Numerical Simulation of Fluid-thermal Coupling Field of Tundish in Static Magnetic Field

Xu Ting; Zhang Lihua; Li Xiaoqian; Chen Pinghu; Tang Jia

doi:10.15980/j.tzzz.2015.04.009

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Numerical Simulation of Fluid-thermal Coupling Field of Tundish in Static Magnetic Field
Vol. 35, Issue 4, Pages: 365-369(2015)
Published： 2015 ，
DOI： 10.15980/j.tzzz.2015.04.009

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[1]徐婷,张立华,李晓谦,陈平虎,唐佳.稳恒磁场下中间包温度场流场耦合数值模拟[J].特种铸造及有色合金,2015,35(04):365-369.

Xu Ting, Zhang Lihua, Li Xiaoqian, et al. Numerical Simulation of Fluid-thermal Coupling Field of Tundish in Static Magnetic Field. [J]. Special Casting & Nonferrous Alloys 35(4):365-369(2015)
[1]徐婷,张立华,李晓谦,陈平虎,唐佳.稳恒磁场下中间包温度场流场耦合数值模拟[J].特种铸造及有色合金,2015,35(04):365-369. DOI： 10.15980/j.tzzz.2015.04.009.

Xu Ting, Zhang Lihua, Li Xiaoqian, et al. Numerical Simulation of Fluid-thermal Coupling Field of Tundish in Static Magnetic Field. [J]. Special Casting & Nonferrous Alloys 35(4):365-369(2015) DOI： 10.15980/j.tzzz.2015.04.009.

摘要

通过对单流板坯连铸中间包内流场与传热耦合的数值模拟

研究了铸坯在不同拉速下的中间包内钢水平均停留时间分布

同时利用电磁流体力学（MHD）研究了在不同强度的稳恒磁场下

中间包内钢水的流动情况。结果表明

合理地降低铸坯拉速

增强磁感应强度

均能延长钢水的平均停留时间。与钢水流动速度相反的电磁力的制动作用

改变了流场分布

减少了钢水对中间包壁的冲击

使上表面钢水流动更加平缓

同时引起的钢水温降不明显。当磁感应强度为0.10T时

出口钢水的平均温度下降0.46K;改变磁感应强度

模拟发现在0.10

.15T范围内时

效果更理想。

Abstract

Based on numerical simulation of fluid-thermal coupling field of a one-strand slab tundish

the average residence time of liquid steel was analyzed at different slab casting speeds

and under static magnetic fields with different intensity

the liquid steel flow was also investigated according to the electromagnetic hydrodynamics（MHD）.The results show that both reasonable lower casting speed and the stronger magnetic field can postpone the average staying time of the liquid steel.With the action of the electromagnetic force which is in contrast to the velocity of the liquid steel

the distribution of the flow field is changed

thus reducing the impaction to the tundish wall

so the upper surface of the molten steel can be flown more smoothly

however

the decrease of temperature of the steel is slight.The average temperature at the outlet is decreased by 0.46 K when the magnetic intensity is 0.10 T.Through changing magnetic field intensity

it is found that the combined effect exhibits desirable in the range of0.10

.15 T.