The effect of magnetic field on double-diffusive natural convection in a square cavity filled with a fluid-saturated porous medium\r\nis studied numerically. The bottom wall is fully heated at a constant temperature, and the top wall is maintained at a constant cold\r\ntemperature.The right wall is fully salted to a high concentration, while the left wall is fully salted at a lower concentration than the\r\nright one. A magnetic force is applied on the cavity along the gravity force direction. The Darcymodel is used for the mathematical\r\nformulation of the fluid flow through porous media. The governing equations for heat and mass transfer are solved using the finite\r\nvolume method. The governing parameters of the present study are Rayleigh number (Ra), Lewis number (Le), buoyancy ratio (N),\r\nand Hartmann number (Ha). The numerical solutions were studied in the range of -10 = ?? = 10, 0 = Ha = 10, 50 = Ra = 500,\r\nand 10-4 = Le = 10.The results were discussed considering the effect of these parameters on the heat and mass transfer processes.\r\nThe results were presented in terms of streamlines, isotherms, isoconcentration, average Nusselt number, and average Sherwood\r\nnumber for different values of the governing parameters. In general, it has been found that the increase of magnetic force has an\r\neffect to retard the strength of the flow inside the cavity and reduce the heat and mass transfer processes. For high Hartmann\r\nnumber, the flow is almost suppressed.
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