Tribology and Lubricants

  • 제19권3호
  • /
  • Pages.167-177
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  • 2003
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  • 2713-8011(pISSN)
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  • 2713-802X(eISSN)
한국트라이볼로지학회 (Korean Tribology Society)
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미세 표면 거칠기에 지배되는 박막 유동장 형태를 고려한 윤활거동

Thermohydrodynamic Analysis Considering Flow Field Patterns Between Roughness Surfaces

  • 김준현 (국민대학교 기계 자동차공학부) ;
  • 김주현 (국민대학교 기계 자동차공학부)
  • 발행 : 2003.06.01
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초록

The study deals with the development of a thermohydrodynamic (THD) computational procedure for evaluating the pressure, temperature and velocity distributions in fluid films with very rough geometry. A parametric investigation is performed to predict the bearing behaviors in the lubricating film having the absorbed layers and their interfaces determined by the rough surfaces with Gaussian distribution. The layers are expressed as functions of the standard deviations of each surface to characterize flow patterns between both the rough sur-faces. The velocity variations and the heat generation are assumed to occur in the central (shear) zone with the same bearing length and width. The coupled effect of surface roughness and shear zone dependency on hydrodynamic pressure and temperature has been found in non-contact mode. The procedure confirms the numerically determined relationship between the pressure and film gap on condition that its roughness magnitude is smaller than the fluid film thickness.

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참고문헌

  1. J.Trib. v.116 Non-Newtonian and Thermal Effects on Film Generation and Traction Reduction in EHL Line Contact Hsiao,H­S.S.;Hamrock,J.H. https://doi.org/10.1115/1.2928883
  2. J.Trib. v.112 The High Shear Stress Rheology of Liquid Lubricants at Pressure of 2 to 200 Mpa Bair,S.;Winer,W.O. https://doi.org/10.1115/1.2920248
  3. J. Lubr. Tech. v.103 Rheological and Thermal Effects in Lubricated E.H.D. Contacts Houpert,L.;Flamand,L.;Berthe D.
  4. Proc. Instn. Mech. Engineers v.184 Stochastic Models for Hydrodynamic Lubrication of Rough Surfaces Christensen,H. https://doi.org/10.1243/PIME_PROC_1969_184_074_02
  5. J. Lub. Tech. v.100 no.1 An Average Flow Model for Determining Effects of Three-Dimensional Roughness on Partial Hydrodynamic Lubrication Patir,N,;Cheng,H.S. https://doi.org/10.1115/1.3453103
  6. J.Trib. v.120 Effects of Film Temperature on Piston-Ring Lubrication for Refrigeration Compressors Considering Surface Roughness Nakai,H.;Ino,N.;Hashimoto,H. https://doi.org/10.1115/1.2834419
  7. J. Applied Mechanics v.49 On the Mean Reynolds equation in the Presence of Homogeneous Random Surface Roughness Phan-Thien,N. https://doi.org/10.1115/1.3162484
  8. J.Trib. v.118 Thermohydrodynamic Analysis of High-Speed Journal Bearings With Surface Roughness Hashimoto,H. https://doi.org/10.1115/1.2831595
  9. J.Trib. v.119 Thermohydrodynamic Analysis of Submerged Oil Journal Bearings Considering Surface Roughness Effects Ramesh,J.;Majumdar,B.C.;Rao,N.S. https://doi.org/10.1115/1.2832442
  10. Wear v.49 A New Theory of Lubrication for Rough Surfaces Shulka,J.B. https://doi.org/10.1016/0043-1648(78)90021-2
  11. J.Trib. v.120 Surface Roughness Effects in Hydrodynamic Lubrication Involving the Mixture of Two Fluids Li,W­L. https://doi.org/10.1115/1.2833778
  12. Appl. Sci. Res. v.1 A Calculation of the Viscous Force Exerted by a Flowing Fluid on a Dense Swarm of Particle Brinkman,H.C. https://doi.org/10.1007/BF02120313
  13. Can. J. Chem. Eng. v.52 Practical Significance of Brinkman's Extension of Darcy's Raw Neagle,G.;Nader,W. https://doi.org/10.1002/cjce.5450520407
  14. J.Trib. v.122 Thermohydrodynamic Lubrication Analysis Incorporating Bingham Rheological Model Kim,J.H.;Seireg,A.A. https://doi.org/10.1115/1.555336
  15. J.Trib. v.114 Experimental Study of Tilting-Pad Journal Bearings-Comparison With Theoretical Thermoelastohydrodynamic Results Fillon,M.;Bligoud,J-C.;Frene,J. https://doi.org/10.1115/1.2920920
  16. J.Trib. v.105 A Study of the Thermohydrodynamic Performance of a Plain Journal Bearing Comparison Between Theory and Experiments Ferron,J.;Frene,J;Boncompain,R.