Combined thin-film and Navier-Stokes analysis in high Reynolds number lubrication

被引:56
|
作者
Frêne, J
Arghir, M
Constantinescu, V
机构
[1] Univ Poitiers, Lab Solid Mech, F-86962 Futuroscope, France
[2] Univ Polytech Bucharest, Bucharest, Romania
关键词
D O I
10.1016/j.triboint.2005.07.004
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
The classical theory of hydrodynamic lubrication assumes that the flow regime is laminar and the inertia forces in the fluid film are negligible. For large bearings using low viscosity lubricant or for high speed, the inertia forces could be important and non laminar flow occurs. In that presentation a general view of non-laminar lubrication is presented. The different flow regimes, which occur in bearings and seals, are shown. The theories to obtain the characteristics of bearings operating in turbulent flow regime are presented. The effects of inertia forces in laminar and in turbulent flows are shown. Finally results obtained using the complete Navier Stokes equations are presented and it is shown how they are included in the classic lubrication theory. (c) 2005 Elsevier Ltd. All rights reserved.
引用
收藏
页码:734 / 747
页数:14
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