Magnetic Fluid-Based Squeeze Film Between Rotating Curved Rough Circular Plates

摘要

Efforts have been made to study an analyze the behaviour of a magnetic fluid based squeeze film between curved rough rotating circular plates when the rotating curved upper plate lying along a surface determined by an exponential function approaches the rotating curved lower plate along the surface governed by a hyperbolic function. The lubricant used here is a magnetic fluid in the presence of an external magnetic field oblique to the radial axis. The concern Reynolds equation is averaged with respect to the random roughness parameter and solved with appropriate boundary conditions. This is then applied to find out the expression for load carrying capacity. It is seen that the effects of surface roughness on the squeeze film characteristic depend on the pattern of roughness structure. The results show that the bearing system registers a considerably enhanced performance as compared to that of bearing system working with a conventional lubricant. This study tends to suggest that although, the bearing suffers owing to transverse roughness in general, there are ample scopes for obtaining a comparatively better performance in the case of negatively skewed roughness by properly choosing curvature parameters and rotation ratio especially when negative variance is involved.