Computational study of micro-polar nanofluid past a spinning disk with non-Fourier's heat and non-Fick's mass flux models

Abstract

In this study, the flow of micro-polar nanofluid past a spinning disk with non-Fourier's heat and non-Fick's mass flux models has been scrutinized. The flow is considered under the effect of the concentration slip, velocity slip, convective heating, and radial magnetic field. Through boundary layer approximations, the acquired system of partial differential equations from conservations of mass, momentum, energy, and nanoparticles concentration was converted into ordinary differential equations using similarity transformation, and thereafter solved numerically by the bvp4c approach. Plots and tables are used to inspect and analyze the role of physical parameters on flow fields. It is evident from the results that the centrifugal, tangential, and angular velocities significantly deteriorate with an escalation of magnetic field constraints. Also, a declination in the motion of fluid flow along with the centrifugal and tangential surfaces happens with higher micro-rotation constraints. It is discovered from the results that the strengthening in angular velocity is caused by a higher micro-rotation slip parameter. Furthermore, heat relocation can be improved by higher magnetic field constraints, Brownian motion constraints, and thermal Biot number. However, it can be illustrated from the results that an enhancement in thermal relaxation constraint causes a reduction in temperature dissemination. The results also showed that an increment in concentration relaxation and concentration slip parameters causes a reduction in dissemination of concentration. The analysis of skin friction, wall couple stress, heat relocation rate, and mass relocation rate are premeditated via tables. This theoretical and numerical exploration is more helpful in industrial areas and in the field of biological research.