Dynamic characteristics of a non-Newtonian lubrication mechanical seal with herringbone grooves considering cavitation effect

IF 1.6 3区工程技术 Q3 ENGINEERING, MECHANICAL

Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology Pub Date : 2023-06-13 DOI:10.1177/13506501231181271

Fuyu Liu, Bo Yu, Yongfan Li, Baojie Ren, Muming Hao, Xinhui Sun, Zengli Wang, Zhentao Li

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引用次数: 0

Abstract

This research investigated the effect of lubricant's non-Newtonian properties on dynamic characteristics of a herringbone grooved liquid film seal (HG-LFS) considering cavitation. A modified steady-state perturbation Reynolds equation of the non-Newtonian was derived. Visualized experiments were conducted to verify the accuracy of calculations. The non-Newtonian effect on stiffness, cavitation, damping coefficients, and other sealing performance of the liquid film seal at different velocity, pressure and film thickness were discussed and analyzed. The results indicate that the seal has larger stiffness and damping coefficients with the dilatant lubricant, the cavitation can be inhibited by the shearing-thinning lubricant, and the impact of non-Newtonian on the seal stability decreases with the increase of film thickness. This study would contribute to the design and theoretical research of liquid film seals.

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考虑空化效应的人字槽非牛顿润滑机械密封动态特性

研究了润滑油的非牛顿特性对考虑空化的人字槽液膜密封动态特性的影响。导出了非牛顿系统的修正稳态微扰雷诺方程。为了验证计算的准确性，进行了可视化实验。讨论和分析了不同速度、压力和膜厚对液膜密封刚度、空化、阻尼系数等密封性能的非牛顿效应。结果表明:膨胀型润滑剂具有较大的刚度和阻尼系数，剪切减薄型润滑剂能抑制空化现象，非牛顿效应对密封稳定性的影响随油膜厚度的增加而减小。该研究对液膜密封的设计和理论研究具有一定的指导意义。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology 工程技术-工程：机械

CiteScore

4.20

自引率

5.00%

发文量

110

审稿时长

6.1 months

期刊介绍： The Journal of Engineering Tribology publishes high-quality, peer-reviewed papers from academia and industry worldwide on the engineering science associated with tribology and its applications. "I am proud to say that I have been part of the tribology research community for almost 20 years. That community has always seemed to me to be highly active, progressive, and closely knit. The conferences are well attended and are characterised by a warmth and friendliness that transcends national boundaries. I see Part J as being an important part of that community, giving us an outlet to publish and promote our scholarly activities. I very much look forward to my term of office as editor of your Journal. I hope you will continue to submit papers, help out with reviewing, and most importantly to read and talk about the work you will find there." Professor Rob Dwyer-Joyce, Sheffield University, UK This journal is a member of the Committee on Publication Ethics (COPE).