受电场和磁场影响的润滑:最新研究进展和广义 MEMT 场雷诺方程

IF 2 Q2 ENGINEERING, MECHANICAL Frontiers in Mechanical Engineering Pub Date : 2024-01-12 DOI:10.3389/fmech.2023.1334814
Xiaoman Wang, Q. J. Wang, Ning Ren, Roger England
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引用次数: 0

摘要

电场和磁场以各种方式用于提高润滑系统的性能。这些磁场的存在会极大地改变润滑油的特性。由于电流的存在,电动汽车(EV)的快速普及带来了与润滑相关的新挑战。我们迫切需要对受到此类电场影响的润滑系统进行深入研究。本文重点介绍了涉及电场或磁场的几个关键润滑领域的最新研究成果,它们分别是:1)润滑中的电双层;2)电流变流体;3)磁流变流体;4)铁流体;5)当前电动汽车中使用的典型流体以及电动汽车轴承部件的典型表面故障。综述了各领域常用的润滑剂,总结了润滑机理和相关数学模型,讨论了数值分析和实验探索的方法和结果,并探讨了不同领域润滑剂的共同特点。在这些领域当前研究进展和经典广义雷诺方程的基础上,提出了一种广义机械-电-磁-热场(MEMT-场)雷诺方程,以描述上述润滑情况以及机械、电、磁和热耦合场的影响,该方程可以用数值迭代法求解。
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Lubrication subjected to effects of electric and magnetic fields: recent research progress and a generalized MEMT-field Reynolds equation
Electric and magnetic fields have been used in various ways to enhance the performance of lubrication systems. The presence of these fields can significantly change the properties of lubricants. The rapid adoption of electric vehicles (EVs) has presented new lubrication-related challenges due to the presence of electric current. There is an urgent need for an in-depth study of lubrication systems subjected to such fields. This paper highlights recent research works on several key areas of lubrication involving electric or magnetic fields, which are:1) electric double layer in lubrication, 2) electrorheological fluids, 3) magnetorheological fluids, 4) ferrofluids, and 5) typical fluids used in the current EVs and typical surface failures of bearing components in EVs. Commonly used lubricants in each area are reviewed; lubrication mechanisms and related mathematical models are summarized; methods for and results from numerical analyses and experimental explorations are discussed; and common features of lubrications in different fields are explored. Based on the current research progress in these fields and the classic generalized Reynolds equation, a generalized mechanical-electro-magnetic-thermal-field (MEMT-field) Reynolds equation is proposed to describe the aforementioned lubrication scenarios and the effects of coupled mechanical, electric, magnetic, and thermal fields, which can be solved with a numerical iteration method.
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来源期刊
Frontiers in Mechanical Engineering
Frontiers in Mechanical Engineering Engineering-Industrial and Manufacturing Engineering
CiteScore
4.40
自引率
0.00%
发文量
115
审稿时长
14 weeks
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