3D Injection Molding Simulation of Semi-Solid Magnesium Alloys

Peer reviewed: YesNRC publication: Ye

Mold Filling Simulation of Semi-Solid Magnesium Alloys

Peer reviewed: YesNRC publication: Ye

Fluid modeling of the flow and free surface parameters in the Metaullics LOTUSS system

The growth of aluminum product consumption has placed an emphasis on improving the efficiency of processing internally generated scrap. In the Metaullics LOTUSS System (LOw TUrbulence Scrap Submergence), aluminum machining chips can be melted at a rate in excess of 15 tons per hour with very high recovery efficiencies. A computational fluid dynamics (CFD) model has been implemented to optimize the LOTUSS System to further enhance efficiency and maximize melting performance. Preliminary studies of the CFD modeling will be presented outlining the three-dimensional numerical algorithm for solving the turbulent and free-surface flow inside the LOTUSS system. CFD simulations were carried out for melting system conditions and verified against previous experimental studies. The results indicate that the free surface CFD model is an accurate representation of real-world conditions and the predictions for the position and size of the vortex cone compare very well with the measured experimental values.En raison de la consommation grandissante des produits en aluminium, une attention particuli\ue8re est accord\ue9e \ue0 l\u2019am\ue9lioration de l\u2019efficacit\ue9 du traitement interne des rebuts. Dans le syst\ue8me LOTUSS (LOw TUrbulence Scrap Submergence) de Metaullics, les copeaux d\u2019usinage en aluminium peuvent \ueatre fondus \ue0 une vitesse sup\ue9rieure \ue0 15 tonnes par heure avec une tr\ue8s haute efficacit\ue9 de r\ue9cup\ue9ration. Un mod\ue8le de dynamique des fluides num\ue9rique (DFN) a \ue9t\ue9 mis en \u153uvre pour optimiser le syst\ue8me LOTUSS et ainsi am\ue9liorer son efficacit\ue9 et maximiser la performance de la fusion. Des \ue9tudes pr\ue9liminaires de la mod\ue9lisation par DFN sont pr\ue9sent\ue9es, soulignant l\u2019algorithme num\ue9rique tridimensionnel permettant de r\ue9soudre l\u2019\ue9coulement turbulent et avec surface libre \ue0 l\u2019int\ue9rieur du syst\ue8me LOTUSS. Les simulations par DFN ont \ue9t\ue9 r\ue9alis\ue9es pour des conditions de fusion et v\ue9rifi\ue9es en comparant les r\ue9sultats \ue0 ceux d\u2019\ue9tudes exp\ue9rimentales pr\ue9c\ue9dentes. Les r\ue9sultats indiquent que le mod\ue8le de DFN \ue0 surface libre constitue une repr\ue9sentation ad\ue9quate des conditions r\ue9elles et les pr\ue9dictions sur la position et la taille du vortex se comparent tr\ue8s bien aux valeurs mesur\ue9es exp\ue9rimentalement.Peer reviewed: YesNRC publication: Ye