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The Physical and Mathematical Modelling of Continuous Casting Tundish Systems

机译:连铸中间包系统的物理和数学建模

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Considerable efforts have been made in academia and industry over the last two decades to fully exploit and enhance the metallurgical performance of continuous casting tundish systems. Towards these goals, numerous physical an mathematical modelling studies embodying both industrial and water model tundishes have been carried out and reported in the literature. Based on an extensive literature search, we now present a summary, discussion and analysis of these. For the sake of convenience and clarity of presentation, the studies have been categorised into three major groups: (1) physical modelling (2) mathematical modelling and (3)combined physical and mathematical modelling. In each of these categories, a great number of publication on various aspects of tundish metallurgy, such as, modelling criteria, turbulent fluid flow, residence time distributions (RTD), inclusion transport and separation, heat loss and temperature drop, grade transition and intermixing, etc. have been reported. These works have lead to considerable improvements in our understanding of the various transport processes (viz, RTD, inclusion float out, thermal energy transport, etc.) associated with tundish operations. Comprehensive and sufficiently reliable mathematical models are also currently available and these also allow one to carry out full scale predictions and useful engineering design and process calculations. None the less, certain obscurities and uncertainties remain. These are reviewed together with suggestions of areas where further research is needed.
机译:在过去的二十年中,学术界和工业界做出了相当大的努力,以充分利用和提高连续铸造中间包系统的冶金性能。为了实现这些目标,已经进行了许多包含工业和水模型隧道的物理和数学建模研究,并在文献中进行了报道。在广泛的文献搜索基础上,我们现在对它们进行总结,讨论和分析。为了方便和清楚地表述,将研究分为三大类:(1)物理建模(2)数学建模和(3)物理和数学组合建模。在这些类别中的每一个类别中,都有大量关于中间包冶金学各个方面的出版物,例如建模标准,湍流,停留时间分布(RTD),夹杂物的传输和分离,热损失和温度下降,梯度转变和混合,等等。这些工作极大地提高了我们对与中间包操作相关的各种运输过程(即,RTD,夹杂物浮出,热能运输等)的理解。当前还可以使用全面且足够可靠的数学模型,这些模型也使人们可以进行全面的预测以及有用的工程设计和过程计算。但是,仍然存在某些模糊和不确定性。这些内容与需要进一步研究的领域的建议一起进行了审查。

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