Development of Mold Filling Process Simulation considering Air Entrainment using SPH Method

. Die-casting is a casting method suitable for mass production because it can accurately form complicated shapes. However, when the mold is filled with the molten metal, casting cavities (gas porosity) are generated due to air entrainment, and the strength of the product varies. In this study, the mold filling process considering air entrainment in the die cast are simulated using the two-phase flow SPH method. And then, the behavior of air entrainment due to the filling of molten metal (Aluminum alloy), especially the efect of injection speeds are investigated. In concluson, it is possible to investigate the air entrainment behavior at the time of filling the molten metal and the flow behavior due to different filling speeds. In addition, to speed up the two-phase flow program by SPH method, a parallel algorithm using OpenMP is implemented.