Artículos de revistas
ALE method for solidification modelling
Fecha
2004-06Registro en:
Bellet, Michel; Fachinotti, Victor Daniel; ALE method for solidification modelling; Elsevier Science; Computer Methods in Applied Mechanics and Engineering; 193; 39-41; 6-2004; 4355-4381
0045-7825
CONICET Digital
CONICET
Autor
Bellet, Michel
Fachinotti, Victor Daniel
Resumen
In this paper an arbitrary Lagrangian-Eulerian (ALE) formulation has been developed for the simulation of casting processes. The method is applied both to mould filling simulation, where it can provide accurate free surface description, and to the study of thermo-mechanical phenomena occurring in the subsequent cooling down of cast parts: prediction of solute transport and of distortions and stresses. In the first three sections, all governing equations<br />(constitutive equations, momentum, energy, solute transport) are given. Then the ALE formulation is presented: mesh updating with evolving free surfaces, using "conservative" normal vectors to enforce mass conservation; treatment of advection terms, using an original nodal upwind method; definition of Lagrangian and Eulerian-Lagrangian regions. Finally, examples of applications are given.