，1965年出生，男，汉族，湖南株洲人 ，博士，教授； 研究方向：高品质钢冶炼、冶金人工智能等， E-mail: yang_jian@t.shu.edu.cn

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Influence of flow control devices on the flow field of a double-strand slab tundish based on numerical simulation and water modeling

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作者简介:
杨泽宇，1996年出生，男，满族，河北保定人，硕士，研究方向：炼钢连铸仿真，E-mail: yangzeyu121@shu.edu.cn

通讯作者:
杨健，1965年出生，男，汉族，湖南株洲人，博士，教授；研究方向：高品质钢冶炼、冶金人工智能等， E-mail: yang_jian@t.shu.edu.cn