板坯连铸电磁制动下结晶器内金属流场的数学物理模拟

doi:10.3969/j.issn.1007-2861.2013.06.002

上海大学学报(自然科学版) ›› 2013, Vol. 19 ›› Issue (6): 556-561.doi: 10.3969/j.issn.1007-2861.2013.06.002

板坯连铸电磁制动下结晶器内金属流场的数学物理模拟

常同旭, 贾皓, 张振强, 邓康, 任忠鸣

上海大学上海市现代冶金与材料制备重点实验室, 上海 200072

出版日期:2013-12-30 发布日期:2013-12-30
通讯作者: 邓康(1958—), 男, 教授, 博士生导师, 研究方向为电磁冶金和治金工程力学. E-mail:dengk2000@163.com
作者简介:邓康(1958—), 男, 教授, 博士生导师, 研究方向为电磁冶金和治金工程力学.
基金资助:
国家自然科学基金资助项目(50674066)

Numerical and Physical Simulation on Flow in Mold with EMBr in Continuous Casting of Slab

CHANG Tong-xu, JIA Hao, ZHANG Zhen-qiang, DENG Kang, REN Zhong-ming

Shanghai Key Laboratory of Modern Metallurgy and Materials Processing, Shanghai University, Shanghai 200072, China

Online:2013-12-30 Published:2013-12-30

摘要/Abstract

摘要： 采用雷诺时均湍流模型并结合水银物理模拟实验, 研究不同磁场配置下板坯结晶器内的金属流动规律, 并以此分析不同磁场配置对工艺过程的影响. 结果表明: 雷诺应力模型(Reynolds stress model, RSM)能够较准确地反映电磁制动(electromagnetic braking, EMBr)下金属流场的变化, 该变化引起水口射流及其对结晶器窄边冲刷强度的改变; 在全幅二段电磁制动下, 上部磁场对液面水平速度和湍动性的抑制作用明显, 但从化渣和降低冲击深度的工艺要求来看, 上部磁场强度不宜过大.

关键词: 板坯连铸, 电磁制动, 结晶器, 雷诺应力模型, 流场

Abstract: Combined with a mercury experiment, a Reynolds time-average model was applied to investigate the effects of magnetic flux density on flow in the mold cavity with different electromagnetic braking (EMBr) and on the process. The results show that the Reynolds stress model (RSM) can accurately reflect flow changes of the mold with EMBr. Nozzle jet profile and washing intensity to the thin wall of mold are varied with alteration of magnetic flux density. The upper portion of the magnetic field can obviously inhibit the surface horizontal velocity and turbulence. However, considering the melting of powder and impingement depth, the upper portion of the magnetic flux density should not be too high.

Key words: continuous casting of slab, electromagnetic braking (EMBr), flow, mold, Reynolds stress model(RSM)

中图分类号:

TF 777.1

常同旭, 贾皓, 张振强, 邓康, 任忠鸣. 板坯连铸电磁制动下结晶器内金属流场的数学物理模拟[J]. 上海大学学报(自然科学版), 2013, 19(6): 556-561.

CHANG Tong-xu, JIA Hao, ZHANG Zhen-qiang, DENG Kang, REN Zhong-ming. Numerical and Physical Simulation on Flow in Mold with EMBr in Continuous Casting of Slab[J]. Journal of Shanghai University（Natural Science Edition）, 2013, 19(6): 556-561.

参考文献

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板坯连铸电磁制动下结晶器内金属流场的数学物理模拟

Numerical and Physical Simulation on Flow in Mold with EMBr in Continuous Casting of Slab

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