Effect of thermal radiation and chemical reaction on MHD mixed convective heat and mass transfer in nanofluid flow due to nonlinear stretching surface through porous medium

Abstract

In the present study, the combined influence of chemical reaction, thermal radiation, thermophoresis, and Brownian motion on mixed convective heat and mass transfer in the boundary layer of moving magneto nanofluid due to a permeable stretching surface with a heat generation through a porous medium is investigated. The velocity, temperature, and mass concentration of the stretching surface are assumed to have nonlinear variations with the distance. The PDEs governing the study are converted into nondimensional ODEs containing a set of physical parameters. The resulting equations are solved computationally and the impacts of the thermo-physical factors are discussed. To proceed and build on the computational analysis for this work, the computational results are validated by comparing special cases of the present study to those in some earlier studies, and good agreement is obtained. The results show that the thermal boundary layer thickness is less than those for the momentum and mass transfer with factors of mixed convection, chemical reaction, nanoparticles volume fraction, the nonlinearity of the surface, and porous medium. In this view, these factors have a significant impact on many engineering applications such as in the cores of nuclear reactors, the manufacturing of polymers, metal layers, paper sheets, and biochemistry industries.