Non-equilibrium thermal convection in an anisotropic porous layer saturated with a viscoelastic fluid.

The study of non-equilibrium thermal convection in an anisotropic porous layer saturated with a visco-elastic fluid is carried out to find how the anisotropy and temperature affect onset convection. small perturbation method applied obtain linearized form equations are then solved by using normal mode technique. viscoelasticity considered taking Oldrovd-B momentum equation two separate expressions used for energy equation, these one represents solid anther medium. effect both on oscillatory stationary modes has been studied. Apart from conductivity ratio, diffusivity Darcy Prandtl number also observed presented graphically. stability system protected ratio. But mechanical ratio destabilizing mode.