Effect of velocity slip in axially undefined porous bearings

Published on Jul 1, 1976in Wear 2.96
· DOI :10.1016/0043-1648(76)90074-0
Jai Prakash50
Estimated H-index: 50
(Indian Institutes of Technology),
S.K. Vij4
Estimated H-index: 4
(Indian Institutes of Technology)
Abstract
Abstract A theoretical analysis of the performance characteristics of axially undefined journal bearings was carried out. The analysis takes into account the velocity slip at the surface of the porous medium by using the Beavers-Joseph criterion. Results are presented for various bearing characteristics and compared with earlier results obtained by using the no-slip condition.
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  • Citations (8)
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References9
Published on Jan 1, 1962in Journal of Applied Mechanics
Oscar Pinkus1
Estimated H-index: 1
,
Beno Sternlicht1
Estimated H-index: 1
,
Edward Saibel1
Estimated H-index: 1
684 Citations Source Cite
Published on Jun 15, 1966in Journal of Geophysical Research 2.71
F. W. Crawford1
Estimated H-index: 1
(Kansas State University),
Gary M. Hoover3
Estimated H-index: 3
(Kansas State University)
This paper is a preliminary report on the flow of heterogeneous fluids in porous permeable mediums as a sum of energy terms, which can be evaluated either by experiment or straightforward calculation. From experiments with air-water interfaces moving through simple synthesized permeable specimens we concluded that a driving agency must supply a characteristic minimum energy per unit volume of fluid injected. This minimum energy is quantitatively equal to the sum of a series of individually measu...
68 Citations Source Cite
Published on Jan 1, 1970in Journal of Basic Engineering
G. S. Beavers22
Estimated H-index: 22
,
Ephraim M Sparrow67
Estimated H-index: 67
,
R. A. Magnuson1
Estimated H-index: 1
169 Citations Source Cite
Published on Jan 1, 1966in Journal of Applied Mechanics
C. C. Shir2
Estimated H-index: 2
(University of Minnesota),
Daniel D. Joseph61
Estimated H-index: 61
(University of Minnesota)
In this report, we discuss the unique features which are introduced into the theory of hydrodynamic lubrication of bearings when the bearings are permeable and tolerate a flow of oil. The subject of the analysis is not entirely new, and a few aspects of the problem have been treated by several authors [1, 2, 4, 5, 9].
33 Citations Source Cite
Published on Dec 1, 1971in Wear 2.96
P.R.K. Murti3
Estimated H-index: 3
(Indian Institutes of Technology)
Abstract Analytical solution is attempted for a long porous bearing, press-fitted into the housing and working with a full film of lubricant. The pressure distribution is determined by a simultaneous solution of Reynolds equation for the film and the Laplace equation for the bearing material while maintaining the continuity of pressure at the film-bearing interface. The pressure in the bearing material and film are taken in series form so that all the boundary conditions are satisfied. Using a s...
27 Citations Source Cite
Published on Oct 1, 1967in Journal of Fluid Mechanics 2.89
G. S. Beavers22
Estimated H-index: 22
(University of Minnesota),
Daniel D. Joseph61
Estimated H-index: 61
(University of Minnesota)
Experiments giving the mass efflux of a Poiseuille flow over a naturally permeable block are reported. The efflux is greatly enhanced over the value it would have if the block were impermeable, indicating the presence of a boundary layer in the block. The velocity presumably changes across this layer from its (statistically average) Darcy value to some slip value immediately outside the permeable block. A simple theory based on replacing the effect of the boundary layer with a slip velocity prop...
1,818 Citations Source Cite
Published on Jan 1, 1974in Journal of Applied Mechanics
J. Prakash1
Estimated H-index: 1
,
S. K. Vij1
Estimated H-index: 1
Analytical solution for performance characteristics of a narrow journal bearing is obtained. The analysis takes account of the velocity slip at the surface of a porous medium by using Beavers-Joseph criterion [1]. Results are presented for various bearing characteristics and compared with earlier results obtained by using no-slip condition. A comparison is also made with an earlier approximate analysis [8] which considers the slip effects but assumes the bearing wall thickness to be infinitesima...
53 Citations Source Cite
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  • Citations (8)
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Cited By8
M.-H. Meurisse4
Estimated H-index: 4
(Institut national des sciences Appliquées de Lyon)
4 Citations Source Cite
Published on Aug 1, 2014in Key Engineering Materials
Te Yen Huang1
Estimated H-index: 1
(Lunghwa University of Science and Technology),
Shao Yu Hsu1
Estimated H-index: 1
(Industrial Technology Research Institute)
+ 1 AuthorsSheam-Chyun Lin7
Estimated H-index: 7
(National Taiwan University of Science and Technology)
This report presents a study on the performance of the fully porous and the partially porous aerostatic journal bearings. Based on the finite volume method and the pressure-velocity coupling scheme of the SIMPLE algorithm with the standard k-e turbulent model, this study utilized the CFD software to solve the incompressible three dimensional Navier-Stokes equations to calculate the pressure of the flow field in the bearings. The effects of the size of the porous medium, the bearing gap, the ecce...
6 Citations Source Cite
Published on Jan 1, 1999in Tribology Transactions 1.72
J. Prakash1
Estimated H-index: 1
(Indian Institute of Technology Bombay),
K. Gururajan1
Estimated H-index: 1
(Malnad College of Engineering)
The paper considers the effect of velocity slip in rough porous journal bearings operating in the hydrodynamic regime. On the basis of stochastic theory of hydrodynamic lubrication of rough surfaces developed by Christensen and incorporating Beavers and Joseph slip condition at the porous bearing interface, different forms of Reynolds—type equations, as applicable to porous bearings are derived for various types of surface roughness pattern. As an application of the theory, the case of an infini...
11 Citations Source Cite
Published on Sep 1, 1980in Wear 2.96
Vinay Kumar4
Estimated H-index: 4
Abstract The progress to date on various types and aspects of porous metal bearings is critically reviewed. Important potential research areas for further work are discussed.
13 Citations Source Cite
Published on Jun 1, 2015in Key Engineering Materials
Te Yen Huang1
Estimated H-index: 1
(Lunghwa University of Science and Technology),
Shao Yu Hsu1
Estimated H-index: 1
(Industrial Technology Research Institute)
+ 2 AuthorsTa Hsin Chou1
Estimated H-index: 1
(National Taiwan University of Science and Technology)
The effects of the rotating speed of the spindle, the number of the porous medium inserted into the partially porous aerostatic journal bearing and the thickness of the bearing gap on the characteristics of the bearing such as the pressure distribution, the load carrying capacity and the stiffness of the bearing were studied. Based on the finite volume method and the pressure-velocity coupling scheme of the SIMPLE algorithm with the standard k-e turbulent model, the CFD software was used to solv...
1 Citations Source Cite
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