Page 136 - 摩擦学学报2025年第9期

第 45 卷 第 9 期 摩擦学学报（中英文） Vol 45 No 9
2025 年 9 月 Tribology Sept, 2025

DOI: 10.16078/j.tribology.2024099 CSTR: 32261.14.j.tribology.2024099

张玉言, 倪爱国, 马晨波, 徐涛, 陈圣军, 孙见君. 环下润滑高速球轴承流固耦合传热特性研究[J]. 摩擦学学报（中英文）, 2025,
45(9): 1390−1399. ZHANG Yuyan, NI Aiguo, MA Chenbo, XU Tao, CHEN Shengjun, SUN Jianjun. Fluid-Solid Coupled Heat
Transfer Characteristics of High-Speed Ball Bearings with Under-Race Lubrication[J]. Tribology, 2025, 45(9): 1390−1399.

环下润滑高速球轴承流固耦合传热特性研究

张玉言, 倪爱国, 马晨波 , 徐 涛, 陈圣军, 孙见君
*
(南京林业大学 机械电子工程学院，江苏 南京 210037)

摘 要: 温升高是影响航空发动机高速滚动轴承服役性能的核心，而解决该问题的前提是温度的预测. 针对该问题，
结合摩擦生热模型、两相流模型和多重坐标系法建立了航空发动机三点接触球轴承环下润滑流固耦合传热模型，
分析了滚动体自转、轴承转速、供油速度和保持架结构参数对轴承热特性的影响. 结果表明：轴承转速较低时，滚动
体自转会降低腔内油相体积，而轴承转速较高时则与之相反，且滚动体自转会显著降低其自身温度；随轴承转速的
增大，内外圈平均温度显著上升；随供油速度的增大，内外圈平均温度先降低后升高；随保持架宽度的增加，内圈平
均温度升高，外圈平均温度略微降低；随保持架兜孔直径的增加，内外圈平均温度略有升高；随保持架厚度的增加，内
圈平均温度先降低后显著升高，外圈平均温度变化较小. 研究结果为降低环下润滑高速球轴承的温升提供了依据.
关键词: 高速球轴承; 环下润滑; 热特性; 滚动体自转; 保持架
中图分类号: TH117.2 文献标志码: A 文章编号: 1004-0595(2025)09–1390–10

Fluid-Solid Coupled Heat Transfer Characteristics of High-Speed

Ball Bearings with Under-Race Lubrication

*
ZHANG Yuyan, NI Aiguo, MA Chenbo , XU Tao, CHEN Shengjun, SUN Jianjun

(College of Mechanical and Electronic Engineering, Nanjing Forestry University, Jiangsu Nanjing 210037, China)
Abstract: High temperature rise is one of the critical factors influencing the service performance of high-speed rolling
bearings used in the main shaft of high thrust-to-weight ratio aviation engines. The prerequisite for addressing this issue
is to predict temperature. The magnitude of temperature in the bearing depends on both the heat generation and heat
transfer. Heat is generated mainly due to the frictional heat inside the bearing, while it is dissipated primarily through the
convection of lubricant which is related to the lubricant flow inside the bearing cavity. Aviation engine bearings
typically employ the under-race lubrication method in which oil is supplied through under-race oil holes, then enters into
the bearing cavity, mixes with the ambient air, and finally forms a two-phase lubrication environment. The degrees of
mixing and flow characteristics of the two-phase flow have an impact on the heat dissipation of the bearing, which
makes it challenging to predict bearing temperature. To address this issue, a fluid-solid coupled heat transfer model for
aero-engine three-point contact ball bearings with under-race lubrication was established through combining with the
bearing dynamics model, frictional heat generation model, two-phase flow model and multiple reference frame method.
After numerical simulations of this model, the effects of rolling element self-rotation, bearing rotational speed, oil supply
velocity and cage structural parameters on the thermal characteristics of the bearing were analyzed. The results indicated

Received 16 May 2024, revised 2 August 2024, accepted 5 August 2024, available online 30 September 2024.
*Corresponding author. E-mail: machenbo@njfu.edu.cn, Tel: +86-13401974109.
This project was supported by the Jiangsu Province Scientific and Technological Achievements Transformation Project
(BA2023050).
江苏省科技成果转化项目(BA2023050)资助.