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Modélisation 3D thermomécanique du refroidissement primaire lors de la coulée continue d'aciers

Abstract : This work deals with the three-dimensional numerical simulation by finite elements of primary cooling during the continuous casting of steel with the software THERCAST. The objective of this study is to model with accuracy the solid, liquid (and mushy) regions of a continuous casting slab. In this context, the global instationary strategy is proposed : the computational domain grows according to the casting velocity. In order to overcome the difficulties due to purely Eulerian or purely Lagrangian approaches, a mixed Eulerian-Lagrangian-ALE (Arbitrary Lagrangian Eulerian) method is proposed. The solidifying shell is modelled with an elastovisco-plastic law. Thanks to an adaptive automatic remeshing method, this shell is represented with accuracy due to a fine anisotropic mesh in the temperature and stress gradient directions. In order to model liquid flows, a transport method on the argon bubbles density is proposed, coupled by the gravitational force term with the Navier-Stokes equations. The turbulent effects are taken into account via a standard k − " model. All those developments have been compared with success to academical results or benchmarks. Yet, a simulation of an industrial configuration with all those methods and phenomenologies is still a difficulty to overcome.
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Submitted on : Monday, April 26, 2010 - 4:34:38 PM
Last modification on : Wednesday, November 17, 2021 - 12:28:16 PM
Long-term archiving on: : Tuesday, September 28, 2010 - 12:41:02 PM


  • HAL Id : tel-00476555, version 1


Marc Henri. Modélisation 3D thermomécanique du refroidissement primaire lors de la coulée continue d'aciers. Mécanique []. École Nationale Supérieure des Mines de Paris, 2009. Français. ⟨tel-00476555⟩



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