Effect of Change in Radial Clearance on Pressure Variation of Fluid in Hydrodynamic Journal Bearing

Authors : İredia ERHUNMWUN, John AKPOBI

Pages : 31-36

Doi:10.22399/ijcesen.492548

View : 19 | Download : 11

Publication Date : 2019-03-31

Article Type : Research Paper

Abstract :This work entails the parametric study of the effect of the change in bearing radial clearance with pressure variation of the fluid insert ignore into journalissuearticles values(lubricant); in a hydrodynamic journal bearing was carried out. The classical Reynolds Equation was used to represent the pressure behaviour in the bearing. This study was carried out using the Galerkin Finite Element Method insert ignore into journalissuearticles values(GFEM);. The result obtained shows that the pressure increases from the ambient pressure which is taken to be zero and increases significantly till 145.3737 0 . At this point, the pressure is maximum with 1.955 MPa and then drop until it gets to 180 0 where the pressure equals the ambient pressure. Between angular displacements of 180 0 and 360 0 there were also pressure variations which were equal in magnitude with those between 0 0 and 360 0 but with different direction. From the foregoing, it is observed that as the radial clearance increases, the pressure in the bearing drops significantly. Therefore, in the design of journal bearings, the radial clearance should a high as possible to reduce the pressure in the bearing. The result obtained shows a strong positive correlation with existing result in literature.
Keywords : Hydrodynamic lubrication, Journal bearing, weak formulation, Radial clearance, Finite Element Method