Tribology and Lubricants

Korean Tribology Society (한국트라이볼로지학회)
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The Effect of Dimensions and Location of Oil Grooves on the Static Performance of a Cylindrical Journal Bearing

급유홈의 크기와 위치가 원통형 저널 베어링의 정적성능에 미치는 영향

  • Son, Sang-Ik (School of Mechanical, Aerospace & Systems Engineering, KAIST) ;
  • Kim, Kyung-Woong (School of Mechanical, Aerospace & Systems Engineering, KAIST)
  • 손상익 (KAIST 기계항공시스템학부) ;
  • 김경웅 (KAIST 기계항공시스템학부)
  • Received : 2010.01.20
  • Accepted : 2010.05.04
  • Published : 2010.08.31
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Abstract

In this study, the effect of dimensions and location of oil grooves on the static performance of a cylindrical journal bearing is analyzed numerically. Axial length, circumferential length and location of oil grooves are considered as parameters. Cavitation occurs within the diverging region of a journal bearing. The distribution of cavitation region where cavitation occurs varies with dimensions and location of oil grooves and affects the performance of a journal bearing. Elrod's cavitation algorithm which implements JFO boundary conditions based on the principle of mass conservation at the interfaces between cavitation and full film region is adopted in order to consider the effect of cavitation. The result shows that parameters, especially location of oil grooves have a great effect on the static performance of a journal bearing.

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References

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