Water Modeling of the Fluid Flow Instability in Continuous Thin Slab Casting Mould

Shen, Houfa; Shen, Bingzhen; Liu, Baicheng

doi:10.1002/srin.200706244

Cited by 7 publications

(3 citation statements)

References 7 publications

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“…However, several researchers from both industry and academia have proven various devices and operating strategies in order to improve the quality of steel produced through this process [1][2][3][4]. Surface defects and slag entrapment are significant defects that deteriorate the quality of steel that is produced by the continuous casting process [5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Numerical and Physical Parametric Analysis of a SEN with Flow Conditioners in Slab Continuous Casting Mold

Gonzalez-Trejo

Real-Ramirez

Miranda-Tello

et al. 2017

Archives of Metallurgy and Materials

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Some of the most recent technologies that improves the performance in continuous casting process has installed infrastructure outside the mold to modify the natural fluid flow pattern to obtain a quasi-steady condition and promote a uniform solidified shell of steel. The submerged entry nozzle distributes the liquid steel in the mold and can be used to obtain the flow symmetry condition with external geometry improvements. The fluid flow conditioners were located near the outlet ports of the nozzle. The aim of the modifiers is to impose a pseudo symmetric pattern in the upper zone of the mold by inhibiting the fluid exchange between the zones created by conditioners. This work evaluates the effect of the thickness and length of the fluid-flow modifiers on the overall performance of the submerged nozzle. These properties of the fluid-flow modifiers were normalized based on two of the geometric dimensions of the standard equipment. Numerical and physical simulations suggest that the flow modifier should be as thin as possible.

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Section: Introductionmentioning

confidence: 99%

Numerical and Physical Parametric Analysis of a SEN with Flow Conditioners in Slab Continuous Casting Mold

Gonzalez-Trejo

Real-Ramirez

Miranda-Tello

et al. 2017

Archives of Metallurgy and Materials

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“…[11] The asymmetric flow in the mold was investigated experimentally in early 1990 s by Gupta and Lahiri and later on supplemented by the consequent works of other researchers. [12][13][14][15][16][17][18][19] The interaction of the fresh hot melt turbulent flow with the solidifying solid shell is generally an important topic in the solidification process. It becomes especially crucial in continuous casting.…”

Section: Introductionmentioning

confidence: 99%

“…The asymmetric flow in the mold was investigated experimentally in early 1990 s by Gupta and Lahiri and later on supplemented by the consequent works of other researchers. [ 12–19 ]…”

Section: Introductionmentioning

confidence: 99%

Modeling Asymmetric Flow in the Thin‐Slab Casting Mold Under Electromagnetic Brake

Vakhrushev

Kharicha

Karimi-Sibaki

et al. 2022

steel research int.

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Continuous casting (CC) is nowadays the world‐leading technology for steel production. The thin slab casting (TSC) is featured by a slab shape close to the final products and a high casting speed. The quality of the thin slabs strongly depends on the uniformity of the turbulent flow and the superheat distribution, defining the solid shell growth against a funnel‐shaped mold. In most studies, it is commonly assumed that the submerged entry nozzle (SEN) is properly arranged, and the melt inflow is symmetric. However, the misalignment or clogging of the nozzle can lead to an asymmetric flow pattern. Herein, the asymmetry is imposed via a partial SEN clogging: a) a local porous zone inside the nozzle reflects the presence of the clog material; b) the resistance of the clog is varied from low to high values. The solidification during TSC is modeled, including the effects of the turbulent flow. The variation of the flow pattern and the solidified shell thickness are studied for different permeability values of the SEN clogging. These effects are considered with and without the applied electromagnetic brake (EMBr) using an in‐house magnetohydrodynamics (MHD) and solidification solver developed within the open‐source package OpenFOAM.

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URANS Simulation of Continuous Casting Mold Flow: Assessment of Revised Turbulence Models

Kratzsch

Timmel

Eckert

et al. 2015

steel research int.

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A time resolving numerical model of single phase mold flows is formulated in the frame of Reynolds‐averaged Navier–Stokes (RANS) simulations. Three revised eddy viscosity turbulence models besides the often used Standard k–ϵ model for steady and unsteady RANS simulations are evaluated with the computational fluid dynamics (CFD) software tool OpenFOAM. The performance of the numerical model and the different turbulence models is tested with help of the mini‐LIMMCAST facility. Numerical data are compared with experimental results focusing especially on the jet flow region. The different turbulence models lead to slight deviations from the experimental data in the case of steady state calculation. For the time‐averaged unsteady RANS equations (URANS) results, a crucial influence by the discretization order is observed. In the case of unsteady results a mix between first and higher order accuracy schemes is necessary for representative results. The use of the Standard k–ϵ model and the RLZ k–ϵ model can lead to unstable behavior in the case of URANS simulations. The study concludes, that in the case of qualitative, temporally resolved informations, and temporally averaged results, an unsteady RANS simulation can keep up with a large eddy simulations (LES).

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Water Modeling of the Fluid Flow Instability in Continuous Thin Slab Casting Mould

Cited by 7 publications

References 7 publications

Numerical and Physical Parametric Analysis of a SEN with Flow Conditioners in Slab Continuous Casting Mold

Numerical and Physical Parametric Analysis of a SEN with Flow Conditioners in Slab Continuous Casting Mold

Modeling Asymmetric Flow in the Thin‐Slab Casting Mold Under Electromagnetic Brake

URANS Simulation of Continuous Casting Mold Flow: Assessment of Revised Turbulence Models

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