Homogeneous/heterogeneous reactions of the water based Cu, Al2O3 and SWCNTs on MHD Stagnation-point flow over stretching/shrinking sheet with generalized slip condition

Abstract

An investigation is performed to analyze thehomogeneous–heterogeneous reactions of water based Cu, Al₂O₃ and SWCNTs on MHD stagnation-point over a permeable stretching/shrinking sheet with generalized slip condition. In this study we employed the refined model of a homogeneous–heterogeneous reaction in boundary layer nanofluid flow with equal diffusivities for reactant and autocatalysis. The governing PDEs in terms of continuity, momentum and concentration are transformed into ODEs and then solved numerically using fourth or fifth order Runge-Kutta Fehlberg method with shooting technique. The results show that for the shrinking sheet, the concentration of SWCNTs-water of heterogeneous reaction is stronger as compare with homogeneous reaction. Comparison of the present results with previously published work is given and found in good agreement.

Keywords: Stagnation point flow, Nanofluids, Homogeneous-heterogeneous reaction, Shrinking sheet, SWCNTs-water, Slip condition.