Tribology and Lubricants

Korean Tribology Society (한국트라이볼로지학회)
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A Study on Thermohydrodynamic Turbulent Lubrication of High Speed Journal Bearing Considering Thermal Conditions on Walls

열전달 경계조건을 고려한 고속 저어널 베어링의 난류 열유체 윤활 연구

  • 전상명 (국민대학교 자동차공학 전문대학원) ;
  • 장시열 (국민대학교 자동차공학 전문대학원)
  • Published : 2000.06.01
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Abstract

Turbulence in journal bearing operation is examined and the thermal variability is studied for isothermal, convective and adiabatic conditions on the walls within some degree of journal misalignment. An efficient algorithm for the solution of the coupled turbulent Reynolds and energy equations is used to examine the effects of the various factors. The calculation data of turbulent analysis are compared with those of laminar analysis. Heat convection is found to play but a small role in determining friction and load. The friction distribution patterns through the journal bearing are now different with high values at the upstream region of the bearing due to the high speed and low temperature, and a sudden decrease past the pressure maximum.

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References

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