Effect of variable thermal conductivity and thermal radiation with CNTS suspended nanofluid over a stretching sheet with convective slip boundary conditions: Numerical study

Abstract

The problem of carbon nanotubes suspended magnetohydrodynamic (MHD) stagnation point flow over a stretching sheet for variable thermal conductivity with thermal radiation is studied in this paper. The boundary of the sheet are convective. The physical problem is modeled using a system of nonlinear partial differential equations and are then transformed into ordinary (similarity) differential equations using a proper transformation. These equations along with the corresponding boundary conditions are solved numerically using shooting technique. The solution is found to be dependent on the governing parameters. The results illustrated include the velocity and temperature profiles, as well as local skin-friction coefficient, the local Nusselt number and streamlines. Velocity profile and boundary layer thickness increases with the increase in nanoparticle volume fraction φ for SWCNT with Grashof number λ and Nanoparticle volume fraction φ for MWCNT with Grashof number λ.