Experimental and Numerical Analysis of the Deformation of a Liquid Aluminum Free Surface Covered by an Oxide Layer During Induction Melting - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Metallurgical and Materials Transactions B Année : 2015

Experimental and Numerical Analysis of the Deformation of a Liquid Aluminum Free Surface Covered by an Oxide Layer During Induction Melting

Akshay Bansal
  • Fonction : Auteur
  • PersonId : 776633
  • IdRef : 197078117
Pierre Chapelle
Jean Pierre Bellot

Résumé

In an induction furnace, as a result of electromagnetic forces, the free surface of a liquid aluminum bath deforms and takes the form of a dome. The oxide layer that forms spontaneously on the free surface of aluminum melts may also influence the deformation by exerting an additional friction force on the metal. A non-intrusive experimental technique-Structured Light Fringe Projection-was used to measure the complete surface deformation and its fluctuations, for a varying set of operating parameters-inductor current intensity and initial liquid metal filling level inside the crucible. For an axisymmetric geometry, numerical simulations were carried out to calculate in a single framework: (i) the electromagnetic forces using the A-V formulation, (ii) the free surface deformation using the Volume of Fluid method, and (iii) the turbulent stirring of the metal using a RANS-based k-omega model. The friction force due to the oxide layer was modeled by imposing a pseudo-wall condition on the free surface, which makes the interfacial velocity very small compared to the average liquid metal pool velocity. A marked impact on the dome height due to applied friction force is observed. Finally, comparisons between the predicted and measured domes are presented.

Domaines

Matériaux
Fichier non déposé

Dates et versions

hal-01264139 , version 1 (28-01-2016)

Identifiants

Citer

Akshay Bansal, Pierre Chapelle, Yves Delannoy, Emmanuel Waz, Pierre Le Brun, et al.. Experimental and Numerical Analysis of the Deformation of a Liquid Aluminum Free Surface Covered by an Oxide Layer During Induction Melting. Metallurgical and Materials Transactions B, 2015, 46 (5), pp.2096-2109. ⟨10.1007/s11663-015-0398-7⟩. ⟨hal-01264139⟩
216 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More