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Computation of Microsegregation and Microstructure in Solidification with Fluid Convection

Published online by Cambridge University Press:  10 February 2011

D. Juric
D. Juric*
Affiliation:
George W. Woodruff School of Mechanical Engineering Georgia Institute of Technology, Atlanta, GA 30332-0405
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Abstract

The effects of fluid flow on the dendritic solidification morphology of pure materials is studied using a computational methodology based on a two-dimensional front tracking/finite difference method. A general single-field formulation is presented for the full coupling of phase change, fluid flow, and heat transport in both the solid and liquid phases. This formulation accounts for interfacial rejection/absorption of latent heat, interfacial anisotropies, discontinuities in material properties between the liquid and solid phases, shrinkage/expansion upon solidification and motion and deformation of the solid. Numerical results are presented for the dendritic solidification of pure succinonitrile in a shear flow. Comparison with solidification into a quiescent liquid indicates that fluid convection increases the overall rate of solidification while the growth rate of the leading dendrite tip is unchanged.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 538: Symposium J – Multiscale Modelling of Materials , 1998 , 163
Copyright
Copyright © Materials Research Society 1999

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