Flow analysis by Cattaneo–Christov heat flux in the presence of Thomson and Troian slip condition

Abstract

This communication considers entropy minimization in stagnation point flow of a hybrid nanofluid past a nonlinear permeable stretching sheet with Thomson and Troian boundary condition. Due to the porous medium, the Darcy–Forchheimer relation is added. The nonlinear thermal radiation, heat generation, and viscous dissipation by using Cattaneo–Christov heat flux model are explained. Further the influence of variable viscosity, activation energy, and variable mass diffusivity is taken into account. For first time, hybrid nanofluid consisting of carbon nanotubes with Thomson and Troian boundary conditions and induced MHD has been implemented and has not yet been studied. The finite difference method, i.e., bvp4c from Matlab, is utilized to solve the transformed ordinary differential equations (ODEs). This method has good certainty to solve this problem, compared to previous works. Comparison of simple nanofluid and hybrid nanofluid is graphically illustrated. It is noticed that the solid volume fraction decreases the velocity profile and enhances the temperature distribution. Further, compared to simple nanofluid, hybrid nanofluid has greater thermal conductivity and better heat transfer performance.