Heat transfer analysis of magnetohydrodynamics graphene oxide-water nanofluid flow through convergent-divergent channels

This investigation deals with the analysis of heat transfer and MHD viscous Graphene oxide water nanofluid flow between two non-parallel walls for both converging/diverging cases. Based on achieved results, an increase in the magnetic field intensity was found to have a strong stabilizing effect on the results for both diverging and converging channel geometries. The results show that the non-dimensional parameters have a strong influence on the temperature profile. The main findings are summarized as follows:-The thickness of thermal boundary layer decreases with increment in solid volume fraction of nanofluid due to higher heat transfer.-Nusselt number is an increasing function of Reynolds number, solid volume fraction and Eckert number.-Skin friction coefficient is an increasing function of Reynolds number and opening angle but decease function of Hartmann number.-The comparison between analytical results and numerical ones achieved by forth order Runge Kutta method, revealed that GOHAM can be simple, powerful and efficient techniques for finding analytical solutions in science and engineering non-linear differential equations.