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Study of inertia effect on thermohydrodynamic characteristicsof Rayleigh step bearings by CFD method

Published online by Cambridge University Press:  22 August 2013

M. Vakilian ,
Seyyed Abdolreza Gandjalikhan Nassab  and
Z. Kheirandish
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Abstract

This paper presents a numerical study about lubricant inertia effect onthermohydrodynamic (THD) characteristics of Rayleigh step bearings running under steady,incompressible and laminar condition. To reach this goal, the set of governing equationsis solved numerically with and without considering the inertia terms. The discretizedforms of the momentum and energy equations are obtained by the finite volume method andsolved using the Computational Fluid Dynamic (CFD) technique. These equations are solvedsimultaneously because the dependency of lubricant viscosity with temperature. Thehydrodynamic and thermal behaviors of the slider step bearings are demonstrated bypresenting several figures including the lubricant pressure and temperature distributionswith and without considering the fluid inertia effect. Numerical results show that inertiaterm has considerable effect on THD characteristics of step bearings, especially when theyrun with high velocity of runner surface.

Keywords

Rayleigh step bearingInertiaCFDTHD
Type
Research Article
Information
Mechanics & Industry , Volume 14 , Issue 4 , 2013 , pp. 275 - 285
Copyright
© AFM, EDP Sciences 2013

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References

Dowson, D., A generalized Reynolds equation for fluid film lubrication, Int. J. Mech. Sci. 4 (1962) 159–170 CrossRefGoogle Scholar
Ezzat, H.A., Rohde, S.M., A study of thermohydrodynamic performance of finite slider bearings, ASME J. Lubric. Technol. 95 (1973) 298–307 CrossRefGoogle Scholar
Boncompain, R., Fillon, M., Frene, J., Analysis of thermal effects in hydrodynamic bearings, ASME J. Tribol. 108 (1986) 219–224 CrossRefGoogle Scholar
Auloge, J.Y., Bourgin, P., Gay, B., The optimum design of one-dimensional bearings with non Newtonian lubricants, Trans. ASME J. Lubric. Technol. 105 (1983) 391–39 CrossRefGoogle Scholar
Fillon, M., Khonsari, M.M., Thermohydrodynamic design charts for tilting-pad journal bearings, ASME J. Tribol. 118 (1996) 232–238 CrossRefGoogle Scholar
Arghir, M., Alsayed, A., Nicolas, D., The finite volume solution of the Reynolds equation of lubrication with film discontinuities, Int. J. Mech. Sci. 44 (2002) 2119–2132 CrossRefGoogle Scholar
R.K. Sharma, R.K. Pandey, Experimental studies of pressure distribution in finite slider bearing with single continuous surface profiles on the pad, Tribol. Int. (2009) 42 1040–1045
Tello, J.I., Regularity of solutions to a lubrication problem with discontinuous separation data, Nonlinear Anal. 53 (2003) 1167–77 CrossRefGoogle Scholar
Hideki, O., Thermohydrodynamic lubrication analysis method of step bearings, IHI Eng. Rev. 38 (2005) 6–10 Google Scholar
Dobrica, M., Fillon, M., Reynolds’ model suitability in simulating Rayleigh step bearing thermohydrodynamic problems, Tribol. Trans. 48 (2005) 522–530 CrossRefGoogle Scholar
Farmer, D.G., Shepherd, J.J., Slip flow in the gas-lubricated Rayleigh step-slider bearing, Int. J. App. Mech. Eng. 11 (2006) 593–608 Google Scholar
Naduvinamani, N.B., Siddangouda, A., Effect of surface roughness on the hydrodynamic lubrication of porous step-slider bearings with couple stress fluids, Tribol. Int. 40 (2007) 780–793 CrossRefGoogle Scholar
Rahmani, R., Shirvani, A., Shirvani, H., Analytical analysis and optimisation of the Rayleigh step slider bearing, Tribol. Int. 42 (2009) 666–674 CrossRefGoogle Scholar
Lee, D., Kim, D., Three-dimensional thermohydrodynamic analyses of Rayleigh step air foil thrust bearing with radially arranged bump foils, Tribology. Trans. 54 (2011) 432–448 CrossRefGoogle Scholar
S.A. Gandjalikhan Nassab, Inertia effect on thermohydrodynamic characteristics of journal bearings, Proc. ImechE 219 (2005), Part J, J. Tribol. 459–467
M. Khonsari, E.R. Booser, Applied Tribology 2e: Bearing design and lubrication, John Willy & Sons. Ltd., 2008, pp. 29–41
Jianming, W., Gaobing, J., The optimum design of the Rayleigh slider bearing with a power law fluid, Wear 129 (1989) 1–11 CrossRefGoogle Scholar
Patankar, S.V., Spalding, D.B., A calculation procedure for heat, mass and momentum transfer in three-dimensional parabolic flows, Int. J. Heat Mass Transf. 15 (1972) 1787–1806 CrossRefGoogle Scholar