Abstract
•To accelerate the freezing various shapes of nano-powders were applied.•FEM with incorporation of implicit technique was employed.•The freezing time decline about 10.71% with growth of m.•The required time declines about 31.39% with raising φ.
To reduce the freezing time for a unit with curved walls which filled with water, nanoparticles has been dispersed. The shapes of CuO nano-powder can affect the conductivity of mixture and this factor efficacy has been scrutinized in current article. Freezing process is mostly affected by condition and due to negligible magnitude of velocity, only the energy equation with neglecting advection term should be considered as main equation which has been solved via FEM. The proposition of utilizing homogeneous mixture is applicable for condition of low concentration of additives and for this study, this is practical assumption. Conduction mode is significant for freezing and dispersing nanoparticle especially with greater shape factor can expedite the process. When shape factor of copper oxide nanoparticles augments with fraction of 0.04, the freezing time decline about 10.71%. The required time declines about 31.39% with raising the fraction of particles from zero to 0.04.