复杂空间由运动体诱导的润滑脂/基础油/空气多相流动规律研究

项目名称： 复杂空间由运动体诱导的润滑脂/基础油/空气多相流动规律研究

项目编号： No.51306086

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 能源与动力工程

项目作者： 张强

作者单位： 兰州交通大学

项目金额： 24万元

中文摘要： 润滑脂润滑的场合非常广泛，约80％的滚动轴承使用润滑脂润滑。润滑脂、基础油及其空气在其工作空间的流动决定着滚动接触区润滑剂的动态补给。该补给过程就是润滑脂润滑的机理，直到现在还没有达成共识。润滑脂、基础油及其空气在其工作空间的流动属于运动体诱导的多相流流动。加之润滑脂的非线性流变学特性，该流动非常复杂。在鲜见系统研究报道的现状下，项目采用理论分析、数值分析和实验相结的方法拟开展四个方面的研究：（1）做诱导流动润滑脂的流动规律及其描述；（2）基础油、稠化剂脱离润滑脂现象；（3）诱导流动润滑脂内的基础油和稠化剂的传质现象及其描述；（4）运动体诱导空气流动对基础油、稠化剂、润滑脂流动的作用机理。渴望获得：复杂空间由运动体诱导的润滑脂/基础油/空气多相流动规律；能揭示润滑脂润滑机理的关键基础依据；能用于研究润滑脂、优化设计润滑脂工作空间的基础数据。从而，项目结果具有较大的学术意义和较高的实用价值。

中文关键词： 多相流；润滑脂；基础油；滚动轴承；

英文摘要： Grease lubrication has a very wide range of applications. Comparing with oil lubrication, grease lubrication has faults that are not suitable for high speed and poor lubricity, but it has the advantage to make bearings having simple periphery structure, smaller size, lighter lightweight and easy operation. Grease is composed of three parts, base oil, thickener and additives. Grease lubrication is partly due to the role of the thickener, other due to the lubrication characteristics of the special combination of base oil and thickener. They are different from the lubrication characteristics of base oil or the thickener along. Special lubrication mechanism is decided by special structure of grease. Understanding of the mechanism of lubrication is very helpful to improve the quality of grease, to reduce consuming of grease, to select lubrication reasonably, to decrease filling amount of grease and to design the most appropriate structure for rolling bearings. The flow of grease, oil and air in the working space determines the dynamic replenishment of the lubricant in rolling contacting, which is the lubrication mechanism of grease, until now it has not been reached a consensus, and that how the lubricants move to the contact area is still in a state of qualitative description. The typical characteristics of grease f

英文关键词： Multiphase flow；Grease；Base oil；Rolling bearing；