ABSTRACT
A hydrodynamic plane-slider is shown in Fig. 1-2 and the widely used hydro-
dynamic journal bearing is shown in Fig. 1-3. Hydrodynamic lubrication is the
fluid dynamic effect that generates a lubrication fluid film that completely
separates the sliding surfaces. The fluid film is in a thin clearance between two
surfaces in relative motion. The hydrodynamic effect generates a hydrodynamic
pressure wave in the fluid film that results in load-carrying capacity, in the sense
that the fluid film has sufficient pressure to carry the external load on the bearing.
The pressure wave is generated by a wedge of viscous lubricant drawn into the
clearance between the two converging surfaces or by a squeeze-film action.
