Abstract
•CuO-water nanofluid treatment during solidification is studied.•NEPCM is replaced instead of pure PCM.•FEM is selected to model the unsteady phenomena.•Lorentz force has favourable impact on solidification.
In current article, we have extended our FEM code to scrutinize the importance of external field on expedition of discharging with dispersing nano-powders into water. Insertion of magnetic force makes the isotherms become more uniform and can enhance the performance. To discretize the governing equations, Galerkin approach is utilized and contours are obtained. Also, the duration times are reported in all cases. New regression formula based on full solidification is suggested.