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首页> 外文期刊>ISIJ international >Numerical Analysis of Effect of Operation Conditions on Bubble Distribution in Steel Continuous Casting Mold with Advanced Bubble Break-up and Coalescence Models
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Numerical Analysis of Effect of Operation Conditions on Bubble Distribution in Steel Continuous Casting Mold with Advanced Bubble Break-up and Coalescence Models

机译：经营条件对钢连铸模具泡沫分布的影响数值分析

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摘要

Argon bubbles are usually injected into steel continuous casting mold to prevent the clogging of submerged entry nozzle (SEN), but some bubbles may be entrapped to form defects in the final slab. In order to provide a reference for improving the quality of steel, a mathematical model based on the Eulerian-Lagrangian approach with advanced bubble break-up and coalescence models was established to study the effect of operation conditions on bubble distribution in a steel continuous casting mold. A bubble break-up model based on a daughter bubble fraction, which is suitable for the continuous casting system, was considered. The mathematic model was validated by comparing of the size and number of captured bubbles with the plant measurements of previous work. The result shows that argon gas injection has obvious effect on the flow pattern in the upper recirculation zone of the mold. In the upper recir-culation zone, the bubbles mean diameter decreases and the bubble number increases with increasing casting speed, and both of the bubble size and number increase with the increase of gas flow rate. From the result, it can be found that the number and diameter of bubbles arriving at the advancing solidified shell region increase with increasing casting speed. In addition, the increase of gas flow rate causes more bubbles arriving at the advancing solidified shell region, but has little effect on the size of bubbles.
机译：氩气泡通常注入钢连续铸造模具中，以防止浸没物入口喷嘴（SEN）的堵塞，但是可以捕获一些气泡以形成最终板坯中的缺陷。为了提供提高钢材质量的参考，建立了一种基于具有先进气泡分手和聚结模型的欧拉维拉格鸟类方法的数学模型，研究了操作条件对钢连铸模具气泡分布的影响。考虑了基于持续铸造系统的女儿气泡级分的泡泡分手模型。通过比较捕获的气泡与前一项工作的植物测量的捕获气泡的尺寸和数量来验证数学模型。结果表明，氩气注入对模具的上再循环区域中的流动模式具有明显的影响。在上层凝固区中，气泡平均直径降低，气泡数随着铸造速度的增加而增加，并且随着气体流速的增加而增加，气泡尺寸和数量增加。从结果中，可以发现到达前进的凝固壳区域的气泡的数量和直径随着铸造速度的增加而增加。此外，气体流速的增加导致更多的气泡到达前进的凝固壳区域，但对气泡的尺寸几乎没有影响。

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  • 来源
    《ISIJ international》 |2020年第10期|2234-2245|共12页
  • 作者

    Weidong YANG; Zhiguo LUO; Yingjie GU; Zhiyuan LIU; Zongshu ZOU;

  • 作者单位

    School of Metallurgy Northeastern University Shenyang Liaoning 110819 China;

    School of Metallurgy Northeastern University Shenyang Liaoning 110819 China State Key Laboratory of Rolling and Automation Northeastern University Shenyang Liaoning 110819 China Key Laboratory for Ecological of Multimetallic Mineral of Ministry of Ministry of Education Northeastern University Shenyang Liaoning 110819 China;

    School of Metallurgy Northeastern University Shenyang Liaoning 110819 China;

    School of Metallurgy Northeastern University Shenyang Liaoning 110819 China;

    School of Metallurgy Northeastern University Shenyang Liaoning 110819 China State Key Laboratory of Rolling and Automation Northeastern University Shenyang Liaoning 110819 China Key Laboratory for Ecological of Multimetallic Mineral of Ministry of Ministry of Education Northeastern University Shenyang Liaoning 110819 China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    continuous casting mold; Eulerian-Lagrangian model; bubble distribution; bubble coalescence and break-up; daughter size distribution;

    机译：连铸模具;Eulerian-lagrangian模型;泡沫分布;泡泡聚结和分手;女儿尺寸分布;

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