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首页> 外文期刊>ISIJ international >Additional Information on 'Fluid Flow Character-ization in Asymmetric Tundish' by Cui, Liu and Li
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Additional Information on 'Fluid Flow Character-ization in Asymmetric Tundish' by Cui, Liu and Li

机译：崔，刘和李关于“不对称中间包中的流体流动特性”的附加信息

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摘要

Cui et al. proposed a methodology for the fluid flow characterization of asymmetric tundishes that does not rely on any idealized flow model. First, the E curves of each tundish strand is obtained through the pulse input experiment. Subsequently, the E curves are converted into F curves by integration. Then, the dead volume fraction of the entire tundish (V_d/V) is calculated so as to evaluate the overall tundish performance. Finally, the flow uniformity among tundish strands is assessed through quantities obtained from the strand F curves (i.e. maximum difference between strand F curves for two-strand tundishes or maximum standard deviation among strand F curves for multi-strand tundishes). In the present work, the calculation procedure for the methodology of Cui et al. is discussed in detail. It was identified a problem in the obtention of F curve by Cui et al. that modified the actual formulas of V_d/V. In addition, this work presents new equations that facilitate the calculation of V_d/V when physical and mathematical models are employed. Moreover, the most convenient definition of the dead volume fraction is studied. It was found that V_d/V can distinguish different flows more effectively if it is based on one dimensionless residence time rather than two. Furthermore, some parameters for assessing the flow uniformity among tundish strands were compared. The area metric described by Oberkampf and Roy is the recommended one.
机译：崔等。提出了一种不依赖于理想流模型的非对称隧道流体流动特性的方法。首先，通过脉冲输入实验获得每个中间包链的E曲线。随后，通过积分将E曲线转换为F曲线。然后，计算整个中间包的死体积分数（V_d / V），以便评估整体中间包性能。最后，通过从丝束F曲线获得的量来评估中间包丝束之间的流动均匀性（即，对于两股通道的束丝F曲线之间的最大差异或对于多股通道丝束F曲线之间的最大标准偏差）。在目前的工作中，崔等人的方法论的计算程序。详细讨论。 Cui等人发现在F曲线的观察中存在问题。修改了V_d / V的实际公式。此外，这项工作提出了新的方程，当采用物理和数学模型时，这些方程有助于计算V_d / V。而且，研究了死体积分数的最方便的定义。已经发现，如果V_d / V基于一个无因次停留时间而不是基于两个无因次停留时间，则可以更有效地区分不同的流。此外，比较了用于评估中间包钢绞线之间流动均匀性的一些参数。建议使用Oberkampf和Roy描述的面积度量。

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  • 来源
    《ISIJ international》 |2018年第10期|1953-1955|共3页
  • 作者

  • 作者单位

    Department of Metallurgical and Materials Engineering School of Engineering Federal University of Minas Gerais Ave. Presidente Antonio Carlos No. 6627 Belo Horizonte 31270-901 Brazil;

  • 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

    asymmetric tundish; multi-strand tundish; water model; mathematical simulation; residence time distribution;

    机译：不对称中间包;多头中间包水模型数学模拟停留时间分配;

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