Influence of slip boundary conditions on the flow characteristics of sutterby mhd fluids over stretching surfaces

Abstract

The application of multiple slip mechanisms in non-Newtonian fluid transport arises in various engineering processes, including lubrication, polymer extrusion, surface coating, and drag reduction in pipelines. This study investigates the effects of velocity and thermal slip on the flow and thermophysical behaviour of a magnetohydrodynamic (MHD) Sutterby fluid over a stretching surface. The mathematical model incorporates heat generation, nonlinear radiative heat transfer, thermal diffusion, diffusion–thermo effects, and chemical reactions under slip and convective boundary conditions. Using similarity transformations, the governing nonlinear partial differential equations are reduced to a system of stiff ordinary differential equations and solved numerically via the spectral quasi-linearization method implemented in MATLAB. The accuracy of the numerical scheme is confirmed through comparisons with previously published results, showing strong agreement. The findings reveal that the temperature decreases with increasing Prandtl number and thermal slip, while higher values of the chemical reaction, Dufour, and velocity slip parameters collectively diminish the concentration field.