国外文献 > 1.轴承 > 1. 基础理论与机制 > 承载与性能
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| 标 题： |
A new modified boundary slip model for thrust bearing performance under fluid-thermal-structure interaction regime
一种适用于流体-热-结构相互作用环境下推力轴承性能的新型修正边界滑移模型 |
| 作 者： |
Xiong, Cheng
Xu, Bo
Jiang, Yulong
Lu, Xiangyu
Chen, Zhenqian |
| 关键词： |
Boundary slip [边界滑移]
Aerodynamic thrust bearing [ 空气动力式推力轴承]
Load capacity [ 载重能力]
Thermal performance [ 热性能]
GAS-LUBRICATED BEARING [ 气体润滑轴承]
HEAT-TRANSFER [ 热传递]
TANGENTIAL MOMENTUM [ 切向动量]
JOURNAL BEARING [ 期刊装订]
FLOW [ FLOW]
MICROCHANNELS [ （注：此部分内容似乎缺失了具体的英文原文微通道]
BEHAVIORS [ 行為]
FILM [ 行動电影] |
| 出版年： |
2022 |
| 期刊名： |
Industrial Lubrication and Tribology
工业润滑与摩擦学 |
| 年卷期： |
2022, vol.74, no.9 |
| 摘 要： |
Purpose This study aims to investigate the thermohydrodynamic (THD) and thermoelastohydrodynamic (TEHD) performance of an air-lubricated thrust bearing under different slip conditions, especially the slip length effect. Design/methodology/approach In this study, a new modified boundary slip model was established to investigate thrust bearing performance. The THD and TEHD bearing characteristic distribution was analyzed with fluid-thermal-structure interaction approach. The effect of the slip length on the bearing performance was studied using various bearing structure parameters. Findings The increased slip length changed the classical feature distribution of the film pressure and temperature. The sacrifice of the bearing load capacity effectively compensated for the aerodynamic thermal effect and friction torque under the slip condition. The TEHD model has a lower film pressure and load capacity than the THD model. However, it also has lower film temperature, lower friction torque and smaller Knudsen number (Kn). Originality/value The bearing THD and TEHD performances of the modified boundary slip model were compared with those of a traditional no-slip bearing. The results help to guide the selection of the bearing surface materials and processing technology of rotor and foil, so as to fully control the degree of slip and make use of it.
目的 本研究旨在探究在不同滑动条件下，空气润滑推力轴承的热流体动力（THD）和热弹性流体动力（TEHD）性能，特别是滑动长度效应。设计/方法/流程 在本研究中，建立了一个新的改进的边界滑动模型以研究推力轴承的性能。采用流体-热-结构相互作用方法分析了推力轴承的热流体动力和热弹性流体动力特性分布。通过各种轴承结构参数研究了滑动长度对轴承性能的影响。结果 滑动长度的增加改变了膜压力和温度的经典特征分布。在滑动条件下，牺牲了轴承的承载能力，但有效地补偿了气动热效应和摩擦扭矩。TEHD 模型的膜压力和承载能力低于 THD 模型。然而，它的膜温度更低、摩擦扭矩更小以及克努森数（Kn）更小。原创性/价值 与传统的无滑动轴承相比，改进的边界滑动模型所描述的轴承热流体动力和热弹性流体动力性能进行了比较。这些结果有助于指导转子和箔片的轴承表面材料的选择以及加工工艺的确定，从而能够充分控制滑动程度并加以利用。 |
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