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Title: A hydrodynamic flow analysis for optimal positioning of surface textures
Authors: Morris, Nicholas J.
Rahmani, Ramin
Rahnejat, Homer
Keywords: Sliding lubricated contacts
Surface texturing
Micro-hydrodynamics
Pressure perturbations
Issue Date: 2017
Publisher: © The Authors. Published by Sage.
Citation: MORRIS, N.J., RAHMANI, R. and RAHNEJAT, H., 2017. A hydrodynamic flow analysis for optimal positioning of surface textures. Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology, 231 (9), pp. 1140-1150.
Abstract: The current study uses Reynolds equation and the cross-film flow velocity profile to analytically determine pertinent locations for texture feature positioning in sliding hydrodynamic contacts. The position of textures is shown to have a significant effect on the lubricant film thickness, thus the load carrying capacity and generated friction and power loss. It is shown that textures, residing after the inlet lubricant recirculation boundary and prior to the position of maximum contact pressure enhance film thickness and reduce friction in the contact of real rough sliding surfaces. The methodology is applied to partial surface texturing of a thin compression ring of a high performance race engine, with the predicted results confirming the utility of the expounded analytical technique and its conformance to the findings of others reported in literature. The time-efficient analytical and fundamental approach constitutes the main contribution of the paper to furtherance of knowledge
Description: This paper was accepted for publication in the journal Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology and the definitive published version is available at https://doi.org/10.1177/1350650117709672
Sponsor: This research was part-funded by the Engineering and Physical Sciences (EPSRC) through the Encyclopaedic Program grant.
Version: Accepted for publication
DOI: 10.1177/1350650117709672
URI: https://dspace.lboro.ac.uk/2134/24994
Publisher Link: https://doi.org/10.1177/1350650117709672
ISSN: 1350-6501
2041-305X
Appears in Collections:Published Articles (Mechanical, Electrical and Manufacturing Engineering)

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