Dynamics of slip phenomenon in micropolar nanofluid flowing over a stretchable disk with Arrhenius activation energy

Abstract

An incompressible, laminar, and electrically conducting micropolar nanofluid flowing above a stretchable disk is examined. The surface is located in the plane $z=0$ and the axi-symmetric flow occupies its space in the region $\mathrm{z}\ge 0$ . The activation energy is considered in concentration equation of the flow model. The uniform temperature and nanofluid volume fraction are assumed at the surface. The approach of similarity transformations is utilized to normalize the governing flow equations. The resulting system is then solved using Runge-Kutta-Fehlberg (RKF-45) solver to obtain the graphical and numerical results of various dimensionless physical variables. It is scrutinized that the porosity parameter is important in the reduction of radial velocity. The microrotation curves are enhanced magnitude wise due to enhancement in the vortex viscosity parameter. It is also perceived that the concentration field is enhanced against the increasing activation energy parameter. Temperature is augmented by increasing the thermophoresis and Brownian movement parameters while the heat transport rate is reduced by the larger thermophoresis and Brownian movement parameters. Concentration field is reduced by the larger Brownian movement parameter while enhanced against the higher thermophoresis parameter.