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This research employs nanoparticles of varied shapes in water to expedite solidification within a uniquely designed container. The container's wavy interior, augmented with strategically positioned fins, enhances the process. The study employs a numerical simulation to analyze the combined impact of nanoparticle shapes and its concentration on solidification. The equations for presenting the process have unsteady terms and implicit method was utilized for discretization. The main heat transfer mode during freezing is conduction and loading nanoparticles can enhance this mode. Homogeneous mixture approximation has been utilized because of low fraction of additives. The contours and curves were demonstrated the behavior of system during discharging. The profile of temperature has reverse relationship with all variable factors. Adding nano-sized powders can improves the freezing rate more than 26 …