Dual stratified MHD hybrid nanofluid flow over wedge embedded in a Darcy-Forchheimer porous medium with viscous dissipation and Brownian motion

This study investigates MHD flow of a water-based hybrid nanofluid containing Ag and WO3 nanoparticles over a wedge surface embedded in Darcy-Forchheimer porous medium considering the impact of Brownian motion, viscous dissipation, Joule heating, chemical reaction and dual stratification. Using similarity transformation, the governing equations are converted to dimensionless ordinary differential equations, and are solved via MATLAB bvp4c solver. The influence of physical parameters on velocity, temperature and concentration profiles, frictional drag coefficient, Nusselt and Sherwood numbers is shown graphically. This study reveals that the velocity of the fluid declines due to the increasing values of Darcy-Forchheimer parameter while opposite impact due to Hartree pressure gradient. Fluctuation in temperature distribution of nanofluid boosts up for rising inputs of the Brownian motion parameter and the concentration profile drops for growing values of solutal stratification. Furthermore, higher values of the Brownian motion parameter enhance the Sherwood number and reduce the Nusselt number for both nanofluid and hybrid nanofluid cases. The Nusselt and Sherwood numbers decrease with increasing thermal and solutal stratification parameters, respectively. Adding 1% of Ag and WO3 nanoparticles into the base fluid increased frictional drag coefficient by 9.04% and 6.06%, respectively.