Effects of non-inertial acceleration on the onset of convection in a second-order fluid-saturated porous medium

摘要

The paper deals with the linear stability analysis of a rotating second-order fluid-saturated porous medium. The eigenvalue is computed for free-free, isothermal boundary combinations by considering the Rivlin-Ericksen equation. The analysis predicts that the preferred mode of oscillatory motion is possible Only for higher rates of rotation and higher values of viscoelastic parameter. The effect of rotation is to Suppress the viscoelasticity of the fluid. The proposed model is best suited for viscoelastic fluids like DNA in Aqueous solution having viscosity similar to that of water (see Paul Kolodner, Int. Conf. On Non-New- Tonian Fluids, USA, 1998)