Lubrication of short porous journal bearings - use of the Brinkman-extended Darcy model

Hydrodynamic lubrication of porous journal bearings using a modified Brinkman-extended Darcy model

Investigation of slip effects in plane porous journal bearings

Porous metal bearings — A critical review

Pressure distributions in the oil film of a porous journal bearing are investigated theoretically and experimentally under hydrodynamic lubrication conditions. The circumferential boundary condition for the oil-film pressure is obtained by applying an integral momentum equation to the oil-film region in the bearing clearance. The oil-film pressure distributions are numerically solved using this momentum equation and taking into consideration the balance between oil fed into the clearance and that lost from it. The present analysis shows the occurrence of a negative film pressure before the trailing end of the oil-film region. The experimental results confirm the existence of this negative film pressure. Furthermore, the angular position of the trailing end of the oil-film region obtained in the present analysis moves toward the downstream region, yielding better agreement with the measured and calculated film regions than was found in out previous analysis based on the quasi-Reynolds boundary condition.

W. T. Rouleau

Papers

Hydrodynamic Porous Journal Bearings. Part I—Finite Full Bearings