NUMERICAL SIMULATION OF HEAT TRANSFER CHARACTERISTICS IN THIN FILM FLOW OF MHD DISSIPATIVE CARREAU NANOFLUID PAST A STRETCHING SHEET WITH COFE2O4 NANOPARTICLES

G.P. Ashwinkumar, C. Sulochana

Abstract: In present days, the thermal and physical properties of magnetic-nanofluids are more effective by the influence of external magnetic fields and it also regulates the flow and heat transfer characteristics. With this incentive, this article addresses the heat transfer characteristics in thin liquid film flow of magnetic-nanofluid towards a stretching surface in the presence of viscous dissipation and aligned magnetic field with non uniform heat source/sink. For this study, we considered CoFe2O4 nanoparticles embedded in water. Numerical results are computed by adopting Runge-Kutta based shooting technique. The influence of various pertinent parameters on velocity and temperature profiles along with local Nusselt number and friction factor are thoroughly examined and discussed with the assistance of graphs and tables. It is found that aligned magnetic field regulates the momentum boundary layer and heat transfer rate. It is also observed that increasing the volume fraction of nanoparticles effectively enhances the thermal conductivity of CoFe2O4-water nanofluid.

Keywords: film flow, viscous dissipation, non-uniform heat source/sink, radiation, inclined magnetic field.

DOI: https://doi.org/10.15623/ijret.2016.0533004