Based on residue time distribution (RTD)curve of analysis model for one-strand tundish,a new analysis model was proposed to analyze the flow characteristics of multi-strand tundish.The effect of inconsistent flow a-mong each strand on flow characteristics was considered in this model.This new method avoids the defects of tra-ditional combined model effectively,and the sum of the volume ratio of short circuit flow,plug flow,mixing flow and dead region for each strand is 100%,which is in conformity with the practical situation.The model chooses the standard deviations of short circuit flow volume,plug flow volume,mixing zone and dead zone volume as the key parameters to estimate the similarity of flow characteristics of each strand.Combined with orthogonal design experiment,the flow field of eight-strand combined tundish is optimized.The results show that the optimal flow control device for eight-strand combined tundish is the combination of low porous,low dam and basin-shaped lur-bulence inhibitor.
multi-strand tundishRTD curvecontrol deviceflow characteristicanalysis model
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NSTL
维普
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