Numerical Modelling of Metal/Flux Interface in a Continuous Casting Mould / Modelowanie Numeryczne Powierzchni Międzyfazowej Metal/Ciekły Żużel W Krystalizatorze Do Ciągłego Odlewania Stali

Jowsa, J.; Bielnicki, M.; Cwudziński, A.

doi:10.1515/amm-2015-0464

Cited by 5 publications

(2 citation statements)

References 15 publications

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“…Therefore, the mold slag entrainment is the object of interest for scientists around the world. Research inplant are difficult to perform (high temperature, lack of phases and equipment transparency), however they can be successfully modeled using computational fluid dynamics [17][18][19] and experiments based on water models. [20][21][22][23][24] Many researchers investigated the mold slag entrainment using a simplified physical models, covering only the upper area of mold.…”

Section: Introductionmentioning

confidence: 99%

Physical Modeling of Mold Slag Entrainment in Continuous Steel Casting Mold with Consideration the Impact of Mold Powder Layer

Bielnicki

Jowsa

2018

steel research int.

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This paper presents the results of laboratory experiments with the usage of water model of continuous steel casting mold for slabs casting. In laboratory experiments, the liquid slag layer is replaced by silicone oil, whereas mold powder layer is replaced by polypropylene particles. The obtained results has been analyzed using a statistical method based on Taguchi assumptions. Critical casting speeds are determined depending on the viscosity of liquid mold slag. Possible mechanisms of slag entrainment are also specified. It is explained, whether taking into account in laboratory experiment the presence of mold powder layer change the entrainment conditions. Based on the obtained results and their discussion it is concluded, that the presence of mold powder should not be ignored in laboratory experiments of continuous steel casting in mold, because to a certain extent it changes the behavior and entrainment conditions of the oil layer.

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Section: Introductionmentioning

confidence: 99%

Physical Modeling of Mold Slag Entrainment in Continuous Steel Casting Mold with Consideration the Impact of Mold Powder Layer

Bielnicki

Jowsa

2018

steel research int.

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“…The authors of papers [10,24,25,[49][50][51][52] apply average values of specific heat in modelling the continuous casting process. It seems to be a good trade-off when no experimental data is available.…”

Section: Material-related Parametersmentioning

confidence: 99%

Control and Design of the Steel Continuous Casting Process Based on Advanced Numerical Models

Miłkowska-Piszczek

Falkus

2018

Metals

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The process of continuous casting of steel is a complex technological task, including issues related to heat transfer, the steel solidification process, liquid metal flow and phase transitions in the solid state. This involves considerable difficulty in creating the optimal process control system, which would include the influence of all the physico‐chemical phenomena which may occur. In parallel, there is an intensive development of new mathematical models and an increase in computer performance, therefore complex numerical simulations requiring substantial computing time can be conducted. This paper presents a review of currently applied numerical methods allowing the phenomena accompanying the process of continuous casting of steel to be accurately represented. Special attention was paid to the selection of appropriate methods to solve the technological problem selected. The possibilities of applying selected numerical models were analysed in order to modify and improve the existing process or to design a new one linked to the implementation of new steel grades in the current production. The description of the method of defining the boundary conditions, initial conditions and material parameters as vital components ensuring that numerical calculations based upon them in the finite element method, which is that most frequently applied, are correct is an important element of the paper. The possibility of reliably defining the values of boundary parameters on the basis of information on the intensity of cooling in individual zones of the continuous casting machine was analysed.

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Physical and numerical modeling of liquid slag entrainment in mould during slabs casting

Bielnicki¹,

Jowsa²

2020

Metall. Res. Technol.

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The paper presents results of physical and numerical modeling of liquid slag entrainment during continuous casting of steel slabs process. The main aim of this work was to determine the critical casting speed and also to specify, which entrainment mechanism is most responsible for transport of slag droplets into steel volume. Physical modeling was based on water-oil model of mould, made on reduced linear scale of Sl = 0.4. In mathematical modeling, Realizable k-ε and LES WALE models were used to describe turbulent motion of water and oil, whereas Volume of Fluid model was used to take into account interactions between phases. It was found, that the main cause of slag entrainment is the formation of von Karman vortex in the vicinity of submerged entry nozzle. The results of laboratory experiments and numerical simulations were compared each other. Both method are a useful tools for modeling of slag entrainment. Great agreement was found between laboratory experiments and numerical simulation carried out using LES WALE model, regarding the shape of the oil and oil entrainment as a result of vortex structures formation. However, in the simulation case using Realizable k-ε model, the oil entrainment hasn’t been modeled for the conditions under consideration.

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Numerical Modelling of Metal/Flux Interface in a Continuous Casting Mould / Modelowanie Numeryczne Powierzchni Międzyfazowej Metal/Ciekły Żużel W Krystalizatorze Do Ciągłego Odlewania Stali

Cited by 5 publications

References 15 publications

Physical Modeling of Mold Slag Entrainment in Continuous Steel Casting Mold with Consideration the Impact of Mold Powder Layer

Physical Modeling of Mold Slag Entrainment in Continuous Steel Casting Mold with Consideration the Impact of Mold Powder Layer

Control and Design of the Steel Continuous Casting Process Based on Advanced Numerical Models

Physical and numerical modeling of liquid slag entrainment in mould during slabs casting

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