Abstract
Abstract A novel shape of cavity filled by Fe3O4-water nanofluids and porous media associated with natural convection under a constant inclined magnetic field has been studied. A novel model for viscosity named magnetic field dependent (MFD) viscosity is applied. The effects of Darcy, Hartmann and Rayleigh numbers, inclination angle and the cavity aspect ratio on heat and flow fields characteristics have been examined. The results represent that more the heat transfer rate has been constrained with any increment in the Hartmann number and therefore, the magnetic field can be utilized as an excellent controller of the heat transfer. Further, it is inferred that more values of the aspect ratio give always a greater average Nusselt number, at a given Ra.
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