Two classes of sub-optimal shapes for one dimensional slider bearings with couple stress lubricants

2020 ◽  
Vol 81 ◽  
pp. 887-909
Author(s):  
Viorel Badescu
Keyword(s):  
Couple Stress ◽  
One Dimensional ◽  
Slider Bearings ◽  
Optimal Shapes

Porous exponential slider bearings lubricated with MHD-couple stress fluid

2018 ◽  
Vol 70 (5) ◽  
pp. 838-845 ◽  
Author(s):  
N.B. Naduvinamani ◽  
Shridevi S. Hosmani
Keyword(s):  
Couple Stress ◽  
Numerical Solutions ◽  
Transverse Magnetic ◽  
Operating Conditions ◽  
Couple Stress Fluid ◽  
Content Type ◽  
Electrically Conducting ◽  
Slider Bearings ◽  
Load Carrying ◽  
First Time

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.

scholarly journals Magnetohydrodynamic effects on finite and infinite slider bearings

2019 ◽  
Vol 286 ◽  
pp. 07002
Author(s):  
M. Mouda ◽  
M. Nabhani ◽  
M. El Khlifi
Keyword(s):  
Magnetic Field ◽  
Finite Difference ◽  
Couple Stress ◽  
Type Equation ◽  
Transverse Magnetic ◽  
Two Dimensional ◽  
Stress Effects ◽  
Slider Bearings ◽  
Seidel Method ◽  
Couple Stress Fluids

This paper presents a numerical investigation of lubricating slider bearings with conducting couple stress fluids using externally applied magnetics fields. The modified two-dimensional magnetohydrodynamic couple stress Reynolds-type equation is obtained. This governing equation is resolved numerically by using finite difference scheme, which involves the Gauss–Seidel method to compute the bearing characteristics. Numerical results using different considered values of the couple stress and Hartman number are presented. These results demonstrate that the transverse magnetic field and couple stress effects are significant.

Inertial MHD Couple Stress Effects on Infinitely Wide Slider Bearings

2015 ◽  
Vol 58 (2) ◽  
pp. 374-383 ◽  
Author(s):  
Mohamed Nabhani ◽  
Mohamed El Khlifi
Keyword(s):  
Couple Stress ◽  
Stress Effects ◽  
Slider Bearings
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