| 流体动力润滑的紊流理论模式 |
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| 引用本文： | 张直明,王小静,孙美丽.流体动力润滑的紊流理论模式[J].上海大学学报(英文版),2003,7(4):305-314. |
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| 作者姓名： | 张直明 王小静 孙美丽 |
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| 作者单位： | Research Institute of Bearings，Shanghai University，Shanghai 200072，China，Research Institute of Bearings，Shanghai University，Shanghai 200072，China，Research Institute of Bearings，Shanghai University，Shanghai 200072，China |
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| 基金项目： | theNationalNaturalScienceFoundationofChina (GrantNo .5 9775 0 3 5 )andDevelopingProgramofStateKeyBasicResearchofChina (GrantNo .G19980 2 0 3 17 4.2 ) |
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| 摘 要： | 1 IntroductionItiswellknownthatfluidflowsinsealsandbear ingsturnfromlaminarregimeintoturbulentonewhentheirReynoldsnumberbecomeshigherthanacriticalvalue .Theearliesttheoriesofhydrodynamiclubricationhavebeenbasedonthepresumptionofex istenceoflaminarflowregime .Inturbulentregime ,however ,thecharacteristicsofsealsandbearingsdif ferfromthepredictionsbytheoriessobased .Speciallubricationtheoriesbasedoncontemporaryturbulencemodelssincethelaterhalfof 190 0’swerethereforedevelopedtotaketheeffectsof…
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| 关 键 词： | 湍流 液压润滑 Couette流动 流场 |
| 收稿时间： | 11 September 2003 |
Turbulence models of hydrodynamic lubrication |
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| Zhang?Zhi-Ming,Wang?Xiao-Jing,Sun?Mei-Li.Turbulence models of hydrodynamic lubrication[J].Journal of Shanghai University(English Edition),2003,7(4):305-314. |
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| Authors: | Zhang Zhi-Ming Wang Xiao-Jing Sun Mei-Li |
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| Institution: | Research Institute of Bearings, Shanghai University, Shanghai 200072, China |
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| Abstract: | The main theoretical turbulence models for application to hydrodynamic lubrication problems were briefly reviewed, and the
course of their development and their fundamentals were explained. Predictions by these models on flow fields in turbulent
Couette flows and shear-induced countercurrent flows were compared to existing measurements, and Zhang & Zhang’s combined
κ-ɛ model was shown to have surpassingly satisfactory results. The method of application of this combined κ-ɛ model to high speed journal bearings and annular seals was summarized, and the predicted results were shown to be satisfactory
by comparisons with existing experiments of journal bearings and annular seals.
Project supported by the National Natural Science Foundation of China (Grant No. 59775035) and Developing Program of State
Key Basic Research of China (Grant No. G1998020317-4.2) |
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| Keywords: | hydrodynamic lubrication turbulence model bearing seal tribology |
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