NUMERICAL INVESTIGATION OF SISKO NANOFLUID OVER A NONLINEAR STRETCHING SHEET WITH CONVECTIVE BOUNDARY CONDITIONS

In this article, a steady laminar boundary layer flow resulting from nonlinear stretching of a flat sheet in a Sisko nanofluid has been numerically investigated. The Sisko nanofluid model incorporates the effect of heat source/sink, Brownian diffusion, thermophoresis, temperature-dependent thermal conductivity, and viscous dissipation. The boundary conditions are taken as convective. The resulting nonlinear ordinary differential equations (ODEs) with corresponding boundary conditions are solved using a finite difference method in MATLAB. A comparative analysis is performed to validate the accuracy of the proposed model. The impact of emerging parameters on velocity and temperature fields are presented through graphs. Moreover, the impact of physical parameters on skin friction, heat transfer, and the mass transfer rate is calculated and elucidated through tables for both Newtonian and non-Newtonian fluids. The obtained results revealed that the rate of heat transfer enhances with an increase in thermal Biot number (Bi*), Sisko material parameter (A*), and heat generation parameter (Q* < 0), whereas it shows a reverse behavior for the thermal conductivity parameter (o*), thermophoresis parameter (Nt*), Brownian diffusion parameter (Nb*), and heat absorption parameter (Q* > 0).