基于CFD的磁流体轴承润滑膜特性分析

摘要/Abstract

摘要： 磁流体轴承具有转速高、密封性好、承载力强等优点，符合高速铁路中的应用需求。提出一种磁流体轴承结构，并运用CFD方法对轴承润滑区的承载性能以及热效应问题进行了仿真计算，在此基础上进一步分析了偏心率对轴承承载力及温升的影响规律，为之后磁流体轴承的进一步设计提供帮助。

关键词: 磁流体轴承, CFD, 气穴模型, 润滑特性

Abstract: Ferrofluid bearing had a series of advantages, like high speed, good sealing, strong bearing capacity, etc.,which complied the needs of high-speed railway. A three-dimensional model of ferrofluid bearing was built and the simulation about the bearing and thermodynamic characteristics were carried out based on CFD. And then, further analyses of the influences of eccentricity were made, which laid the foundation for subsequent design of ferrofluid bearing.

Key words: ferrofluid bearing, computational fluid dynamics(CFD), cavitation model, lubrication performance

中图分类号:

李婷, 马吉恩, 章禹, 方攸同. 基于CFD的磁流体轴承润滑膜特性分析[J]. 中国机械工程.

Li Ting, Ma Jien, Zhang Yu, Fang Youtong. Lubrication Characteristics Analyses of Ferrofluid Bearing Based on CFD Simulation[J]. China Mechanical Engineering.

参考文献

[1]何强, 李安玲, 张继祝,等. 高速列车轴承的发展趋势[J]. 徐州工程学院学报(自然科学版), 2012, 27(1):58-64.

He Qiang, Li Anling, Zhang Jizhu, et al. The Development Trend of High-speed Railway Bearing[J]. Journal of Xuzhou Institute of Technology(Natural Sciences Edition), 2012, 27(1):58-64.

[2]顾红, 王先逵, 祝琳华,等. 磁流体技术及发展方向综述[J]. 昆明理工大学学报(理工版), 2002, 27(1):55-57.

Gu Hong, Wang Xiankui, Zhu Linhua, et al.The Review of Magnetic Ferrofluid Technology Development and Its Application[J]. Journal of Kunming University of Science and Technology(Natural Science Edition), 2002, 27(1):55-57.

[3]Tarapov I E. Movement of a Magnetizable Fluid in the Lubricating Layer of a Cylindrical Bearing[J]. Magnetohydrodynamics, 1972(8):444-448.

[4]Tipei N. Theory of lubrication with Ferrofluids: Application to Short Bearings[J]. ASME, 1982,104:510-515.

[5]Das N C.A Study of Optimum Load-bearing Capacity for Slider Bearings Lubricated with Couple Stress Fluids in Magnetic Field[J]. Tribology International, 1998,31(8)：393-400.

[6]Ochonski W.Sliding Bearings Lubricated with Magnetic Fluids[J].Industrial Lubrication and Tribology,2007,59(6):252-265. [7]施洪生, 张奕黄,高培庆. 高速牵引电机轴承关键技术的发展趋势[J]. 机车电传动, 2007(2): 1-5.

Shi Hongsheng, Zhang Yihuang, Gao Peiqing. Development Trend of Critical Technologies for Bearing of High-speed Traction Motor[J]. Electric Drive for Locomotive, 2007(2):1-5.

[8]王建梅, 孙建召, 薛涛,等. 磁流体润滑技术的发展[J]. 机床与液压, 2011, 39(6):109-112.

Wang Jianmei, Sun Jianzhao, Xue Tao, et al. The Development of Magnetic Fluid Lubricating Technology[J]. Machine Tool ＆ Hydraulics, 2011, 39(6):109-112.

[9]王瑞金, 王常斌. 磁流体技术的工业应用[J]. 力学与实践, 2004, 26(6):8-13.

Wang Ruijin, Wang Changbin.The Industrial Apllications of the Magnetic Fluid Technique[J]. Mechanics and Engineering, 2004, 26(6):8-13.

[10]何世权,杨逢瑜,杨瑞. 滑动轴承磁流体薄膜和润滑特性的研究[J]. 润滑与密封, 2007,32(1):126-128.

He Shiquan,Yang Fengyu,Yang Rui. Research on Lubricating Characteristic of Thin Film and Glide Bearings Affected by Magnetic Fluid[J]. Lubrication Engineering, 2007,32(1):126-128.

[11]魏永田, 孟大伟, 温嘉斌. 电机内热交换[M]. 北京：机械工业出版社, 1998.

[12]Guo Zenglin, Hirano T, Kiyk R G. Application of CFD Analysis for Rotating Machinery—Part I: Hydrodynamic, Hydrostatic Bearings and Squeeze Film Damper[J]. J. of Engineering for Gas Turbines and Power APRIL, 2005,127:445-451.

[13]张楚, 杨建刚, 郭瑞,等. 基于两相流理论的滑动轴承流场计算分析[J].中国电机工程学报,2010,30(29):80-84.

Zhang Chu, Yang Jiangang, Guo Rui, et al. Simulation of Journal Bearing Flow Field Using Computational Fluid Dynamics Two Phase Flow Theory[J]. Proceedings of the CSEE, 2010,30(29):80-84.