R. V. M. S. S. Kiran Kumar and S. Vijaya Kumar Varma

DOI: 10.14456/sjst-psu.2019.15

pp. 123 - 135

Abstract

An analysis is carried out to examine the stagnation point flow of a nanofluid over a stretching surface through a
porous medium in the presence of radiation and dissipation. The Buongiorno nanofluid model is incorporated in this study. The
arising set of governing partial differential equations (PDE’ s) of the flow is transformed into coupled non-linear ordinary
differentials equations (ODE’ s) with the help of appropriate similarity transformations and then solved numerically using
boundary value problem default solver in MATLAB bvp4c package. To reveal the effects of the controlling parameters on the
velocity, temperature, species concentration, the friction factor coefficient, the rate of heat and mass transfer coefficients are
presented in graphical and tabular forms. It is found that the surface temperature in motivated with rising values of thermal
radiation and thermophoresis parameters. From this we concluded that for heat enhancement processes thermal radiation and
thermophoresis are very useful.

Keywords

• MHD
• porous medium
• stagnation point flow
• viscous dissipation
• thermal radiation