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

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...

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Main Authors:	M. Daliri, D. Jalali-Vahid, Homer Rahnejat
Format:	Default Article
Published:	2014
Subjects:	Mechanical engineering not elsewhere classified Magneto-hydrodynamics Squeeze film action Couple stress fluid Convective inertia Hartman number Mechanical Engineering not elsewhere classified Mechanical Engineering
Online Access:	https://hdl.handle.net/2134/26330
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id	rr-article-9569546
record_format	Figshare
spelling	rr-article-95695462014-01-01T00:00:00Z Squeeze film lubrication of coupled stress electrically conducting inertial fluids in wide parallel rectangular conjunctions subjected to a magnetic field M. Daliri (7211258) D. Jalali-Vahid (7211147) Homer Rahnejat (1247550) Mechanical engineering not elsewhere classified Magneto-hydrodynamics Squeeze film action Couple stress fluid Convective inertia Hartman number Mechanical Engineering not elsewhere classified Mechanical Engineering 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. 2014-01-01T00:00:00Z Text Journal contribution 2134/26330 https://figshare.com/articles/journal_contribution/Squeeze_film_lubrication_of_coupled_stress_electrically_conducting_inertial_fluids_in_wide_parallel_rectangular_conjunctions_subjected_to_a_magnetic_field/9569546 CC BY-NC-ND 4.0
institution	Loughborough University
collection	Figshare
topic	Mechanical engineering not elsewhere classified Magneto-hydrodynamics Squeeze film action Couple stress fluid Convective inertia Hartman number Mechanical Engineering not elsewhere classified Mechanical Engineering
spellingShingle	Mechanical engineering not elsewhere classified Magneto-hydrodynamics Squeeze film action Couple stress fluid Convective inertia Hartman number Mechanical Engineering not elsewhere classified Mechanical Engineering M. Daliri D. Jalali-Vahid Homer Rahnejat Squeeze film lubrication of coupled stress electrically conducting inertial fluids in wide parallel rectangular conjunctions subjected to a magnetic field
description	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.
format	Default Article
author	M. Daliri D. Jalali-Vahid Homer Rahnejat
author_facet	M. Daliri D. Jalali-Vahid Homer Rahnejat
author_sort	M. Daliri (7211258)
title	Squeeze film lubrication of coupled stress electrically conducting inertial fluids in wide parallel rectangular conjunctions subjected to a magnetic field
title_short	Squeeze film lubrication of coupled stress electrically conducting inertial fluids in wide parallel rectangular conjunctions subjected to a magnetic field
title_full	Squeeze film lubrication of coupled stress electrically conducting inertial fluids in wide parallel rectangular conjunctions subjected to a magnetic field
title_fullStr	Squeeze film lubrication of coupled stress electrically conducting inertial fluids in wide parallel rectangular conjunctions subjected to a magnetic field
title_full_unstemmed	Squeeze film lubrication of coupled stress electrically conducting inertial fluids in wide parallel rectangular conjunctions subjected to a magnetic field
title_sort	squeeze film lubrication of coupled stress electrically conducting inertial fluids in wide parallel rectangular conjunctions subjected to a magnetic field
publishDate	2014
url	https://hdl.handle.net/2134/26330
_version_	1797373380343627776

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

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