  The present work deals with homogeneous and isotropic FLRW model of the
Universe having a system of non-interacting diffusive cosmic fluids with
barotropic equation of state (constant or variable equation of state
parameter). Due to diffusive nature of the cosmic fluids, the divergence of the
energy momentum tensor is chosen to be proportional to the diffusive current.
The thermodynamic stability analysis of individual fluids is done and the
stability conditions are expressed as restrictions on the equation of state
parameter.
