Porous exponential slider bearings lubricated with MHD-couple stress fluid

Purpose The purpose of this study is to examine the magneto-hydrodynamic (MHD) effect on porous exponential slider bearings lubricated with couple stress fluid and to derive the modified Reynolds’s equation for non-Newtonian fluid under various operating conditions to obtain the optimum bearing para...

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Bibliographic Details
Published in:Industrial lubrication and tribology 2018-07, Vol.70 (5), p.838-845
Main Authors: Naduvinamani, N.B, Hosmani, Shridevi S
Format: Article
Language:English
Subjects:
Bearing strength
Bearings
Boundary conditions
Computational fluid dynamics
Conducting fluids
Design parameters
Electric fields
Fluids
Friction
Load carrying capacity
Lubricants & lubrication
Magnetic effects
Magnetic fields
Magnetism
Magnetohydrodynamics
Newtonian fluids
Non Newtonian fluids
Permeability
Pore size
Porous materials
Researchers
Stokes law (fluid mechanics)
Stresses
Studies
Viscosity
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Summary:Purpose The purpose of this study is to examine the magneto-hydrodynamic (MHD) effect on porous exponential slider bearings lubricated with couple stress fluid and to derive the modified Reynolds’s equation for non-Newtonian fluid under various operating conditions to obtain the optimum bearing parameters. Design/methodology/approach Based upon the MHD theory and Stokes theory for couple stress fluid, the governing equations relevant to the problem under consideration are derived. This paper analyzes the effect on porous exponential slider bearings with an electrically conducting fluid in the presence of a transverse magnetic field. Semi-numerical solutions are obtained and discussed. Findings It is found that there is an increase in the load carrying capacity, frictional force and decrease in the co-efficient of friction in porous bearings due to the presence of magnetic effects with couple stress fluid. Originality/value This study is relatively original and gives the MHD effect on porous exponential slider bearings lubricated with couple stress fluid. The author believes that the paper presents these results for the first time.
ISSN:0036-8792
1758-5775
DOI:10.1108/ILT-03-2017-0057