Shahmohamadi, H. 2015 (Trib Int,v90,pp164-174).pdf (1.25 MB)

On the boundary conditions in multi-phase flow through the piston ring-cylinder liner conjunction

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journal contribution
posted on 19.05.2015, 09:59 by Hamed Shahmohamadi, Mahdi Mohammadpour, Ramin Rahmani, Homer Rahnejat, Colin Garner, S.J. Howell-Smith
Prediction of load capacity and friction depends on the assumed boundary conditions. The inlet comprises swirl and counter flows, admitting only a portion of the inward flow into the conjunctional gap. At the contact exit, the lubricant film ruptures with multi-phase flow through a cavitation region. Therefore, the boundary conditions affect the load carrying capacity and friction. A Navier–Stokes solution of multi-phase flow, including vapour transport is presented, with determined realistic boundary conditions. The evaluated boundaries agree with potential flow analysis satisfying compatibility conditions, not hitherto reported in literature. The investigation is extended to the determination of optimum compression ring contacting geometry.

Funding

The authors wish to express their gratitude to the Lloyd׳s Register Foundation (LRF) for the financial support extended to the International Institute for Cavitation Research. Thanks are also due to the Engineering and Physical Sciences Research Council (EPSRC) for the Encyclopaedic Programme Grant (EP/G012334/1); some of research findings of which are used in this paper. The technical and financial support of Capricorn Automotive is also acknowledged.

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Published in

Tribology International

Volume

90

Pages

164 - 174

Citation

SHAHMOHAMADI, H. ... et al, 2015. On the boundary conditions in multi-phase flow through the piston ring-cylinder liner conjunction. Tribology International, 90, pp.164-174.

Publisher

Elsevier (© The authors)

Version

VoR (Version of Record)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NoDerivatives 4.0 International (CC BY-ND 4.0) licence. Full details of this licence are available at: http://creativecommons.org/licenses/by-nd/4.0/

Acceptance date

16/04/2015

Publication date

2015-04-24

Notes

This paper was published by Elsevier as an Open Access article under the CC BY NC ND 4.0 International licence: http://creativecommons.org/licenses/by-nc-nd/4.0/

ISSN

1879-2464;0301-679X

Language

en

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