Journal-Bearing Velocity Profiles for Small-Eccentricity and Moderate Modified Reynolds Numbers

The velocity profiles for an infinite, cylindrical bearing are obtained by means of a small-eccentricity perturbation calculation. The modified Reynolds number appears as a parameter, and velocity profiles are presented for modified Reynolds numbers of 10−3, 10−2, 10−1, 1, 10, and 102. The most significant difference in the velocity profiles for the various Reynolds numbers is the appearance of components which are 90 deg out of phase with the film thickness at the larger values of the modified Reynolds number. The consequences of these components are discussed.