An application of short bearing theory to analyse the effect of variable permeability on steady state performance of turbulent hydrodynamic porous journal bearings

The effect of variable permeability on steady state performance of turbulent porous journal bearings has been analysed following Constantinescu's turbulent lubrication theory. Variations in load capacity, coefficient of friction and end now are obtained as functions of feed parameter (beta), Reynolds number (Re), ratio of wall thickness to journal radius (H/R) and eccentricity ratio under the assumption of the short bearing approximation. It is observed that the effect of variable permeability is more pronounced with increase in bearing parameters such as beta, H/R and epsilon(0).