On couple-stress fluid heated from below in porous medium in the presence of rotation
A layer of a couple-stress fluid heated from below in a porous medium is considered to include the effect of uniform rotation. For the case of stationary convection, the couple stress may hasten the onset of convection in the presence of rotation while in the absence of rotation, it always postpones the onset of convection. For the case of stationary convection, rotation postpones the onset of convection. Graphs have been plotted by giving numerical values to the parameters, to depict the stability characteristics. Rotation is found to introduce oscillatory modes in the system, which were non-existent in its absence. A sufficient condition for the non-existence of overstability is obtained.
Bibliogr., 8 poz., wykr.