低拉速板坯结晶器自由液面控流的数值模拟

褚绍阳; 赵志刚; 仇圣桃; 张桂芳

doi:10.15980/j.tzzz.2017.07.018

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低拉速板坯结晶器自由液面控流的数值模拟
Numerical Simulation on Free Surface in the Mold of Slab Continuous Caster at Low Casting Speed with MFCD
2017年37卷第7期页码：755-759
纸质出版日期： 2017 ，
DOI： 10.15980/j.tzzz.2017.07.018

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[1]褚绍阳,赵志刚,仇圣桃,张桂芳.低拉速板坯结晶器自由液面控流的数值模拟[J].特种铸造及有色合金,2017,37(07):755-759.

Chu Shaoyang, Zhao Zhigang, Qiu Shengtao, et al. Numerical Simulation on Free Surface in the Mold of Slab Continuous Caster at Low Casting Speed with MFCD[J]. Special Casting & Nonferrous Alloys, 2017,37(7):755-759.
[1]褚绍阳,赵志刚,仇圣桃,张桂芳.低拉速板坯结晶器自由液面控流的数值模拟[J].特种铸造及有色合金,2017,37(07):755-759. DOI： 10.15980/j.tzzz.2017.07.018.

Chu Shaoyang, Zhao Zhigang, Qiu Shengtao, et al. Numerical Simulation on Free Surface in the Mold of Slab Continuous Caster at Low Casting Speed with MFCD[J]. Special Casting & Nonferrous Alloys, 2017,37(7):755-759. DOI： 10.15980/j.tzzz.2017.07.018.

摘要

基于流体力学

利用Fluent软件建立了连铸结晶器内钢水流动的三维数学模型

采用k-ε双方程高雷诺数湍流模型对板坯结晶器内的流场进行了模拟

研究了低拉速时结晶器控流装置对不同结构参数的水口条件下自由液面流场及温度场的影响。结果表明

结晶器流动控制装置（MFCD）对结晶器自由液面的影响与浸入式水口结构有关;1号水口条件下MFCD的加入可以降低自由液面的湍动能

2号水口条件下MFCD的加入增加了自由液面的湍动能。结晶器流动控制装置（插入深度50mm、100mm）并不适用于低拉速（0.55m/min）条件下的板坯连铸。

Abstract

In order to understand influence of mold flow control device（MFCD）on mold free surface at low casting speed

based on the calculation theory of fluid mechanics

the 3D-mathmatical model of fluid flow in the continuous casting mold was established by the Fluent-software.The fluid flow in mould for slab continuous casting has been simulated using model of k-εhigh Re equation.Under the conditions of different structural submerged entry nozzle

the effects of MFCD on mold free surface（temperature field and flow field）has been analyzed at low casting speed.The results show that effects of MFCD on mold free surface is related with submerged entry nozzle structure.The MFCD can reduce the turbulent kinetic energy of the free surface under the conditions of the 1submerged entry nozzle

while it can increases the turbulent kinetic energy under the conditions of the 2submerged entry nozzle.The MFCD（insertion depth of 50、100mm）is not feasible for slab continuous casting at low casting speed（0.55m/min）.