Multiphase Flow Modeling of Slag Entrainment During Ladle Change-Over Operation

Mathematical Modelling of the Effects of Transient Phenomena on Steel Cleanness during Tundish Transfer Practices

“…Validation is an essential stage of multiphase mathematical modelling in order to trust the numerical results. To achieve this point, a one third scale water model was previously built, where a water-oil-air system was employed to study the transient period of the ladle change-over operation; 14) then, using the same multiphase system, a mathematical model was developed using CFD techniques in order to understand and to analyse in more detail the transient phenomena of the oil emulsification and the oil aperture. 15) The results of these works have demonstrated that the present mathematical model predicts with good accuracy these phenomena allowing the model validation and to continue to the next stage where the real multiphase steel-slag-air system is considered.…”

Review, Analysis, and Modeling of Continuous Casting Tundish Systems

“…Solorio‐Diaz et al and Morales et al have also developed two and three phase computational models of flows in ladle shroud and tundish systems. In earlier work, tracer dispersion and particulate (inclusion) motion were investigated in a scaled water model of a combined shroud–tundish geometry at steady state under non‐isothermal condition in which, discrete phase (inclusion) motion was computed through DPM.…”

“…The objective was to design a dissipative ladle shroud leading to superior inclusion removal from tundish. In the subsequent work, the authors developed a transient, three phase, VOF model to investigate slag entrainment during ladle change over operation. Qualitatively, it was demonstrated that slag entrainment phenomena can be modeled reasonably well via the VOF calculation procedure.…”

“Vacuum Shroud (VS)”-A Green Flow Control Device (FCD) towards Replacement of “Turbo Stop” In Tundish Metallurgy

“…Not only conventional shroud and turbostop as seen from the Figure 2 (a), some researchers have tried to compare the effect of other flow control device like baffles and dams incorporation with impact pad to control the flow pattern in tundish in comparison to bare tundish as well [23]. Dissipative ladle shroud shown in the diagram Figure 2 (b) is a relatively new technology recently developed by few metallurgists to avoid turbulent related problems in the so called metallurgical vessel tundish and physical modeling, mathematical modeling as well as particle image velocimetry have been employed to see the insight and performance of this new device which have been compared to the performance of commonly used conventional shroud, as a results shows sufficient open eye formation, slag emulsification generation, air entrapment for both cases during ladle change over period [4,7,24]. Long nozzle with bell type shroud and trumpet shaped shroud as embodied in Figure 2 (c) have been used by few steelmaking industry to decrease re-oxidation and nucleation of detrimental macro inclusions [3,9].…”