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Effect of Surface Roughness on MHD Couple Stress Squeeze-Film Characteristics between a Sphere and a Porous Plane Surface
Joint Authors
Kashinath, Biradar
Rajashekar, M.
Source
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-12-17
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
The combined effects of couple stress and surface roughness on the MHD squeeze-film lubrication between a sphere and a porous plane surface are analyzed, based upon the thin-film magnetohydrodynamic (MHD) theory.
Using Stoke’s theory to account for the couple stresses due to the microstructure additives and the Christensen’s stochastic method developed for hydrodynamic lubrication of rough surfaces derives the stochastic MHD Reynolds-type equation.
The expressions for the mean MHD squeeze-film pressure, mean load-carrying capacity, and mean squeeze-film time are obtained.
The results indicate that the couple stress fluid in the film region enhances the mean MHD squeeze-film pressure, load-carrying capacity, and squeeze-film time.
The effect of roughness parameter is to increase (decrease) the load-carrying capacity and lengthen the response time for azimuthal (radial) roughness patterns as compared to the smooth case.
Also, the effect of porous parameter is to decrease the load-carrying capacity and increase the squeeze-film time as compared to the solid case.
American Psychological Association (APA)
Rajashekar, M.& Kashinath, Biradar. 2012. Effect of Surface Roughness on MHD Couple Stress Squeeze-Film Characteristics between a Sphere and a Porous Plane Surface. Advances in Tribology،Vol. 2012, no. 2012, pp.1-10.
https://search.emarefa.net/detail/BIM-509509
Modern Language Association (MLA)
Rajashekar, M.& Kashinath, Biradar. Effect of Surface Roughness on MHD Couple Stress Squeeze-Film Characteristics between a Sphere and a Porous Plane Surface. Advances in Tribology No. 2012 (2012), pp.1-10.
https://search.emarefa.net/detail/BIM-509509
American Medical Association (AMA)
Rajashekar, M.& Kashinath, Biradar. Effect of Surface Roughness on MHD Couple Stress Squeeze-Film Characteristics between a Sphere and a Porous Plane Surface. Advances in Tribology. 2012. Vol. 2012, no. 2012, pp.1-10.
https://search.emarefa.net/detail/BIM-509509
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-509509