This study examines the heat-transfer characteristics of the hydrodynamically established, thermally developing flow of ferrofluid (Fe3O4 + water) in a 2-mm-diameter circular channel under the influence of both symmetric and asymmetric non-uniform magnetic fields. The Langevin
function is employed to induce magnetization in ferrofluid nanoparticles when they are subjected to a magnetic field. All instances are analyzed under the parameters of a constant heat flux (q” =1000 W/m2) condition and within a low Reynolds number spectrum (20-100). Therefore, heat
transfer augmentation is facilitated by the application of a magnetic field, which induces a recirculation zone within the flow domain. Systematic analysis revealed that an asymmetric non-uniform magnetic field significantly outperforms the symmetric configuration in both the local and
space-averaged Nusselt numbers, especially at a lower Reynolds number (Re=20). The specific angular position of the magnet is critical, as it produces the field’s asymmetry and the resulting hydrothermal impact. Among the cases studied, the magnet angular orientation at θ = 135o
proved to be optimal, resulting in a substantial 129.8% increase locally and a 23.54% enhancement in the overall heat transfer effect.