Abstract
Magnetic natural convection of Fe3O4-H2O nanoliquid within a complex shaped enclosure with a roundish heater is numerically evaluated via FEM. The entropy generation is also perused. Thermal radiation's impact and nanoparticle shape may well be considered. In addition to this, MFD viscosity is taken into account to calculate the nanoliquid's viscosity. Influences of impressive factors e.g. radiation parameter, Rayleigh number, aspect ratio, volume fraction of nanoliquid, nanoparticle shape, and Hartmann number on the hydro-thermal's features and Bejan number have been perused. Supplementary to this, an exclusive correlation for Nusselt number has been proposed based on aforementioned parameters. Findings report that lower amounts of AR can provide higher heat transfer rate and mean Be could possess a descending trend by augmenting Ra.