Study on fluid flow in the mold with electromagnetic braking

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Multiphase flow control w ith electromagnetic braking( EMBr) is w idely used in the continuous casting of steel slabs. The basic aim of the flow control system of the process is to deliver molten steel from the ladle through the tundish,upper tundish nozzle,slide gate,and submerged entry nozzle into the mold region w ith minimal defects. This requires the optimization of turbulence levels at a meniscus to avoid both an excessively fast flow( which creates high fluctuations of the meniscus level in addition to slag entrapment,surface nonuniformities,and surface defects) and insufficient slow flow( w hich leads to meniscus solidification,inadequate flux infiltration,and surface defects). In this study,a Eulerian-Lagrangian approach is used to investigate the effects of EM Br and Ar bubble injection on the surface flow velocity. The results show that high Ar injection rates can lead to an increase in surface velocity. Multiphase flow control w ith electromagnetic braking (EMBr) is w idely used in the continuous casting of steel slabs. The basic aim of the flow control system of the process is to deliver molten steel from the ladle through the tundish, upper tundish nozzle, slide gate, and submerged entry nozzle into the mold region w ith minimal defects. This requires the optimization of turbulence levels at a meniscus to avoid both an excessively fast flow (which creates high fluctuations of the meniscus level in addition to the slag entrapment, surface nonuniformities, and surface defects) and insufficient slow flow (w hich leads to meniscus solidification, inappropriate flux infiltration, and surface defects). In this study, a Eulerian-Lagrangian approach is used to investigate the effects of EM Br and Ar bubble injection on the surface The results show that high Ar injection rates can lead to an increase in surface velocity.
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