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Squeeze film lubrication of coupled stress electrically conducting inertial fluids in wide parallel rectangular conjunctions subjected to a magnetic field

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posted on 01.09.2017 by M. Daliri, D. Jalali-Vahid, Homer Rahnejat
The paper presents analytical solution of squeeze film characteristics in wide parallel rectangular conjunctions with incompressible electrically conducting couple stress fluids subjected to a magnetic field. Analytical expressions are obtained by combined solution of modified Reynolds equation and Stokes micro-continuum for couple stress fluids with averaged inertia. Various cases of magneto-hydrodynamic, conducting and non-conducting fluid characteristics with and without convective inertial contributions are investigated. It is shown that, in general, couple stress fluids enhance the load carrying capacity of the contact and inhibit the incidence of thin films which can result in direct contact of surfaces. Convective inertia also significantly improves the load carrying capacity. However, with impulsive loading the response time of couple stress fluids deteriorates relative to Newtonian lubricants on account of their increased viscosity. An important conclusion of the study is that magneto-hydrodynamic couple stress fluids are best suited to applications with high relatively steady load applications. © IMechE 2013 Reprints and permissions: sagepub.co.uk/journalsPermissions. nav.

Funding

The authors would like to acknowledge the financial supports from Sahand University of Technology under grant of Research Fund for the Doctoral Program for Higher Education.

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Published in

Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology

Volume

228

Issue

3

Pages

288 - 302

Citation

DALIRI, M., JALALI-VAHID, D. and RAHNEJAT, H., 2014. Squeeze film lubrication of coupled stress electrically conducting inertial fluids in wide parallel rectangular conjunctions subjected to a magnetic field. Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology, 228(3), pp. 288-302.

Publisher

© IMechE. Published by Sage.

Version

AM (Accepted Manuscript)

Publisher statement

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

Publication date

2014

Notes

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/10.1177/1350650113504565. Reprinted by permission of SAGE Publications

ISSN

1350-6501

eISSN

2041-305X

Language

en

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