Numerical Heat and Mass Transfer of a Micropolar Fluids Flow with Magnetic Effect to Past a Stretching Sheet

Abstract

A heat and mass transfer and energy management problem of for hydromagnetic flow with magnetic effect micropolar fluids past through a stretching sheet has been studied. Governing equations are included continuity equation, momentum equation, angular momentum equation, energy equation and the concentration equation of a micropolar fluid have been analyzed by a combination of the similarity transformation and a accurate finite-difference method. These solutions are used to obtain distributions of the local convective heat transfer coefficient and the stretching sheet temperature. The ranges of these dimensionless parameters, the Prandtl number Pr, the magnetic parameter M, the material parameter K, the Eckert number Ec and the Schmidt number Sc are from 0.3 to 0.71, 0 to 20, 0 to 2, 0 to 0.8 and 0.5 to 10, respectively. The numerical results indicate that, an increase in the magnetic parameter gives a decrease in the values of the velocities and Nusselt number, or an increase in the values of the shear stress, couple stress at the surface, temperature and concentration. The material parameter has the opposite effect of magnetic field parameter on the values of the velocities, temperature, concentration, shear stress, Nusselt number and Schmidt number. The temperature decreases as the Prandtl number increases, or increases as the Eckert number increases. The concentration decreases as Schmidt number increases.