Application of Navier-Stokes equation to lubrication

Compared with the results of commonly used Reynolds equation, numerical solutions ofNavier-Stokes and continuity equations are given for lubricant films in an oil wedge and a Rayleighbearing. Characteristic length ratio (L/L), one important parameter in the assumptions of Rey-nolds theory, is discussed in detail to analyse the difference. Some special jumping phenomenaappear around Rayleigh step, the increment from average value is up to 28%, which may aggra-vate the wearing of the step tip.