In this work, a Eulerian multiphase flow model based on volume averaging approach is proposed to simulate the semi-solid solidification of the cooling slope generated Al-15Mg2Si-4.5Si composite slurry. The four phases considered here are liquid (l), primary solid (Mg2Si), secondary solid (α-Al) and air (a). A temperature correction scheme is used to simulate the effect of latent heat release during solidification. The effect of recalescence is also observed in the present solidification model. The simulation findings include shape and size of the α-Al and primary Mg2Si grains, solid fraction, temperature, melt viscosity etc. Four different melt pouring temperatures into the slope (908K, 913K, 923K and 933K) are considered here to identify the optimum one. Finally, experimental validation of simulation findings is performed via quantitative image analysis of optical micrographs of the solidified samples.

Moderated by: Andre Phillion / Matt Krane