Modeling Asymmetric Flow in the Thin-Slab Casting Mold Under Electromagnetic Brake
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In: Steel research international, Vol. 93.2022, No. 5, 2200088, 05.2022.
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TY - JOUR
T1 - Modeling Asymmetric Flow in the Thin-Slab Casting Mold Under Electromagnetic Brake
AU - Vakhrushev, Alexander
AU - Kharicha, Abdellah
AU - Karimi Sibaki, Ebrahim
AU - Wu, Menghuai
AU - Ludwig, Andreas
AU - Nitzl, Gerald
AU - Tang, Yong
AU - Hackl, Gernot
AU - Watzinger, Josef
N1 - Publisher Copyright: © 2022 The Authors. Steel Research International published by Wiley-VCH GmbH.
PY - 2022/5
Y1 - 2022/5
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85128869256&partnerID=8YFLogxK
U2 - 10.1002/srin.202200088
DO - 10.1002/srin.202200088
M3 - Article
VL - 93.2022
JO - Steel research international
JF - Steel research international
SN - 0177-4832
IS - 5
M1 - 2200088
ER -
