We present a numerical solution for the operating conditions of a hydrodynamic porous journal bearing. The numerical method allows for the possibility of variable porosity in the bearing matrix, but the solution has been achieved on the assumption of matrix homogeneity. The relation between the various bearing parameters have been shown for a variety of bearing geometries and permeabilities enabling the operating conditions for this type of bearing to be better appreciated. A comparison of the present solution with approximate solutions used by other authors has been made, which indicates the useful working range of the approximate solutions.
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References
1.
L'DarcyH. P. C.‘The water supply of the town of Dijon’, DelmontV. (Ed.) (Libraire des Corps Imperiaux du ports et chaussees des mintes, Paris).
2.
DuboisG. B.OcvirkF. W.‘Analytical derivation and short bearing approximation for full journal bearings’, NACA Rept 11571953.
3.
MorganV. T.CameronA.‘Mechanism of lubrication in porous metal bearings’, Proc. Instn mech. Engrs, Lubrication and Wear Symp.1957, 151–157.
4.
RouleauW. T.‘Hydrodynamic lubrication of narrow press-fitted porous metal bearings’, Trans. Am. Soc. mech. Engrs, J. Bas. Engng196385, 123–128.
5.
CaponeE.‘Lubrication of axially undefined porous bearings’, Wear197015, 157–170.
6.
ShirC. C.JosephD. D.‘Lubrication of a porous bearing—Reynolds’ solution’, Trans. Am. Soc. mech. Engrs, J. appl. Mech.196633, 761–767.
7.
CameronA.MorganV. T.StainsbyA. E.‘Critical conditions for hydrodynamic lubrication of porous metal bearings’, Proc. Instn mech. Engrs1962176 (No. 28), 761–770.
8.
RaimondiA. A.BoydJ.‘A solution for the finite journal bearing and its application to analysis and design’, I, II, III, Trans. Am. Soc. mech. Engrs19581, 159–212.
9.
SassenfeldH.WalterA.‘Pressure distribution and load in a 360° journal bearing’, Rep. Dep. scient. ind. Res., London, Report No. 11 and I.P.H. Report No. 8.
10.
SneckH. J.‘A mathematical analog for determination of porous metal bearing performance characteristics’, Trans. Am. Soc. mech. Engrs, Lubric. sci. Technol.196789, 222–226.
11.
SmalleyA. J.LloydT.HorsnellR.McCallionH.‘A comparison of performance predictions for steadily loaded journal bearings’, Proc. Instn mech. Engrs1965–66180 (Pt 3K), 133–144.
12.
SmithJ. D.Numerical solution of partial differential equations1965 (Oxford University Press, London).
13.
ForsytheG. E.WasowW. R.Finite difference methods for partial differential equations1965, 3rd ed. (John Wiley, New York and Chichester).
14.
LloydTMcCallionH.‘Recent developments in fluid film lubrication theory’, Proc. Instn mech. Engrs1967–68182 (Pt 3A), 36–50.
15.
CameronA.Principles of lubrication, 315 (Longman Group, London, 1966).
16.
CaponeE.De RosaE.‘The finite porous bearings’ (in Italian), Proc. Int. Cong. A.I.M.E.T.A., Udine, 1971.
17.
CusanoC.‘Lubrication of porous journal bearings’, Trans. Am. Soc. mech. Engrs, J. Lubric Technol.197294 (Series F), 69.
18.
RobinsonC. H.SterryF.‘The static strength of pressure fed gas journal bearings’, Porous bearings. A.E.R.E. ED/R, 1672, Harwell, Berkshire.
19.
GreenbergD. B.WegerE.‘An investigation of the viscous and inertia coefficients for the flow of gas through porous sintered metals with high pressure gradients’, Chem. Engng Sci.196012, 8.
20.
MorganV. T.‘Permeability of porous metals’, Symposium sur la Métallurgie des Poudres1964, 419 (La Société Française de Métallurgie, Paris).
