3D CFD Modeling of the LMF System

Nastac, Laurentiu; Zhang, Daojie; Cao, Qing; Pitts, April; Williams, Robert

doi:10.1002/9781119274681.ch23

Cited by 4 publications

(5 citation statements)

References 8 publications

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“…In our previous work, 14 the three-phase flow characteristics were shown to be successfully described by our CFD model. Figure 2 a shows the predicted open slag eyes.…”

Section: Resultsmentioning

confidence: 78%

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Numerical modelling of fluid flow and desulphurisation kinetics in an argon-stirred ladle furnace

Cao

Pitts

Nastac

2016

Ironmaking & Steelmaking

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A full-scale, three-dimensional, transient CFD modelling approach capable of predicting the threephase fluid-flow characteristics and desulphurisation behaviour in an argon-stirred ladle was developed. The model can accurately predict the molten steel flow and slag eye behaviour. The predicted sulphur content in ladle as a function of time agrees well with the experimental data. The effects of the initial sulphur content, the gas flow rate and the slag layer thickness on the desulphurisation efficiency were also investigated. The predicted results show that the desulphurisation efficiency improves with the increase of the initial sulphur content, the gas flow rate and the slag layer thickness. Higher gas flow rate can improve the slag-steel interaction, which, in turn, helps improving the desulphurisation rate. The thinner the slag layer, the larger the slag eyes and the smaller the interfacial area between the slag and steel phases. The consequence is the decrease in the desulphurisation rate.

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“…In our previous work, 14 the three-phase flow characteristics were shown to be successfully described by our CFD model. Figure 2 a shows the predicted open slag eyes.…”

Section: Resultsmentioning

confidence: 78%

“…The CFD model consists of the multiphase VOF, energy and species transfer models as well as the k-epsilon realisable turbulence model with standard wall functions in ANSYS Fluent. 13 A detailed description of this CFD model can be found in Nastac et al 14…”

Section: Cfd Modelmentioning

confidence: 99%

Numerical modelling of fluid flow and desulphurisation kinetics in an argon-stirred ladle furnace

Cao

Pitts

Nastac

2016

Ironmaking & Steelmaking

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“…The realizable k – ε turbulence model is chosen to account for the multiphase turbulence flow. A more detailed description can be found in the literature [19].…”

Section: Model Descriptionmentioning

confidence: 99%

“…Initially, the slag layer rests on the top of the steel bath, and the inclusions are supposed to be uniformly distributed in the bulk steel. The argon gas is injected from the bottom plugs and the injected velocity is calculated based on the gas flow rate, Q g [19]. The pressure outlet boundary condition is used at the top surface of the ladle, where the gas bubbles are allowed to escape.…”

Section: Model Descriptionmentioning

confidence: 99%

Numerical modelling of the transport and removal of inclusions in an industrial gas-stirred ladle

Cao

Nastac

2018

Ironmaking & Steelmaking

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A full-scale, three-dimensional, transient CFD modelling approach capable of predicting the threephase fluid flow characteristics and the inclusion removal in a gas-stirred ladle was developed. The comparison with experimental data indicates that this model can accurately predict the multiphase fluid flow and slag eye behaviour. The transport and removal of the inclusions in the gas-stirred ladle were predicted by tracing the movement of individual inclusions through computing their particle trajectories and considering a fluctuant top slag layer. The effects of inclusion size, gas flow rates, and injected bubble diameters as well as various removal mechanisms including slag capture, bubble attachment, and ladle wall adhesion on the removal of inclusions were investigated. It is shown that the slag capture is the prevailing mechanism for inclusion removal and the gas flow rate is the most important parameter for enhancing the inclusion removal efficiency.

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“…This type of modelling is a useful tool, as the results achieved on the model can predict real system behavior during various process changes. Comparing the results of physical and numerical modelling is an effective and optimal variant of model research [2, [23][24][25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

Physical Experiments and Numerical Simulations of the Influence of Turbulence Inhibitors and the Position of Ladle Shroud on the Steel Flow in an Asymmetric Five-Strand Tundish

Walek,

Tkadlečková,

Velička

et al. 2023

Metals

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The submitted article deals with the use of physical and numerical modelling to study the process of the steel flow in an asymmetric five-strand tundish that continuously casts steel. For the purposes of physical modelling, a 1:4-scale plexiglass model was used as the operating tundish, and for numerical modelling, the geometry of the operating tundish was created on a 1:1 scale. A model liquid (water) was used in the physical modelling of the melt flow process, while liquid steel was used as the standard flowing medium in the numerical modelling. We assessed the relevant operating parameters influencing the characteristics of the flow of the bath in the tundish—the shape of the turbulence inhibitor, the position of the ladle shroud in relation to the turbulence inhibitor and the distance between the ladle shroud orifice and the bottom of the turbulence inhibitor. The preliminary results show that optimal steel flow characteristic results are achieved by using the TI3-C configuration. The results from both modelling methods achieved the same characteristics, therefore verifying the results of each other and demonstrating that when taken together, the results of physical and numerical modelling can be considered sufficiently informative.

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3D CFD Modeling of the LMF System

Cited by 4 publications

References 8 publications

Numerical modelling of fluid flow and desulphurisation kinetics in an argon-stirred ladle furnace

Numerical modelling of fluid flow and desulphurisation kinetics in an argon-stirred ladle furnace

Numerical modelling of the transport and removal of inclusions in an industrial gas-stirred ladle

Physical Experiments and Numerical Simulations of the Influence of Turbulence Inhibitors and the Position of Ladle Shroud on the Steel Flow in an Asymmetric Five-Strand Tundish

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