چكيده لاتين :
A numerical model has been developed for the determination of liquidflow permeability through
columnar dendrite during growth. The model is inclusive two stages, first numerical evolution ofthe dendrite
shape during growth, and second numerical determination of the interdendritic liquid permeability.
Simulation results shown which solute concentration by evolution ofdendrite shape could result to reduction
ofthe permeability during solidification time. Comparison between the experimental data from other authors
and the present numerical model data, for the low and high solid fractions, has shown a good agreement
rather than current numerical models. Therefore present permeability model, in this investigation, could be
used for all of the micro solidification codes by coupling on the segregation and the Fickיs equations in
domain ofthe inter-dendritic liquidfor mushy alloys.
