Heat transfer and fluid flow phenomena in electroslag refining
Heat transfer and fluid flow phenomena in electroslag refining
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DOI：
10.1007/bf02673432
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发表时间：
1978
期刊：
影响因子：
--
通讯作者：
A. H. Dilawari;J. Szekely
中科院分区：
文献类型：
--
作者：
A. H. Dilawari;J. Szekely
建立了电渣重熔装置中电磁力场、流体流动和传热的数学模型。在制定中，津贴已被电磁驱动的流动和自然对流;此外，在考虑传热的移动液滴的影响已被考虑在内。计算结果表明，尽管自然对流确实影响环流模式，但电磁力场似乎是流体运动更重要的驱动力。通过渣的液滴的运动中起着重要的作用，在运输热能从渣到熔融金属池，虽然液滴是不太可能有明显的贡献渣-金属的传质这里提出的形式，使预测的热和流体流动现象的ESR单位，并可用于计算电极熔化率从第一原理。虽然尚未对基于模型的预测和实际工厂规模测量进行详细比较，但认为理论预测与可用的工厂规模数据一致。
A mathematical formulation has been developed to represent the electromagnetic force field, fluid flow and heat transfer in ESR units. In the formulation, allowance has been made for both electromagnetically driven flows and natural convection; furthermore, in considering heat transfer the effect of the moving droplets has been taken into account. The computed results have shown that the electromagnetic force field appears to be the more important driving force for fluid motion, although natural convection does affect the circulation pattern. The movement of the liquid droplets through the slag plays an important role in transporting thermal energy from the slag to the molten metal pool, although the droplets are unlikely to contribute appreciably to slag-metal mass transfer The for-formulation presented here enables the prediction of thermal and fluid flow phenomena in ESR units and may be used to calculate the electrode melting rates from first principles. While a detailed comparison has not yet been made between the predictions based on the model and actual plant scale measurements, it is thought that the theoretical predictions are consistent with the plant-scale data that are available.