Abstract
The current research may well be carried out to dissect the efficacy of exothermic reaction on the thermal behavior of suspension of Nano-Encapsulated Phase Change Materials (NEPCMs) particles in a complex adiabatic enclosure which entails two differently heated circular cylinders. These cylinders have the potential to move horizontally and to rotate clockwise. The equations governed for thermal-natural convective flow considering exothermic reaction may be solved utilizing FEM. Results described the impact of Stefan and Rayleigh numbers (Ste, Ra), aspect ratio (AR), and non-dimensional fusion temperature (θf) on the thermo-hydrodynamic features of the suspension. The overall heat transmission was found to be reinforced by escalating Ra up to 144.74 % and be lessened by growing AR up to 49 %. Also, there is an optimum value of the latent heat of the PCM cores for a maximum heat transfer rate at a specific value of fusion temperature. Further, results reveal that making the fusion temperature near to the cylinders' temperatures diminishes the heat transfer.
•Natural convection of suspension of NEPCMs in a complex enclosure which entails two circular rotative cylinders is analyzed.•The impact of exothermic reaction is considered.•The finite element method (FEM) is applied to discretize the governing equations.•It is found that there is an optimum value of Ste for a maximum heat transfer rate at a specific value of fusion temperature.