EFFECT OF SLIP VELOCITY AND BEARING DEFORMATION ON THE PERFORMANCE OF A MAGNETIC FLUID BASED ROUGH POROUS TRUNCATED CONICAL PLATES

An attempt has been made to discuss the behaviour of a magnetic fluid based squeeze film between rough porous truncated conical plates by taking into consideration the effects of bearing deformation and slip velocity. Taking recourse to a different type of probability density function, the model of Christensen and Tonder has been adopted to evaluate the effect of transverse surface roughness and the concern stochastically averaged Reynolds’ type equation has been solved to derive the expression for pressure distribution. This results in the calculation of load carrying capacity. The graphical representations make it clear that although the combined effect of bearing deformation and slip velocity is relatively adverse the magnetic fluid lubricant saves the situation to a limited extent, at least in the case of the negatively skewed roughness. For an overall improvement of performance of bearing system, the slip parameter should be minimized. A suitable combination of aspect ratio and semi vertical angle may lead to some compensation for negative effect of deformation, especially when variance (negative) is involved.