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首页> 外文期刊>ISIJ international >Some Considerations Concerning Empirical Correlations for Plume (Spout) Eye Area in Slag Covered Metallic Melts
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Some Considerations Concerning Empirical Correlations for Plume (Spout) Eye Area in Slag Covered Metallic Melts

机译：关于熔渣覆盖金属熔体中羽状（喷口）孔眼面积经验相关性的一些考虑

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摘要

The adequacy and appropriateness of empirical correlations for exposed spout area in ladle metallurgy steelmaking operations have been re-analysed. It is suggested that Froude number for gas stirred ladle system) is better rep-resented by U_p~2/gh rather than by Q~2/gH~5, as the former definition leads to more meaningful ratios between inertial to gravitational forces in the system. Justifications are provided to suggest that the entire range of experimental conditions investigated by Yonezawa and Schwerdtfeger may not necessarily correspond to the inertial and gravitational force (e.g., Froude) dominated flow regime. Using appropriate discrimination criteria available within the literature, experimental conditions likely to be dominated by Froude number were identified. Based on such, it was shown that experimentally measured plume eye areal can indeed be characterized in terms of an appropriately defined "ladle Froude number (Fr =U_p~2/gh). Finally, it is pointed out that a single correlation between plume eye area and Froude number, irrespective of vessel sizes and gas liquid systems, cannot be justified from a fundamental stand point.
机译：重新分析了钢包冶金炼钢操作中暴露出的喷口面积的经验相关性的充分性和适当性。建议气体搅拌钢包系统的弗洛德数最好用U_p〜2 / gh而不是Q〜2 / gH〜5来表示，因为前一种定义导致惯性和重力之间的比值更有意义。系统。提供的理由表明，米泽和施韦特费格研究的整个实验条件范围不一定与惯性和重力（例如，弗洛德）为主。使用文献中可用的适当判别标准，确定了可能由弗洛德数主导的实验条件。基于此，表明可以通过适当定义的“ lad弗洛德数（Fr = U_p〜2 / gh）来表征实验测量的羽眼面积。最后，指出了羽眼之间的单个相关性。从根本上讲，无论容器大小和气液系统如何，都无法证明其面积和弗洛德数是合理的。

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  • 来源
    《ISIJ international》 |2003年第12期|p.2076-2078|共3页
  • 作者

    D. MAZUMDAR; J. W. EVANS;

  • 作者单位

    Department of Materials & Metallurgical Engineering, Indian Institute of Technology, Kanpur, 208016, India;

  • 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 黑色金属材料;
  • 关键词

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