Effect of Magnetic Field on Double Diffusive Natural Convection Flow in a Closed Chamber using Nanofluid

In the present study, a numerical investigation has been conducted for the effect of magnetic field on double diffusive natural convection flow inside a square enclosure filled with Cu-H2O nanofluid. The governing equations of the present problem have been converted into non-dimensional form using a set of suitable transformation variables and then solved numerically employing Galerkin weighted residual finite element technique. The numerical solution has been carried out for different magnetic field strength, Rayleigh number and volume fraction of nanoparticles with fixed values of controlling parameters. The obtained results are presented in terms of streamlines, isotherms, iso-concentrations and rate of heat transfer. The results indicate that the influence of magnetic field inside the flow region leads to reduce the fluid movement. It is also observed that the heat transfer rate can be enhanced more for the effect of solid concentration of water/Cu nanofluid than water.