薄板坯连铸凝固过程及溶质偏析的三维耦合数值模拟

李中原; 赵九洲

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薄板坯连铸凝固过程及溶质偏析的三维耦合数值模拟
Coupled Numerical Simulation of Solidification and Solute Transfer in Thin Slab in Continuous Casting
2006年第3期页码：150-153
纸质出版日期： 2006 ，
DOI：

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[1]李中原,赵九洲.薄板坯连铸凝固过程及溶质偏析的三维耦合数值模拟[J].特种铸造及有色合金,2006(03):150-153+126.

Li Zhongyuan~ 1, 2. Coupled Numerical Simulation of Solidification and Solute Transfer in Thin Slab in Continuous Casting[J]. Special Casting & Nonferrous Alloys, 2006,(3):150-153.
[1]李中原,赵九洲.薄板坯连铸凝固过程及溶质偏析的三维耦合数值模拟[J].特种铸造及有色合金,2006(03):150-153+126. DOI：

Li Zhongyuan~ 1, 2. Coupled Numerical Simulation of Solidification and Solute Transfer in Thin Slab in Continuous Casting[J]. Special Casting & Nonferrous Alloys, 2006,(3):150-153. DOI：

摘要

采用基于体积平均的有限控制体法

对Fe-C二元合金薄板坯连铸凝固过程进行了紊流流动、凝固及溶质传输的三维耦合数值模拟。计算结果表明

钢液的紊流流动显著改变了薄板坯内温度场形状及溶质浓度的分布。浸入式水口产生的射流对铸坯宽面的冲刷造成了凝固坯壳厚度沿宽面的不均匀分布。同时分析了宏观偏析的形成及可能形成的位置。

Abstract

Based on the control-volume method

a 3-D coupled model has been developed for binary iron-carbon alloy to describe the turbulent fluid flow

heat transfer

solidification

and solute redistribution in the thin slab in continuous casting. Calculated results show that the turbulent fluid flow intensively alters the shapes of temperature field and the solute distribution in thin slab. The impact of flow jet from immersed nozzle on broad face of the thin slab is responsible for un-even distribution of solidified shell thickness along broad face. The formation mechanism and potential position of macro-segregation are analyzed.