期刊
TRIBOLOGY INTERNATIONAL
卷 102, 期 -, 页码 182-197出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.triboint.2016.04.037
关键词
Temporal inertia effects; Convective inertia effects, and turbulence; Journal bearings; Extended Reynolds equation
资金
- Rotor Bearing Solutions International, LLC
The introduction of this paper serves as a review of previous studies on extending the Reynolds equation. This paper develops an extended Reynolds equation and includes turbulence and inertia effects. Use of low viscosity lubricants and/or high rotational speed applications yield high Reynolds and high reduced Reynolds numbers. Our approach fully realizes the convective inertia effects on the static and dynamic properties of journal bearings as nonlinear with reduced Reynolds number. Two types of temporal inertia terms are identified for the first time: primary and secondary, in both laminar and turbulent regimes. The contribution of the secondary inertia effects can be up to 30% of the lubricant added mass coefficients. Lubricant added mass coefficients are potentially comparable to journal mass. (C) 2016 Elsevier Ltd. All rights reserved.
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