Unsteady Power Law Nanofluid Flow Subjected to Electro-Magnetohydrodynamics with Active and Passive Nanoparticles Flux

Abstract

The heat and mass transfer characteristics of power-law nanofluid flow over a stretching sheet embedded in a porous medium with active and passive control of wall mass fluxes are explored in this research. Additionally, the formulation incorporates electromagnetohydrodynamic (EMHD), Brownian movement, and thermophoresis aspects in the flow problem. The solutions of formulated boundary layer fluid flow equations are represented via tabular and graphical demonstrations to study the impact of the leading parameters. MATLAB inbuilt bvp4c solver is utilized for numerical simulation of presented fluid flow theories. Physical elaboration of the graphs is given to recognize the influence of fluid flow, heat, and mass transport mechanisms in different rising conditions. Results show that the implication of magnetic field, unsteadiness, and porous medium restricts the fluid flow velocity while the electric field enhances it. Active control of nanoparticles dominates the velocity, temperature, and concentration profiles more than passively controlled conditions. The significance of the power-law index enclosed in the current study shows that the performance of pseudoplastic fluids (n < 1) is improved than that of dilatant fluids (n > 1).