2021 Nashville AISTech

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Mathematical Modeling of Residence Time Distribution in a Twin-Strand Slab Caster Tundish (Room Virtual)

The residence time of liquid steel inside the continuous casting tundish and fraction of dead volume affect the probability of the non-metallic inclusion flotation and removal, as well as the final steel product quality. In order to optimize the flow patterns using different flow control devices, a computational fluid dynamics model was developed to predict the resistance temperature device curves using a user-defined scalar model, and the dead volume percentages were then calculated for different casting conditions. The removal rate of non-metallic inclusions was also predicted by developing a discrete phase model to compute the inclusion trajectories and residual ratio of inclusions.