Large Eddy Simulations of Electromagnetic Braking Effects on Argon Bubble Transport and Capture in a Steel Continuous Casting Mold

2018 ◽  
Vol 49 (3) ◽  
pp. 1360-1377 ◽  
Author(s):  
Kai Jin ◽  
Surya P. Vanka ◽  
Brian G. Thomas
Keyword(s):  
Continuous Casting ◽  
Large Eddy Simulations ◽  
Continuous Casting Mold ◽  
Argon Bubble ◽  
Casting Mold ◽  
Steel Continuous Casting ◽  
Large Eddy ◽  
Bubble Transport

scholarly journals Large Eddy Simulation of Multi-Phase Flow and Slag Entrapment in a Continuous Casting Mold

Metals ◽  
2018 ◽  
Vol 9 (1) ◽  
pp. 7 ◽  
Author(s):  
Xianglong Li ◽  
Baokuan Li ◽  
Zhongqiu Liu ◽  
Ran Niu ◽  
Yanqiang Liu ◽  
...  
Keyword(s):  
Large Eddy Simulation ◽  
Continuous Casting ◽  
Vortex Formation ◽  
Three Dimensional ◽  
Particle Model ◽  
Continuous Casting Mold ◽  
Casting Mold ◽  
Eddy Simulation ◽  
Large Eddy ◽  
Slag Entrapment

A transient, three-dimensional mathematical model has been developed to study the slag entrapment in a continuous casting mold. The unsteady turbulent flow is computed using the large eddy simulation (LES). The sub-grid scale structure is modeled by the Smagorinsky–Lilly model. The movements of discrete bubbles, as well as three continuous phases (air–slag–steel), are described by solving the coupled discrete particle model and volume of fraction (DPM+VOF) approach. The bubble transport inside different phases (steel and slag) and the escape near the air–slag interface are well studied. Good agreement is obtained by comparing with the plant observation of the slag eyes on the top surface of the mold. Three main mechanisms of slag entrapment are identified; vortex formation, shear-layer instability, and meniscus fluctuation. Four stages are observed for a slag entrapment: deformation, necking, breaking, and dragging in the mold. The model is helpful for understanding the formation of slag entrapment during continuous casting.

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