Abstract
Major developments have been accomplished in the understanding of the physics involved in granular media and suspensions when subjected to shearing stresses. However, although partially solidified alloys have been reported to exhibit similar characteristics as granular material under certain conditions, such findings have never been fully addressed by the solidification community. Here, the modelling approaches adopted in granular mechanics for the description shear-induced particle migration have been included into a solidification model. It is shown that shear-induced particle migration has a considerable effect on the solid fraction distribution and macrosegregation formation in casting processes where a continuous and significant shear rate exists in a conduit with relatively small geometrical aspect ratio.
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