| Autor: |
D. Ives, W.B. Rowe, P.G. Morton, W. Weston |
| Rok vydání: |
1989 |
| Předmět: |
|
| DOI: |
10.1016/s0167-8922(08)70221-9 |
| Popis: |
Previous work conducted on hybrid journal bearings has shown that a combination of hydrostatic and hydrodynamic lubrication principles leads to good load support for a range of speeds (including zero speed). Conventional generator bearings were identified as a typical application of high speed heavily loaded hybrid bearings, which require the jacking capability to reduce start-up wear. This work presents a theoretical investigation of a conventional jacking type generator bearing and an alternative slot entry configuration. The predictions show that optimisation of bearing geometry carried out in either the laminar or superlaminar flow regime produces the same basic bearing geometry. This indicates that simple laminar theory may be used for optimisation of bearing geometries, no matter which regime the bearing is to operate in. The work further shows that an increase in load support can be obtained by optimising the conventional generator bearing. The predictions show that further increases in load support could possibly be achieved by adopting an optimised slot entry configuration. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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