Nanofluid convective heat transfer intensification in a porous circular cylinder

Nanofluid heat transfer intensification in a porous enclosure in existence of magnetic field is studied numerically using Non-Darcy model. Simulation has been done by means of CVFEM. Viscosity of Fe3O4-water is considered as a function of magnetic field. Roles of Darcy number ( D a ) , inclination angle ( ξ ) , Fe3O4-water volume fraction ( ϕ ) , Hartmann ( H a ) and Rayleigh ( R a ) numbers are demonstrated in outputs. Results illustrate that Nuave increases with increase of Ra and Darcy numbers. Isotherms become denser near the hot surface with augment of inclination angle and Darcy number. Temperature gradient reduces with augment of Habut it enhances with rise of inclination angle.