Ferrofluid Lubrication of Rotating Curved Rough Porous Circular Plates and Effect of Bearing’s Deformation

This investigation deals with Ferrofluid-based squeeze film performance in rotating curved transversely rough porous circular plates taking bearing deformation into consideration. The results suggest that the transverse surface roughness induces an adverse effect on the performance characteristics, while the magnetic fluid lubricant results in an improved performance. It is found that the combined effect of rotation and deformation causes significantly reduced load carrying capacity. This reduction in load carrying capacity comes at a critical phase when higher values of porosity and standard deviation are involved. However, it is revealed that the adverse effect of porosity, deformation and standard deviation can be compensated up to some extent by the positive effect of magnetic fluid lubricant in the case of negatively skewed roughness by properly choosing curvature parameters. To compensate, the rotational inertia needs to have smaller values.