Effect of Surface Roughness on the Performance of a Magnetic Fluid Based Parallel Plate Porous Slider Bearing with Slip Velocity

An endeavour has been made to investigate the performance of a transversely rough porous parallel plate slider bearing with slip velocity taking a magnetic fluid as the lubricant. The associated Reynolds equation is stochastically averaged with respect to the random roughness parameter characterizing the roughness. In view of suitable boundary conditions this equation is solved to obtain the pressure distribution resulting in the calculation of load carrying capacity. Besides, friction on the slider is also computed. The computed results presented in graphical form indicate that the magnetic fluid lubricant improves the performance of the bearing system. The negatively skewed roughness further increases the already increased load carrying capacity due to magnetization. This effect becomes more sharp when variance (-ve) is involved. Although, porosity, slip velocity and standard deviation decrease the load carrying capacity, this negative effect can be minimized by the magnetic fluid lubricant in the case of negatively skewed roughness. In addition, the friction remains unaltered.