薄板坯连铸浸入式三孔水口热流耦合数值模拟

王迎春; 张立; 徐荣军; 徐红伟; 方园

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薄板坯连铸浸入式三孔水口热流耦合数值模拟
Thermo-flow Coupled Model for Nozzle with Three Ports in Continuous Casting Thin Slab
2008年第8期页码：631-634
纸质出版日期： 2008 ，
DOI：

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[1]王迎春,张立,徐荣军,徐红伟,方园.薄板坯连铸浸入式三孔水口热流耦合数值模拟[J].特种铸造及有色合金,2008(08):631-634+573.

Wang Yingchun, Zhang Li, Xu Rongjun, et al. Thermo-flow Coupled Model for Nozzle with Three Ports in Continuous Casting Thin Slab[J]. Special Casting & Nonferrous Alloys, 2008,(8):631-634.
[1]王迎春,张立,徐荣军,徐红伟,方园.薄板坯连铸浸入式三孔水口热流耦合数值模拟[J].特种铸造及有色合金,2008(08):631-634+573. DOI：

Wang Yingchun, Zhang Li, Xu Rongjun, et al. Thermo-flow Coupled Model for Nozzle with Three Ports in Continuous Casting Thin Slab[J]. Special Casting & Nonferrous Alloys, 2008,(8):631-634. DOI：

摘要

通过质量方程、运动方程和能量方程

利用热流耦合方法建立薄板坯连铸三孔水口温度场和流场数值模型

对内部钢液的速度场和温度场进行耦合研究

分析连铸过程三孔水口流场和温度场的基本特征

讨论流场与温度场分布对铸坯品质的影响。同时研究了浸入水口浸入深度与拉坯速度对其形态的影响

结果发现

由于模截面上两个回流以及向下出孔的存在

不同于两孔水口

形成两个先期凝固点和三个后期凝固点

为优化结晶器内钢液流场

优化浇注参数设计提供理论依据。

Abstract

An mathematical model for nozzle with three ports in continuous casting thin slab was established by coupling thermo-flow method based on mass equation

movement equation and energy equation of liquid steel in mould to simulate velocity field and temperature field in liquid steel. The main features of flow field and temperature field in nozzle with three ports during continuous casting were described to analyze effects on quality of billet. Meanwhile

the effects of immersing depth of nozzle and casting speed on the meniscus shape of liquid steel were understood to optimize flow field and pouring parameters of liquid steel in mould.