Soret Dufour Driven Thermosolutal Instability of Darcy-maxwell Fluid

Linear stability of double diffusive convection of Darcy-Maxwell fluid with Soret and Dufour effects is investigated. The effects of the Soret and Dufour numbers, Lewis number, relaxation time and solutal Darcy Rayleigh number on the stationary and oscillatory convection are presented graphically. The Dufour number enhances the stability of Darcy-Maxwell fluid for stationary convection while it has a stabilizing character for overstability. The Soret number is to destabilize the system in case of both stationary and oscillatory modes. In the limiting case some previous results have been recovered.