Soret and Dufour effects on thermosolutal convection in Jeffrey nanofluid in the presence of porous medium

In this paper the thermosolutal instability of Jeffrey nanofluid in a porous medium is considered. The Navier-Stokes equations of motion of the fluid are modified under the impact of the Jeffrey parameter and nanoparticles. From the linear stability analysis, based upon normal modes analysis method, the dispersion relation accounting for the effect of various parameters is derived. The effects of Jeffrey parameter , solutal Rayleigh number RS, medium porosity , nanoparticle Rayleigh number RN, thermo-nanofluid Lewis number Ln, thermosolutal Lewis number Le, modified diffusivity ratio NA, Dufour parameter NCT, and Soret parameter NTC, are analysed analytically and presented graphically.