Magnetic fluid based squeze film behaviour between rotating porous circular plates with a concentric circular pocket and surface roughness effects

Efforts have been made to analyze the magnetic fluid based squeeze film between rotating porous circular plates with a concentric pocket. The porous housing is considered to be elastically negligibly deformable with its contact surface rough. The stochastic film thickness characterizing the roughness is considered to be asymmetric with zero mean and non-zero variance. The modified Reynolds' equation is solved in order to get pressure distribution which in turn, is used to obtain the expression for load carrying capacity. Then by making use of this expression we find the response time. These expressions are numerically computed and the results are presented graphically as well as in a tabular form. It is observed that the presence of pocket and the roughness of the surfaces affect the performance of the bearing adversely. However, the performance of the bearing gets enhanced due to negatively skewed roughness and the magnetic fluid.