A new thermal management method for reducing thermoelastic growth of an air foil bearing

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 : 2024-06-06 DOI:10.1177/13506501241258284

P. Samanta, N. C. Murmu, M. Khonsari

引用次数: 0

Abstract

Foil bearings are considered to be an excellent fit for a range of high-temperature applications. However, they are susceptible to collapse as a result of thermoelastic instability (TEI). This study introduces a novel approach to enhance passive cooling by adding fins to the surface of the hollow journal cylinder. The effect of enhanced heat transport on the thermoelastic evolution of the bearing surface is thoroughly explored. Furthermore, the critical speed of a foil bearing is derived after taking into account the effect of fins. This affordable method enables the designer to increase the threshold speed of TEI and guard against foil-bearing failure.

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减少气箔轴承热弹性增长的新型热管理方法

箔轴承被认为是一系列高温应用的理想选择。然而，由于热弹性不稳定性（TEI），它们很容易坍塌。本研究引入了一种新方法，通过在空心轴颈圆柱体表面添加翅片来增强被动冷却。研究深入探讨了增强热传输对轴承表面热弹性演变的影响。此外，在考虑了翅片的影响后，还得出了箔轴承的临界转速。这种经济实惠的方法使设计人员能够提高 TEI 的临界转速，防止箔式轴承失效。

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

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).

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