Comparison between the Numerical Modelization Result and Experimental Pressure of Journal Bearing

This paper presents the comparison between the numerical modelization result pressure and the experimental pressure of the lubricated oil film for the hydrodynamic bearing. The pressure is calculated based on solving the Reynolds equation, the oil film thickness equation, and the equilibrium of the charge equation. These equations are discretized by a finite element mesh and are solved by using NewtonRaphson processes. The measured pressure of the oil film is determined at five different positions on the cross-section in the middle of the bearing according to the perimeter by pressure sensors. The results show the good agreement on the film pressures. However, the more load applied, the greater difference in value between the maximum of calculated pressure and measured pressure. When the rotation speed increases, the decrease in experimental pressure is more than the decrease in calculated pressure. The minimum pressure is slightly varied.