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Dynamic modelling and validation of the metal/flux interface in continuous casting

Dynamic modelling and validation of the metal/flux interface in continuous casting

Pericleous, K. ORCID: 0000-0002-7426-9999, Djambazov, G. ORCID: 0000-0001-8812-1269, Domgin, J.F. and Gardin, P. (2008) Dynamic modelling and validation of the metal/flux interface in continuous casting. In: 6th European Conference on Continuous Casting. Associazione Italiana Di Metallurgia (AIM), Riccione, Italy. ISBN 88-85298-65-6

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This paper concerns the development and validation (using an oil/water system) of a finite volume computer model of the continuous casting process for steel flat products. The emphasis is on hydrodynamic aspects and in particular the dynamic behaviour of the metal/slag interface due to the momentum imparted by the submerged entry nozzle (SEN) jets that bring the metal into the mould. Instability and wave action encourage the entrainment of inclusions into the melt affecting product quality. To track the interface between oil and water a new implicit algorithm was developed, called the Counter Diffusion Method. To prevent numerical damping of low frequency waves, a time-filtered version of the k- model was incorporated in the model. The physics of the interface dynamics are affected by density stratification and surface interfacial tension, with additional source terms introduced in the turbulence model to account for the former effect. Gas bubbles were modelled using a Lagrangian tracking method. The model was validated against experimental measurements obtained in a water model apparatus at Arcelor Research. Silicon oil was used to represent the lighter layer whilst air was pumped through the SEN to represent the argon.

Item Type: Conference Proceedings
Title of Proceedings: 6th European Conference on Continuous Casting
Additional Information: 6th European Conference on Continuous Casting, June 3-6, 2008, Riccione, Italy
Uncontrolled Keywords: Continuous casting, Interface instability, Steelmaking
Pre-2014 Departments: School of Computing & Mathematical Sciences > Centre for Numerical Modelling & Process Analysis > Computational Science & Engineering Group
Last Modified: 02 Mar 2019 15:53

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