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NUMERICAL MODELLING OF HEAT FLOW IN THE CONTINUOUS CASTING STEEL

DOI: 10.1615/ICHMT.2009.CONV.1060
page 6

Hind Saib
Université de Tlemcen, Faculté des Sciences de l’Ingénieur, Département de Mécanique, B. P. 230, Tlemcen 13000, Algérie

Abdel Illah Nabil Korti
ETAP Laboratory, Department of Mechanical Engineering, University of Tlemcen, B.P. 230, Tlemcen 13000, Algérie

Yahia Khadraoui
Faculté des Sciences del'Ingénieur, Université Abou Bakr, Belkaid Tlemcen 13000, Algeria

Abstract

This work introduces a two-dimensional numerical model for the coupled solution of momentum, energy and turbulence equations, especially addressed to binary alloys solidification. The governing equations consist of the continuity equation, the Navier–Stokes equations and the energy equation. The turbulence effects on the transport equations were taken into account using a low-Reynolds number k-ε turbulence model. The solidification of molten steel was modeled through the implementation of the enthalpy-porosity technique. The effect of phase change on convection is accounted for using a Darcy's law-type porous media treatment. The resolution of those equations has been implemented in FLUENT code. Finally, we show an application of the model to the solidification in a steel continuous casting. The current study shows that casting speed is a very important parameter in controlling the breakout condition of the cast material.

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