Radiative Powell–Eyring Fe ₃ O ₄ –CoFe ₂ O ₄ /ethylene glycol-water hybrid nanofluid flow over a stretching surface with heat generation/absorption

The Eyring–Powell model provides an effective rheological framework for describing shear-thinning, nonlinear viscous behaviour in many industrial and geophysical fluids. When extended to hybrid nanofluids, the model becomes highly relevant for modern thermal systems where enhanced heat transport is essential, such as device cooling, heat-collecting solar devices, and chemical processing equipment. Considering these applications, the present work focuses on the magnetic boundary-layer flow and heat transfer aspects of Eyring–Powell hybrid nanofluid over a stretching sheet, incorporating the combined effects of thermal radiation, heat generation/absorption, porous medium, viscous dissipation and velocity slip. Similarity transformations are applied to change the principal nonlinear PDEs into a system of ODEs, which are numerically solved using the bvp4c scheme with excellent convergence and computational accuracy. The impact of key physical factors on velocity, temperature and heat transfer rate is systematically quantified. The results reveal that the temperature upsurges with higher magnetic, radiation and heat generation/absorption parameters, whereas the porous medium parameter, velocity slip parameter, fluid parameter, and suction/blowing parameter reduce the momentum profiles. An increase in radiative influence significantly boosts the heat transfer rate, especially when the radiation parameter shifts from 0.1 to 0.4, the local Nusselt number grows by nearly 19.27%.