|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Frontiers in Solidification: An MPMD Symposium in Honor of Michel Rappaz
||Multiphysics and Multiscale Modeling and Simulation of Solidification Processes
||Hervé Combeau, Miha Založnik
|On-Site Speaker (Planned)
Prediction of solidification structures and defects such as grain microstructures, macrosegregations and microporosities is a key issue for industry. Models that predict these structures at the process scale need to account for couplings between various physical phenomena across several imbricated length scales. The goal of this presentation is to provide an overview of existing multiscale models and their principles, as well as of the specific algorithms needed to solve the large number of strongly coupled partial differential equations. Recent applications of these models to industrial solidification processes (casting of steel ingots, DC casting of aluminum alloys) are presented. Their ability to help in the understanding of complex phenomena, such as the competition between nucleation and growth of grains in the presence of convection of the liquid and of grain motion, is demonstrated and their predictive capabilities are discussed. Finally, the key remaining questions for future research are addressed.