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A three-dimensional computational fluid dynamics model has been developed to investigate the fluid dynamic behavior inside a continuous castingContinuous casting mold to identify and characterize oscillations in the discharge jets and free surface oscillations. The model incorporates the interaction of the multiphase flow of steel-slag-air. The turbulence model used is the k-ɛ model, and a volume of fluid (VOF) multiphase model is employed to capture the flow dynamics inside the mold, surface oscillations, and slag layer protection. Velocity fields, turbulent kinetic energy, turbulent kinetic energy dissipation, and dynamic pressure were obtained to characterize the flow. The flow exhibits four large recirculation zones inside the mold, each with different dimensions and positions, resulting in a non-symmetric flow field at all times during the calculations. High percentages of backflowBackflow were observed at different calculation times within the submerged entry nozzle (SEN) discharge ports, along with the presence of vortices within the pool and throughout the SEN tip volume, indicating inefficient use of the discharge ports. Regarding free surface oscillations, the level tends to oscillate in the form of small sinusoidal waves with short wavelengths.

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Fluidodynamic Analysis in the Continuous Casting Mold for Conventional Slab and Inside the Submerged Entry Nozzle (SEN) Using Mathematical Simulation

  • 会议论文

  • 发表日期：

    2025年

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  • C. Ayala-Calderón,
  • E. Torres-Alonso,
  • J. Á. Ramos-Banderas,
  • C. A. Hernández-Bocanegra,
  • G. Solorio-Díaz

摘要

A three-dimensional computational fluid dynamics model has been developed to investigate the fluid dynamic behavior inside a continuous castingContinuous casting mold to identify and characterize oscillations in the discharge jets and free surface oscillations. The model incorporates the interaction of the multiphase flow of steel-slag-air. The turbulence model used is the k-ɛ model, and a volume of fluid (VOF) multiphase model is employed to capture the flow dynamics inside the mold, surface oscillations, and slag layer protection. Velocity fields, turbulent kinetic energy, turbulent kinetic energy dissipation, and dynamic pressure were obtained to characterize the flow. The flow exhibits four large recirculation zones inside the mold, each with different dimensions and positions, resulting in a non-symmetric flow field at all times during the calculations. High percentages of backflowBackflow were observed at different calculation times within the submerged entry nozzle (SEN) discharge ports, along with the presence of vortices within the pool and throughout the SEN tip volume, indicating inefficient use of the discharge ports. Regarding free surface oscillations, the level tends to oscillate in the form of small sinusoidal waves with short wavelengths.