Abstract
This study deals with mixed convection of Al2O3-Cu-water hybrid nanofluid in a wavy channel having a circular cylinder. A two-dimensional system of partial differential equations has been discretized by employing Galerkin finite element method. Numerical simulations are carried out for different ranges of the governing parameters such as Reynolds number (10 <= Re <= 200), nanoparticle volume fraction (0.01 <= phi <= 0.05) and wave amplitude (0.05 <= A <= 0.25). It is inferred that Reynolds number is a key factor in this study. As it rises, the fluid behavior switches from slower to faster mode. Average Nusselt number rises at lower wavy wall and with lift coefficient (C-L). The highest average Nusselt number is achieved at A = 0.05, which is promoting the heat transfer by roughly 200%. Furthermore, an enhancement in the nanoparticle volume fraction leads to the decrease in the local Nusselt number on upper wavy wall. The flow philosophy is presented in the form of isotherm contours, streamline contours and some appropriate plots.