A dual scale model for macrosegregation in alloy solidification

R. Pardeshi, A. K. Singh, V. R. Voller, P. Dutta

Research output: Contribution to journalArticle

1 Scopus citations

Abstract

A numerical approach for coupling the temperature and concentration fields using a micro/macro dual scale model for a solidification problem is presented. The dual scale modeling framework is implemented on a hybrid explicit-implicit solidification scheme. The advantage of this model lies in more accurate consideration of microsegregation occurring at micro-scale using a subgrid model. The model is applied to the case of solidification of a Pb-40% Sn alloy in a rectangular cavity. The present simulation results are compared with the corresponding experimental results reported in the literature, showing improvement in macrosegregation predictions. Subsequently, a comparison of macrosegregation prediction between the results of the present method with those of a parameter model is performed, showing similar trends.

Original languageEnglish (US)
Pages (from-to)934-953
Number of pages20
JournalNumerical Heat Transfer; Part A: Applications
Volume59
Issue number12
DOIs
StatePublished - Jan 1 2011

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