Nonsimilar forced convection analysis of magneto nanofluid (CNTs plus Water) flow in Darcy-Forchheimer porous media subjected to thermal radiations and heat generation/absorption

Aspiration of this research is to study the impacts of nanomaterials on magnetohydrodynamics (MHD) Darcy-Forchheimer nanofluid flow over a stretched surface with the influences of heat generation/absorption, thermal radiations and second order velocity slip condition. Carbon nanotubes (SWCNTs and MWCNTs) are considered as nanomaterials. To simulate the momentum and energy equations, boundary layer approximations and Khanfer model are adapted. The governing system is transformed into nondimensional coupled nonlinear partial differential equations (PDEs) through nonsimilar modeling. Transformed equations are analytically approximated by employing the local nonsimilarity (LNS) technique up to the second truncation level in association with the numerical algorithm bvp4c (MATLAB built-in solver). Behavior of relevant flow parameters against the velocity and temperature profiles are graphically depicted. Furthermore, the surface drag force and heat transfer rate are reviewed in tabular form. It is noted from the obtained results that the thermal field augmented with increasing magnetic parameter in the flow regime. An enhancement in both slip parameters leads to decline in velocity field and associated boundary layer thickness for both SWCNT and MWCNT nanoparticles. Magnitude of the skin friction coefficient increases for higher estimations of Hartmann number. This research is of great help for research works on industrial nanofluids applications.