Modelling of future needs macrosegregation: applications and future needs

Modelling and simulation of macrosegregation has experienced explosive growth since the pioneering studies of Flemings and co-workers in the mid-1960s. This paper presents a review of recent macrosegregation models, with particular emphasis on their application to selected industrially relevant casting processes. The successes and shortfalls of the models in predicting measured macrosegregation patterns are noted. Although it is still early in their development, advanced macrosegregation models that include a detailed consideration of the solidification microstructure are also reviewed. Recent studies involving direct numerical simulation of macrosegregation related phenomena on a microscopic scale are highlighted. Important issues deserving future research attention are identified. (C) 2002 IoM Communications Ltd and ASM International. Published by Maney for the Institute of Materials, Minerals and Mining and ASM International.