薄板坯连铸结晶器内钢液流动与传热及凝固耦合的数值模拟

›› 2015, Vol. 15 ›› Issue (2): 205-211.

薄板坯连铸结晶器内钢液流动与传热及凝固耦合的数值模拟

岳强翟张霞裴晓航张炯王建军

安徽工业大学冶金与资源学院安徽工业大学冶金与资源学院安徽工业大学冶金与资源学院安徽工业大学冶金与资源学院安徽工业大学冶金与资源学院

收稿日期:2015-01-08 修回日期:2015-02-03 出版日期:2015-05-05 发布日期:2015-05-05
通讯作者: 岳强

Coupled Modeling of Flow, Heat Transfer and Solidification of Molten Steel in a Thin Slab Continuous Casting Mold

YUE Qiang ZHAI Zhang-xia PEI Xiao-hang ZHANG Jiong WANG Jian-jun

School of Metallurgy and Resource，Anhui University of Technology School of Metallurgy and Resource，Anhui University of Technology School of Metallurgy and Resource，Anhui University of Technology School of Metallurgy and Resource，Anhui University of Technology School of Metallurgy and Resource，Anhui University of Technology

Received:2015-01-08 Revised:2015-02-03 Online:2015-05-05 Published:2015-05-05
Contact: YUE Qiang

摘要/Abstract

摘要： 针对断面为135 mm×1200 mm的薄板坯连铸结晶器，建立了4孔浸入式水口下薄板坯连铸结晶器内钢液流动、传热和凝固耦合的三维数学模型，引入F数评价薄板坯连铸结晶器内液面波动情况，分析结晶器内钢液流动、温度分布及凝固坯壳厚度的变化情况. 结果表明，用F数评价薄板坯连铸结晶器内液面波动可行，拉速由1.44 m/min增加到1.80 m/min时，钢液液面波动的F数由1.05增加到2.55，凝固壳厚度(dshell)与凝固时间(t)满足关系式dshell=18.92t1/2?1.05，模拟结果与文献实验结果基本一致.

关键词: 薄板坯, 浇铸, 结晶器, 液面波动, F数, 凝固

Abstract: A three-dimensional coupled numerical simulation model of molten steel flow, temperature and solidification in the mold of a thin slab caster is presented using FLUENT software. The computational model section is 135 mm×1200 mm, and submerged entry nozzle has four outlets. F value is introduced to evaluate the liquid level fluctuation in the thin slab continuous casting mold. The molten steel flow, temperature distribution and solidified shell thickness variation are discussed. The results show that F value applied in description of liquid level fluctuation in the thin slab mold is feasible, when the casting speed increased from 1.44 to 1.80 m/min, the F value increased from 1.05 to 2.55. The relationship between the shell thickness (dshell) and solidification time (t) in the mold and secondary cooling zone is regressed as dshell=19.62t1/2-2.52, which basically agrees with the literatures.

Key words: thin slab, casting, mold, surface fluctuation, F value, solidification

中图分类号:

TF777.1

岳强翟张霞裴晓航张炯王建军. 薄板坯连铸结晶器内钢液流动与传热及凝固耦合的数值模拟[J]. , 2015, 15(2): 205-211.

YUE Qiang ZHAI Zhang-xia PEI Xiao-hang ZHANG Jiong WANG Jian-jun. Coupled Modeling of Flow, Heat Transfer and Solidification of Molten Steel in a Thin Slab Continuous Casting Mold[J]. , 2015, 15(2): 205-211.

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