Hydrodynamic performance study of a dimple textured surface at various area ratios and sliding speeds using CFD

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 : 2023-03-13 DOI:10.1177/13506501231161785

Haniff A Rahman, J. A. Ghani, Wan Mohd Faizal Wan Mahmood, M. Rasani, N. Jouini

引用次数: 0

Abstract

A three dimensional computational fluid dynamic (CFD) analysis was conducted to understand the hydrodynamic performance of a dimple texture produced using recently invented low-cost dynamic-assisted tooling (DAT) in the machining process. Five different area ratios, αr of 0%, 1.63%, 3.26%, 6.53%, and 9.80%, and three different sliding speeds represented by Reynolds number, Re of 10, 45, and 80 were analyzed. From the study, there existed an optimum area ratio of 3.26%, which generated up to 290% higher load-carrying capacity compared to a fully textured surface. These findings revealed the benefits of dimple texture produced using DAT, as well as proposing the optimum area ratio needed to be considered in order to optimize the dimple performance for actual application on piston engine surfaces in the near future.

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利用CFD研究不同面积比和滑动速度下凹窝纹理表面的水动力性能

采用三维计算流体动力学(CFD)分析了采用新发明的低成本动态辅助刀具(DAT)加工出的酒窝织构在加工过程中的流体力学性能。分析了αr分别为0%、1.63%、3.26%、6.53%、9.80%的5种不同面积比和雷诺数Re分别为10、45、80的3种不同滑动速度。研究结果表明，最优面积比为3.26%，与完全织构表面相比，其承载能力提高了290%。这些发现揭示了使用DAT产生的凹痕纹理的好处，并提出了在不久的将来在活塞发动机表面上实际应用时需要考虑的最佳面积比，以优化凹痕性能。

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).