Numerical study for Carreau nanofluid flow over a convectively heated nonlinear stretching surface with chemically reactive species

An analysis has been carried out to study a problem of the boundary-layer flow of Carreau nanofluid over a non-linearly stretched sheet with chemical reaction and the heat generation/absorption in a porous medium. A power-law model includes a two-phase model for Carreau nanofluid with a convective condition. The governing PDEs with the corresponding boundary conditions are modified to a system of non-linear ODEs with the appropriate boundary conditions by picking local similarity conversions and solved numerically by using Runge-Kutta-Fehlberg 4th-5th order numerical method (RKF45) on based shooting technique. This investigation discusses the effects of study parameters like the porosity parameter K-1, the heat source (lambda > 0) or sink (lambda < 0) parameter, the chemical reaction parameter gamma(1) and the Biot number Bi on flow velocity, temperature and nanofluid volume fraction in addition to the heat and mass transfer rates tabular and graphically. A comparative study is likewise revealed showing the comparison of current results with previously published data. (C) 2019 Elsevier B.V. All rights reserved.