Skip to Main content Skip to Navigation
Theses

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.
Complete list of metadatas

Cited literature [44 references]  Display  Hide  Download

https://pastel.archives-ouvertes.fr/tel-00476555
Contributor : Magalie Prudon <>
Submitted on : Monday, April 26, 2010 - 4:34:38 PM
Last modification on : Wednesday, October 14, 2020 - 4:02:36 AM
Long-term archiving on: : Tuesday, September 28, 2010 - 12:41:02 PM

Identifiers

  • HAL Id : tel-00476555, version 1

Citation

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

Share

Metrics

Record views

418

Files downloads

4020