TY - CONF

T1 - Effects of the asymmetric and oscillating turbulent melt flow on the heat transfer and solidification inside the thin slab continuous casting (TSC) mold under the applied electromagnetic brake (EMBr)

AU - Vakhrushev, Alexander

AU - Karimi Sibaki, Ebrahim

AU - Wu, Menghuai

AU - Tang, Yong

AU - Hackl, Gernot

AU - Watzinger, Josef

AU - Bohacek, Jan

AU - Kharicha, Abdellah

PY - 2024/6

Y1 - 2024/6

N2 - The thin slab casting (TSC) is a breakthrough near-net-shape technique for flatproducts accompanied by rapid casting and solidification rates. The TSC quality hinges on theturbulence, super-heat flow and growth of the solidified shell. The electromagnetic brake(EMBr) is commonly applied to control the fresh melt flow after feeding through a submergedentry nozzle (SEN). Numerical modelling is a perfect tool to investigate the multiphasephenomena in the continuous casting (CC). The presented study considers the heat transferthrough the solid shell and water-cooled copper mold including the averaged thermal resistanceof the slag skin and the air gap coupled with the turbulent flow and magnetohydrodynamics(MHD) model using an in-house code developed inside the open-source computational fluiddynamics (CFD) package OpenFOAM®. The model is applied to investigate different undesiredasymmetric melt flow issues: (i) with the misaligned or (ii) partially blocked SEN; (iii) causedby the mean flow fluctuations with the natural frequencies; (iv) related to the oscillations of thefresh melt jets for the specific SEN designs and casting regimes. The variation of the flow patternand superheat distribution is studied and presented for different scenarios both with and withoutapplied EMBr.

AB - The thin slab casting (TSC) is a breakthrough near-net-shape technique for flatproducts accompanied by rapid casting and solidification rates. The TSC quality hinges on theturbulence, super-heat flow and growth of the solidified shell. The electromagnetic brake(EMBr) is commonly applied to control the fresh melt flow after feeding through a submergedentry nozzle (SEN). Numerical modelling is a perfect tool to investigate the multiphasephenomena in the continuous casting (CC). The presented study considers the heat transferthrough the solid shell and water-cooled copper mold including the averaged thermal resistanceof the slag skin and the air gap coupled with the turbulent flow and magnetohydrodynamics(MHD) model using an in-house code developed inside the open-source computational fluiddynamics (CFD) package OpenFOAM®. The model is applied to investigate different undesiredasymmetric melt flow issues: (i) with the misaligned or (ii) partially blocked SEN; (iii) causedby the mean flow fluctuations with the natural frequencies; (iv) related to the oscillations of thefresh melt jets for the specific SEN designs and casting regimes. The variation of the flow patternand superheat distribution is studied and presented for different scenarios both with and withoutapplied EMBr.

KW - TSC

KW - EMBr

KW - melt flow

KW - CFD

U2 - 10.1088/1742-6596/2766/1/012196

DO - 10.1088/1742-6596/2766/1/012196

M3 - Paper

T2 - 9th edition of the European Thermal Sciences Conference

Y2 - 10 June 2024 through 13 June 2024

ER -