Tribology and Lubricants

Korean Tribology Society (한국트라이볼로지학회)
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Thermohydrodynamic Bubbly Lubrication Analysis of High-Speed Journal Bearing

공기 혼합오일에 대한 고속 저어널 베어링 열유체 윤활 해석

  • 전상명 (국민대학교 자동차공학 전문대학원)
  • Published : 2001.08.01
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Abstract

The influence of aerated oil on high-speed journal bearing Is examined by thermohydrodynamic lubrication theory to lubrication with mixtures of a Newtonian liquid and an ideal gas. For this purpose, analytical models for viscosity and density of aerated oil in fluid-film bearing are applied. Convection to the walls, mixing with supply oil and re-circulating oil, and some degree of journal misalignment are considered. The results show that deliberate oil aeration can increase the load capacity of high-speed plain Journal bearing. And the load capacity is increased more by oil aeration under the conditions of shaft misalignment and higher speed.

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References

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