Numerical study of radiative MHD hybrid nanofluid flow through porous concentric cylinders

The main objective of this study is to investigate the effects of Cu, Al2O3, and H2O-based nanofluids on heat transfer through annulus-shaped, two concentric cylindrical regions. The quadratic convection in the flow of hybrid nanofluids in an inclined porous annulus medium is considered. The conservation laws are obeyed in a non-linear model of the flow geometry. Applying a suitable non-dimensional transformation, we solved the resultant equation using the Runge-Kutta 4th order method with a shooting technique to obtain the solution for the velocity and temperature. The flow structure and heat transfer are influenced by quadratic resistance and mixed convection mechanisms in nonlinear Boussinesq approximation, as investigated in biomed-ical devices, nuclear reactors as well as heat exchangers. The analysis demonstrates that radiation significantly affects heat transfer by enhancing the Lorentz force, which in turn dissipates the flow rate. This behaviour aligns well with the flow patterns reported in previous studies for various physical parameters.