时变条件下滑动轴承系统的多物理场耦合分析

摘要/Abstract

摘要：

针对传统非耦合分析方法无法研究轴颈、油膜与轴瓦之间的相互作用以及普通流-固耦合方法无法真实反应轴承运转工况的问题，提出了一种融合计算流体动力学、流-固耦合和热流耦合的瞬态分析方法，分析了时变条件下轴承系统速度、压力和温度的多物理场耦合，并分析了空化现象的影响，精确计算了恒定载荷下的偏心率和温升场，以及从启动到稳定过程的轴心轨迹.同时，分别考虑腔结构、轴颈转速和载荷对油膜压力、偏心率、温升和气穴的影响，并将计算结果与相关文献的实验结果进行比较.结果表明：所得计算结果与实验结果较吻合；轴承的轴心轨迹呈螺旋形；油腔数目对轴心轨迹、气穴和温升的影响很大.

关键词: 轴承耦合系统, 多物理场耦合, 空化

Abstract:

Aimed at the problem that the non-coupling method cannot analyze the interaction of the bearing bush, lubricating oil and journal, and the problem that the normal FSI method cannot truly reflect the bearing’s working, a novel transient analysis method combined with the computational fluid dynamics (CFD), fluid-structure interaction (FSI), and thermal fluid-structure interaction (TFSI) was proposed. The multi-physical field coupling of the velocity field, pressure field and temperature field based on time-varying condition were studied, taking cavitations into consideration. Eccentricity, temperature rise, as well as the axial trajectory from the startup to the steady state, were accurately calculated under constant load. The effect of cavities, rotational speed, and load on the pressure, eccentricity, temperature rise, and cavitations was considered. The results obtained by the proprosed method agree well with the experimental results.

Key words: bearing coupled system, multi-physical field coupling, cavitations

中图分类号:

TH 133.31

王宁，魏正英，林起崟，陈渭. 时变条件下滑动轴承系统的多物理场耦合分析[J]. 上海交通大学学报（自然版）, 2014, 48(1): 6-11.

WANG Ning,WEI Zhengying,LIN Qiyin,CHEN Wei. Multi-Physical Field Coupling Analysis of Journal Bearing System under Time-Varying Condition[J]. Journal of Shanghai Jiaotong University, 2014, 48(1): 6-11.

参考文献

［1］温诗铸, 黄平. 摩擦学原理［M］. 2版. 北京: 清华大学出版社, 2002.

［2］Bouyer J, Fillon M. On the significance of thermal and deformation effects on a plain journal bearing subjected to severe operating conditions［J］. Journal of Tribology, 2004, 126(4): 819822.

［3］Chen P, Hahn E. Use of computational fluid dynamics in hydrodynamic lubrication［J］. Journal of Engineering Tribology, 1998, 212(6): 427436.

［4］Gertzos K, Nikolakopoulos P, Papadopoulos C. CFD analysis of journal bearing hydrodynamic lubrication by Bingham lubricant［J］. Tribology International, 2008, 41(12): 11901204.

［5］Hartinger M, Dumont M L, Ioannides S, et al. CFD modeling of a thermal and shearthinning elastohydrodynamic line contact［J］. Journal of Tribology, 2008, 130(4): 116.

［6］Guo Z, Hirano T, Kirk R G. Application of CFD analysis for rotating machinery［J］. Journal of Engineering for Gas Turbines and Power, 2005, 127(2): 445451.

［7］Shenoy S B, Pai R, Rao D, et al. Elastohydrodynamic lubrication analysis of full 360′ journal bearing using CFD and FSI techniques［J］. World Journal of Modelling and Simulation, 2009, 5(4): 315320.

［8］Liu H, Xu H, Ellison P J, et al. Application of computational fluid dynamics and fluidstructure interaction method to the lubrication study of a rotorbearing system［J］. Tribology Letters, 2010, 38(3): 325336.

［9］Li Q, Liu S, Pan X, et al. A new method for studying the 3D transient flow of misaligned journal bearings in flexible rotorbearing systems［J］. Journal of Zhejiang UniversityScience A, 2012, 13(4): 293310.

［10］Hong Y P, Chen D R, Kong X M, et al. Model of fluidstructure interaction and its applicationto elastohydrodynamic lubrication［J］. Computer Methods in Applied Mechanics and Engineering, 2002, 191(37): 42314240.

［11］Meruane V, Pascual R. Identification of nonlinear dynamic coefficients in plain journal bearings［J］. Tribology International, 2008, 41(8): 743754.

［12］张青雷, 卢修连, 朱均. 边界条件对滑动轴承性能的影响［J］. 润滑与密封, 2002(5)：1213.

ZHANG Qinglei, LU Xiulian, ZHU Jun. Boundary conditions effect on the performance of journal bearing［J］. Lubrication Engineering, 2002(5): 1213.

［13］Sun D, Brewe D E. Two reference time scales for studying the dynamic cavitation of liquid films［J］. Journal of Tribology, 1992, 114(3): 612615.

［14］Childs D, Hale K, Scharrer J. A test apparatus and facility to identify the rotordynamic coefficients of highspeed hydrostatic bearings［J］. Journal of Tribology, 1994, 116(2): 337344.

［15］San Andres L, Childs D, Yang Z. Turbulentflow hydrostatic bearings: Analysis and experimental results［J］. International Journal of Mechanical Sciences, 1995, 37(8): 815829.

［16］戴攀. 考虑紊流工况和温粘效应的高速精密主轴水润滑动静压轴承设计研究［D］. 西安：西安交通大学机械工程学院，2009.

[1]	牟介刚, 章子成, 谷云庆, 施郑赞, 郑水华. 圆形非光滑表面叶片对离心泵空化特性的影响[J]. 上海交通大学学报, 2020, 54(6): 577-583.
[2]	杨笑，彭旭东，孟祥铠，王玉明. 端面倾斜对粗糙表面机械密封性能的影响[J]. 上海交通大学学报（自然版）, 2017, 51(6): 748-755.
[3]	叶金铭，王威，于安斌，张凯奇. 抗空化扭曲舵的设计及其水动力性能分析[J]. 上海交通大学学报（自然版）, 2017, 51(3): 314-.
[4]	李懿霖,宋保维. 空化器直径对超空泡航行器空泡性能的影响[J]. 上海交通大学学报（自然版）, 2017, 51(12): 1488-1492.
[5]	赵伟国1,2，韩向东1,2，盛建萍3，潘绪伟1,2. 沙粒粒径与含量对喷嘴空化的影响[J]. 上海交通大学学报（自然版）, 2017, 51(11): 1399-1404.
[6]	栗夫园，党建军，张宇文. 锥形空化器的流体动力特性及其影响因素[J]. 上海交通大学学报（自然版）, 2016, 50(02): 246-250.
[7]	鹿麟，潘光. 泵喷推进器非定常空化性能数值模拟分析[J]. 上海交通大学学报（自然版）, 2015, 49(02): 262-268.
[8]	张马骏a，陈鑫a,b. 单个蒸汽气泡溃灭过程的边壁效应数值研究[J]. 上海交通大学学报（自然版）, 2014, 48(12): 1766-1771.
[9]	施瑶，潘光，王鹏，杜晓旭. 泵喷推进器空化特性数值分析[J]. 上海交通大学学报（自然版）, 2014, 48(08): 1059-1064.
[10]	江华生1,2，彭旭东1，孟祥铠1，沈明学1. 旋转轴唇形密封泵吸率的有限元数值分析[J]. 上海交通大学学报（自然版）, 2014, 48(08): 1194-1199.
[11]	邬伟1,2，熊鹰1. 一种抗空化翼型修形设计方法[J]. 上海交通大学学报（自然版）, 2013, 47(06): 878-883.
[12]	杨琼方a, 王永生a, 张志宏b. 螺旋桨初生空化湍流的多相流数值模拟 [J]. 上海交通大学学报（自然版）, 2012, 46(08): 1251-1262.
[13]	苏永生, 王永生, 段向阳. 实船喷水推进泵空化识别试验[J]. 上海交通大学学报（自然版）, 2012, 46(03): 404-409.
[14]	杨琼方a, 王永生a, 张志宏b. 螺旋桨空化初生的判定和空化斗的数值分析[J]. 上海交通大学学报（自然版）, 2012, 46(03): 410-416.
[15]	段向阳, 王永生, 苏永生. 喷水推进泵空化特征联合分类识别[J]. 上海交通大学学报（自然版）, 2011, 45(09): 1322-1326.