Modeling Study of Turbulent Flow in a Continuous Casting Slab Mold Comparing Three Ports SEN Designs

Calderon-Ramos, Ismael; Morales, R. D.; Servin-Castañeda, Rumualdo; Pérez-Alvarado, Alejandro; Garcia-Hernandez, Saul; Barreto, José de Jesús; Arreola-Villa, Sixtos Antonio

doi:10.2355/isijinternational.isijint-2018-504

Cited by 18 publications

(5 citation statements)

References 16 publications

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“…ere are, however, differences in the influence that each of these geometric properties has on the flow pattern of liquid steel inside the nozzle and within the mold. For example, Calderon-Ramos et al (2019) [4] studied the effect of both the transverse shape of the exit ports and the angle of inclination of the ports. ey showed that the square-shaped ports produce symmetric and slow jets.…”

Section: Introductionmentioning

confidence: 99%

“…In order to numerically reproduce the flow pattern of the SEN, RANS and LES turbulence models were used previously to reproduce the internal flow pattern of the SEN [4,12,13]. In these works, it is possible to observe that RANS models could reproduce the average flow pattern; however, they do not obtain the transient dynamic flow behavior [2, 5-7, 9, 14-19].…”

Section: Introductionmentioning

confidence: 99%

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Hydrodynamic Analysis of the Flow inside the Submerged Entry Nozzle

Gonzalez-Trejo

Real-Ramirez

Carvajal-Mariscal

et al. 2020

Mathematical Problems in Engineering

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The quality of steel produced by continuous casting depends mainly on the characteristics of the liquid steel flow pattern within the mold. This pattern depends on the flow dynamics of the nozzle that is immersed in liquid steel. This work characterizes the fluid dynamics within two separate submerged entry nozzle models with a square cross section bore. The Froude similarity criterion and water as working fluid have been used. The models consist of a square-shaped tube with one inlet and two lateral squared exits at the bottom. To enhance the flow visualization, the models do not have exit ports. Moreover, one of the models has a “pool,” a volume at the bottom, and the other prescinds of it. The geometrical parameters and operational conditions of physical experiments were reproduced in the numerical simulations. The turbulence model used in this work is large eddy simulation (LES) with dynamic k-equation filtering. It was found that transient numerical simulations reproduce the dynamic nature of the internal flow pattern seen in physical experiments. The results show that the flow pattern within the pool nozzle is defined by only one large vortex; on the other hand, in the nozzle, without the pool, the flow pattern achieves a complex behavior characterized by two small vortexes. This study will allow to build nozzles that produce a symmetric, regular fluid flow pattern inside the mold, which leads to improvements on the process such as low energy consumption and finally in cost reductions.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Hydrodynamic Analysis of the Flow inside the Submerged Entry Nozzle

Gonzalez-Trejo

Real-Ramirez

Carvajal-Mariscal

et al. 2020

Mathematical Problems in Engineering

View full text Add to dashboard Cite

show abstract

“…affected by the slab width, 1,[11][12][13] casting speed, 3,11,12,14) argon flow rate, [15][16][17] submergence depth of SEN, 1,3,13) SEN bottom well type, [18][19][20] SEN outport angle 21,22) and shape, [23][24][25] and electromagnetic stirring. 26,27) The characteristic parameters of the molten steel flow inside the mold included the jet angle, asymmetric flow, vortex center position in the recirculation zone, top surface profile, and top surface velocity distribution.…”

Section: Prediction Study On Vortex Center Position and Surface Veloc...mentioning

confidence: 99%

Prediction Study on Vortex Center Position and Surface Velocity in a Steel Continuous Casting Slab Strand Using Mathematical Modeling

Zhou

Deng

et al. 2022

ISIJ Int.

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“…[6,7] The functions of the SEN include preventing liquid steel from spattering and improving the billet temperature and flow-field distribution. [8,9] Zhang et al [10] studied the effect of SEN-type on flow, heat transfer, and solidification in the mould and found that the shell thickness of the straight SEN was the thickest in the mould zone but became thinner beyond 0.9 m from the meniscus. The temperature and solidification shell distributions were similar for two-port SEN and four-port SEN. Gan et al [11] analyzed the oval exit SEN and rectangular exit SEN and found that the former was superior to the latter in stabilizing the meniscus and reducing the incidence of slag entrapment.…”

Section: Introductionmentioning

confidence: 99%

Effect of Nozzle Position on Fluid Flow and Solidification in a Billet Curved Mould using Mould Electromagnetic Stirring

Wang

Qiu

Zhu

et al. 2023

steel research int.

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Owing to the smaller cross-sectional size of the billet, the effect of the position of the submerged entry nozzle (SEN) on the fluid flow in a curved mold is more prominent. The transient fluid flow, heat transfer, and solidification behavior at different nozzle positions and mold electromagnetic stirring (M-EMS) are investigated using a 3D transient mathematical model. The symmetry index, S, is introduced to quantitatively evaluate the symmetry of the flow field. When the SEN is offset to the outer curve, S is the highest, the flow field mixing is the best, and the liquid level fluctuation is minimal. When the SEN is offset to the inner curve, S is the lowest, and the washing of the solidified shell on the inner curve side is more significant, causing the solidified shell thickness on the inner curve to be thinner, which can easily cause steel breakout accidents. The M-EMS can improve the uneven flow field caused by the nozzle position. In actual production, the SEN can be appropriately offset to the outer curve, and the application of M-EMS can improve the flow field distribution of molten steel.

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Modeling Study of Turbulent Flow in a Continuous Casting Slab Mold Comparing Three Ports SEN Designs

Cited by 18 publications

References 16 publications

Hydrodynamic Analysis of the Flow inside the Submerged Entry Nozzle

Hydrodynamic Analysis of the Flow inside the Submerged Entry Nozzle

Prediction Study on Vortex Center Position and Surface Velocity in a Steel Continuous Casting Slab Strand Using Mathematical Modeling

Effect of Nozzle Position on Fluid Flow and Solidification in a Billet Curved Mould using Mould Electromagnetic Stirring

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