Effect Of Transverse Surface Roughness On The Performance Of A Magnetic Fluid Based Two Layered Porous Inclined Slider Bearing

Efforts have been made to analyze the performance of two layered porous inclined slider bearing with transversely rough surfaces under the presence of a magnetic fluid lubricant. The external applied magnetic field is oblique to the lower surface. The surface roughness is characterized by a stochastic random variable with nonzero mean, variance and skewness. The associated stochastically averaged Reynolds’ equation is solved to obtain the pressure distribution leading to the calculation of load carrying capacity. Further, the expression for friction is derived and the position of centre of pressure has been determined. The computed results show that the bearing system registers a relatively better performance as compared to that of a bearing system dealing with a conventional lubricant. The transverse surface roughness induces an adverse effect on the steady state performance. Besides, providing an additional degree of freedom, this investigation offers some scopes for reducing the adverse effect of porosity and standard deviation by the positive effect of magnetization in the case of negatively skewed roughness when negative variance is involved. This investigation conclusively establishes that the porosity parameter plays a crucial role from design point of view even if a suitable value of the magnetization parameter has been chosen.

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