考虑热效应的人字槽滑动轴承与推力轴承组合的数值研究

IF 1.5 4区 工程技术 Q3 MECHANICS
Chin-Cheng Wang, Jyun-Ting Lin
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引用次数: 2

摘要

通过求解Navier-Stokes方程和能量方程对人字槽滑动轴承进行了分析。众所周知,流体动力轴承的承载能力可能受到高温和低油粘度的影响。因此,本研究的主要目的是了解不同油液粘度和偏心比下流体动力式高压壁面泵的压力分布。本文研究了3种不同的配置,即HGJB、HGJB与推力轴承组合、HGJB与沟槽推力轴承组合。还讨论了承载能力和姿态角随偏心比的变化等承载特性。结果表明,随着温度的升高,轴承的承载能力降低。压差也随着偏心比的增大而增大。高压区主要集中在HGJB的凹槽顶端。此外,由于姿态角低,可以使用组合HGJB和沟槽推力轴承来稳定轴颈。这些发现可能有助于和促进未来适合在温暖和炎热环境中工作的流体动力轴承的设计。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Numerical study of hydrodynamic herringbone-grooved journal bearings combined with thrust bearings considering thermal effects
Hydrodynamic herringbone-grooved journal bearings (HGJBs) are analyzed by solving Navier–Stokes and energy equations. It is well known that the load capacity of hydrodynamic bearings may be affected by high temperatures and low oil viscosity. Therefore, the main objective of this study is to understand the pressure distribution of hydrodynamic HGJBs under different oil viscosity and eccentricity ratios. In this paper, 3 different configurations are studied, namely, a HGJB, a combined HGJB and thrust bearing, and a combined HGJB and grooved thrust bearing. The bearing characteristics, such as load capacity and attitude angle that vary with different eccentricity ratios, are also discussed. The results show that the load capacity of the bearing decreases with increasing temperature. The pressure difference also increases as the eccentricity ratio increases. The high-pressure region is concentrated at the tip of the groove for the HGJB. In addition, the combined HGJB and grooved thrust bearing can be used to stabilize the journal because of the low attitude angle. These findings may help and facilitate the design of hydrodynamic bearings suitable for working in warm and hot environments in the future.
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来源期刊
Journal of Mechanics
Journal of Mechanics 物理-力学
CiteScore
3.20
自引率
11.80%
发文量
20
审稿时长
6 months
期刊介绍: The objective of the Journal of Mechanics is to provide an international forum to foster exchange of ideas among mechanics communities in different parts of world. The Journal of Mechanics publishes original research in all fields of theoretical and applied mechanics. The Journal especially welcomes papers that are related to recent technological advances. The contributions, which may be analytical, experimental or numerical, should be of significance to the progress of mechanics. Papers which are merely illustrations of established principles and procedures will generally not be accepted. Reports that are of technical interest are published as short articles. Review articles are published only by invitation.
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