ABSTRACT

The boundary layer flow, heat and mass transfer in a quiescent nanofluid driven by a continuous stretching sheet is significant in numerous engineering and industrial processes. Nanofluids posses enhanced thermo physical properties which make them more superior than convectional fluids. This study investigates numerically heat and mass transfer of asteady laminar,viscous incompressible electrically conducting micro polar nanofluid past a porous medium and over a sheet that is stretching in nature and in the presence of viscous dissipation. A uniform magnetic field is applied towards the direction of the flow. The governing non linear boundary layer equations are converted to a system of linear ordinary differential equations by employing appropriate similarity transformations. The ordinary differential equations together with the boundary equations are then be solved numerically by Runge–Kutta fourth order method with a shooting technique. The influence of Eckert number ( ), porous parameter ( ), Prandtl number ( ), Schmidt number ( ) on velocity, temperature and concentration profiles are shown graphically. The results show that increasing both the magnetic field and the Schmidt number decreases the fluid velocity, while the magnetic field and the Eckert numbers increases the fluid’s temperature.