Numerical analysis of nanofluid flow through mixed convective nonlinear stretching sheet induced in porous media along with thermal radiation

The current research aims to investigate the influence of thermal radiation on heat transfer in a mixed convection nanofluid flow generated by a nonlinear stretching sheet. The study incorporates parameters such as magnetic fields and non-uniform heat source/sink. By employing suitable transformations, nonlinear ordinary differential equations derived from nonlinear Navier-Stokes equations are solved using the Runge-Kutta fourth-order method combined with the shooting method. Graphical representations are utilised to highlight the significance of variables as velocity and temperature. An increase in the Eckert number Ec and the non-uniform heat source/sink parameters (A*, B*) leads to enhancements in temperature and velocity. Conversely, higher values of magnetic parameter M, permeability parameter K, and nonlinear stretching parameter n result in decreased velocity and improved temperature distribution. Temperature elevation corresponds to an increase in nanoparticle volume fraction Fi. The Nusselt number and skin friction coefficient exhibit a decreasing trend concerning magnetic restriction M, Prandtl number Pr, permeability restriction K, and nanoparticle volume fraction Fi. Conversely, the skin friction coefficient demonstrates an increasing trend, while the Nusselt number decreases concerning the radiation parameter Ra, non-uniform heat source/sink parameters (A*, B*), and the Eckert number Ec.