Numerical simulation study of high-speed lip seal considering eccentricity

IF 1.5 4区工程技术 Q3 ENGINEERING, MECHANICAL

Industrial Lubrication and Tribology Pub Date : 2024-01-25 DOI:10.1108/ilt-11-2023-0350

Guibin Tan, Jinfu Li, Cheng Zhou, Ziwei Luo, Xing Huang, Fei Guo

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引用次数: 0

Abstract

Purpose

This paper aims to focus on the high-speed rotary lip seal in aircraft engines, combining its service parameters, its own structure and application conditions, to study the influence of different eccentric forms, eccentricity, rotational speed and other factors on the performance of the rotary lip seal.

Design/methodology/approach

A numerical simulation model for high-speed eccentric rotary lip seals has been developed based on the theory of elastic hydrodynamic lubrication. This model comprehensively considers the coupling of multiple physical fields, including interface hydrodynamics, macroscopic solid mechanics and surface microscopic contact mechanics, under the operating conditions of rotary lip seals. The model takes into account eccentricity and uses the hazardous cross-sectional method to quantitatively predict sealing performance parameters, such as leakage rate and friction force.

Findings

Eccentricity has a large impact on lip seal performance; lips are more susceptible to wear failure under static eccentricity and to leakage failure under dynamic eccentricity.

Originality/value

This study provides a new idea for the design of rotary lip seal considering eccentricity, which is of guiding significance for the engineering application of rotary lip seal.

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考虑偏心的高速唇形密封件数值模拟研究

目的本文以航空发动机中的高速旋转唇形密封为研究对象，结合其服役参数、自身结构和应用条件，研究不同偏心形式、偏心率、转速等因素对旋转唇形密封性能的影响。设计/方法/途径基于弹性流体动力润滑理论，建立了高速偏心旋转唇形密封的数值模拟模型。该模型全面考虑了旋转唇形密封工作条件下多个物理场的耦合，包括界面流体力学、宏观固体力学和表面微观接触力学。研究结果偏心率对唇式密封性能影响较大；在静态偏心率下，唇式密封更容易发生磨损失效，而在动态偏心率下，唇式密封更容易发生泄漏失效。

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

Industrial Lubrication and Tribology 工程技术-工程：机械

CiteScore

3.00

自引率

18.80%

发文量

129

审稿时长

1.9 months

期刊介绍： Industrial Lubrication and Tribology provides a broad coverage of the materials and techniques employed in tribology. It contains a firm technical news element which brings together and promotes best practice in the three disciplines of tribology, which comprise lubrication, wear and friction. ILT also follows the progress of research into advanced lubricants, bearings, seals, gears and related machinery parts, as well as materials selection. A double-blind peer review process involving the editor and other subject experts ensures the content''s validity and relevance.