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Boundary element method of multi‐lobe hydrodynamic lubrication bearing for numerical analysis in lubrication theory
Author(s) -
Dequan Yang
Publication year - 1992
Publication title -
international journal for numerical methods in engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.421
H-Index - 168
eISSN - 1097-0207
pISSN - 0029-5981
DOI - 10.1002/nme.1620340217
Subject(s) - lubrication , bearing (navigation) , fluid bearing , mechanics , vortex , finite element method , lubrication theory , boundary element method , flow (mathematics) , numerical analysis , lubricant , point (geometry) , materials science , mechanical engineering , engineering , structural engineering , geometry , physics , mathematics , mathematical analysis , astronomy
In the present paper, the hydrodynamic lubrication problems of multi‐lobe bearings are treated by the Boundary Element Method in lubrication theory. For example, we have made numerical calculations for elliptical bearings and three‐lobe bearings. The stress and pressure distributions on the bearings and the velocity fields of the lubricant are given. We also studied conditions for the occurrence of vortexes in the flow region. The numerical investigations have shown that the method is very effective in handling hydrodynamic lubrication problems and it can be used to study the vortex in arbitrary shape bearings. Furthermore, the method has some advantages of computational convenience and superior accuracy. Especially, the ending point of the oil film pressure can be ascertained when non‐linear terms are considered, and that is undoubtedly extremely important in studying hydrodynamic lubrication problems.