PMO作用下连铸二冷区电磁场-流场-温度场的数值模拟

郝军利, 赵静, 仲红刚, 徐智帅, 李仁兴, 翟启杰

doi:10.12066/j.issn.1007-2861.1814

上海大学学报(自然科学版) >

2018 , Vol. 24 >Issue 3: 412 - 421

DOI: https://doi.org/10.12066/j.issn.1007-2861.1814

研究论文

PMO作用下连铸二冷区电磁场-流场-温度场的数值模拟

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1.上海大学省部共建高品质特殊钢冶金与制备国家重点实验室, 上海 200072
2.上海大学上海市钢铁冶金新技术开发应用重点实验室, 上海 200072
3.上海大学上海材料基因组工程研究院, 上海 200072

收稿日期: 2016-06-15

网络出版日期: 2018-06-27

基金资助

上海市科委重点资助项目(14DZ2261200);国家重点基础研究发展计划资助项目(2011CB012902)

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Coupled numerical simulation on electromagnetic field, flow field and temperature field in round billet secondary cooling zone with PMO

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1. State Key Laboratory of Advanced Special Steel, Shanghai University, Shanghai 200072, China
2. Shanghai Key Laboratory of Advanced Ferrometallurgy, Shanghai University, Shanghai 200072, China
3. Shanghai Institute of Materials Genome, Shanghai University, Shanghai 200072, China

Received date: 2016-06-15

Online published: 2018-06-27

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摘要

建立了在圆坯二冷区脉冲磁致振荡条件下电磁场-流场-温度场耦合数学模型.利用ANSYS有限元软件,研究了在脉冲磁致振荡凝固细晶(pulse magneto oscillation, PMO)作用下铸坯内部磁感应强度、电磁力以及焦耳热的分布,并且通过耦合电磁力与焦耳热得到了相应流场及温度场的变化规律.研究表明, 当铸坯中施加脉冲磁致振荡作用时在电磁力的驱动下,铸坯内部靠近线圈位置将形成上下2个回流区,这种形式的流动能够降低铸坯的中心温度,使得铸坯内部的温度场分布更均匀, 有助于晶粒细化.

关键词： 圆坯; 脉冲磁致振荡; 电磁场; 流场; 温度场; 数值模拟

本文引用格式

郝军利, 赵静, 仲红刚, 徐智帅, 李仁兴, 翟启杰 . PMO作用下连铸二冷区电磁场-流场-温度场的数值模拟[J]. 上海大学学报(自然科学版), 2018 , 24(3) : 412 -421 . DOI: 10.12066/j.issn.1007-2861.1814

Abstract

A mathematical model that couples electromagnetic field, flow field and temperature field is established to study round billet secondary cooling zone under pulse magneto-oscillation pulse magneto oscillation (PMO) using the finite element analysis software ANSYS. Billet internal magnetic flux density, electromagnetic force and Joule heat distribution are analyzed. Distribution of the flow field and temperature field are obtained according to the coupling electromagnetic force and Joule heat. The results show that an upper and lower recirculation zone is formed since a driving electromagnetic force is generated by pulse magneto-oscillation. The flow can reduce billet center temperature. As a result, the internal temperature distribution becomes more uniform, which is beneficial to grain refinement.

Key words： round billet; pulsed magneto-oscillation; electromagnetic field; flow field; temperature field; numerical simulation

参考文献

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