Onset of Linear and Nonlinear Thermosolutal Convection with Soret and Dufour Effects in a Porous Collector under a Uniform Magnetic Field

The present paper reports on an analytical and numerical study of combined Soret Dufour effects thermosolutal convection in a horizontal porous cavity saturated with electrically conducting binary fluid under magnetic field. walls the system are subject to vertical uniform fluxes heat mass, whereas assumed be adiabatic impermeable. main governing parameters problem Rayleigh, Hartmann, Soret, Lewis numbers, buoyancy ratio, enclosure aspect normalized porosity medium. An asymptotic parallel flow approximation is applied determine onset subcritical nonlinear convection. In addition, linear stability analysis performed predict explicitly thresholds for stationary, overstable oscillatory convection, Hopf bifurcation as functions parameters. effect field, have noticeable influence intensity convective flow, mass transfer rates, It found that imposition field delays its intensification can lead total suppression currents. rate increases number decreases vice versa rate.