方坯连铸内外复合冷却流场温度场耦合数值模拟

李朗

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方坯连铸内外复合冷却流场温度场耦合数值模拟
Numerical Simulation of Continuous Casting Slab in Inner-outer Cooling with Flow Field Coupled with Temperature Field
2008年第9期页码：680-682
纸质出版日期： 2008 ，
DOI：

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[1]李朗.方坯连铸内外复合冷却流场温度场耦合数值模拟[J].特种铸造及有色合金,2008(09):680-682+652-653.

Li Lang. Numerical Simulation of Continuous Casting Slab in Inner-outer Cooling with Flow Field Coupled with Temperature Field[J]. Special Casting & Nonferrous Alloys, 2008,(9):680-682.
[1]李朗.方坯连铸内外复合冷却流场温度场耦合数值模拟[J].特种铸造及有色合金,2008(09):680-682+652-653. DOI：

Li Lang. Numerical Simulation of Continuous Casting Slab in Inner-outer Cooling with Flow Field Coupled with Temperature Field[J]. Special Casting & Nonferrous Alloys, 2008,(9):680-682. DOI：

摘要

针对165mm×165mm的Q235方坯连铸

提出了一种钢水内外复合冷却技术

即在"结晶器内设置内冷却器-U型管"

起到提高传热效率的目的。采用CFD商用软件Fluent

就内外复合冷却结晶器内钢水在流场温度场耦合作用下的状况进行数值模拟。结果表明

内冷却器可以提高传热效率进而加快连铸坯的凝固速度

并且减少了注流的回流速度

使钢水的流动均匀

从而提高了连铸方坯的品质。

Abstract

A inner-outer compound cooling method that set a U shape cooling pipe in mould was employed for improving heat transferring efficiency in continuous casting Q2351 slab with 165mm in size. The filling process of liquid steel in mould with inner-outer compound cooling water was simulated by CFD software based on flow field coupling with temperature field. The simulated results show that inner-cooler can promote the solidification speed of continuous casting billet and decrease the flow-back velocity of poured liquid steel as a result of improving heat transferring efficiency

and the flow of liquid steel was homogenized to improve the quality of billet.