Modeling of Fluid Flow and Residence-Time Distribution in a Five-Strand Tundish

Modeling of Fluid Flow and Residence-Time Distribution in a Five-Strand Tundish

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Quantified residence-time distribution (RTD) provides a numerical characterization of mixing in the continuous solo jec 10 casting tundish-thus allowing the engineer to better understand the metallurgical performance of the reactor.This study describes a computational fluid dynamic (CFD) modeling study for analyzing the flow pattern and the residence-time distribution in a five-strand tundish.Two passive scalar-transport equations were applied to separately calculate the E-curve and F-curve in the tundish.The numeric modeling result were compared to water-modeling results to validate the mathematical model.

The volume fraction of different flow regions (plug, mixed and dead) and the intermixing time during 14-dq5145cl the ladle changeover were calculated to study the effects of the flow control device (FCD) on the tundish performance.From the results of CFD calculations, it can be stated that a combination of the U-baffle with deflector holes and the turbulence inhibitor had three major effects on the flow characteristics in the tundish: (i) to reduce the extent of the dead volume; (ii) to evenly distribute the liquid streams to each strand and (iii) to shorten the intermixing time during the ladle changeover operation.