Effect of Thermal Configurations in Multi-pipe Heat Exchangers on MHD Natural Convection within a Square Enclosure with Curved Corners

This paper aims to study Magnetohydrodynamic (MHD) natural convection in a square enclosure with curved corners, particularly the thermal performance of multi-inner pipes used in heat exchangers. Numerical simulations are carried out to study the fluid flow behavior and thermal distribution in the presence of magnetic field by changing Hartmann number from [0-80] and varying Rayleigh number [1e4-1e6]. It can be seen that the layout of the inner pipes has a great influence on the enhancement of heat transfer rates and some recommendations for the improvement of the heat exchange design for engineering applications are provided. Finally, conclusions are made based on the numerical results of this study. The results showed that increasing Ra and reduced Ha reveals better heat transfer. Additionally, at high, case 1 give the best heat transfer bettering.