Fluid Film Lubrication

Abstract

Fluid film bearings are among the best devices for overcoming friction and eliminating wear. They are machine elements and, together with shafts, gears, and cams, constitute the building blocks engineers use in the design and construction of mechanical devices. This book offers a systematic treatment of the fundamentals of fluid film lubrication and fluid film bearings. The introduction places fluid film bearings within the broader context of tribology, a subject that encompasses friction, lubrication, and wear. The early chapters provide a thorough discussion of classical tribological theory. The remainder of the book is devoted to more advanced topics of inertia, thermal and turbulence effects, lubrication of counterformal contacts, and non-Newtonian lubricants. Also included are developing areas, such as lubrication with emulsions. Graduate and senior undergraduate students, researchers, and practising engineers will appreciate this clear, thorough discussion of fluid film lubrication and fluid film bearings.

Numerical methods for hydraulic fracture propagation: A review of recent trends

“…The equations of thin-film lubrication are obtained from the width averaging (in the direction normal to the fracture wall) of the fluid mass and momentum conservation (see e.g. Szeri (2010)). The width averaged mass conservation for a fluid of density ρ is given by:…”

Nanomanufacturing : nano-structured materials made layer-by-layer.

“…Reynolds' lubrication theory is a simplification of the Navier-Stokes equations under a number of assumptions [Hori (2006), Szeri (2010)]. For our model, the four key assumptions used to simplify the Navier-Stokes equations are:…”

“…These models have been easily be incorporated into our formulation, but have been omitted here for simplicity of the presentation. Detailed derivation and discussion of these governing equations can be found elsewhere [Hori (2006), Szeri (2010)], so we begin our discussion with the simplified mass and momentum conservation equations.…”

“…The theory of lubrication flow has been in use for well over a century, beginning with Tower's 1883 experiments of a rolling bearing [Tower (1883) Booker and Huebner (1972), Christensen (1972), Higgins and Scriven (1980), Anturkar et al (1990), Heil and Pedley (1995), Bhagavat et al (2000), Kothmann and Stefani (2001), Hori (2006), Szeri (2010)]. Many extensions of this basic theory exist, including elastohydrodynamic lubrication [Greenwood (1972), Taylor and O'Callaghan (1972), Oh and Huebner (1973), LaBouff and Booker (1985), Jones (1993) [Constantinescu (1959), Ng (1964), Elrod and Ng (1967), Hirs (1973)], and lubrication of non-Newtonian fluids [Ng and Saibel (1962), Swamy et al (1977), Johnson1993, Bhattacharjee and Das (1996), Hryniewicz et al (2001), Nair et al (2007), Mongkolwongrojn and Aiumpronsin (2010)], among others [Christensen (1971), Eringen and Okada (1995), Feng and Weinbaum (2000), Stone (2005), Jang and Khonsari (2005), Bujurke and Kudenatti (2007), Rojas et al (2010)].…”

“…Many extensions of this basic theory exist, including elastohydrodynamic lubrication [Greenwood (1972), Taylor and O'Callaghan (1972), Oh and Huebner (1973), LaBouff and Booker (1985), Jones (1993) [Constantinescu (1959), Ng (1964), Elrod and Ng (1967), Hirs (1973)], and lubrication of non-Newtonian fluids [Ng and Saibel (1962), Swamy et al (1977), Johnson1993, Bhattacharjee and Das (1996), Hryniewicz et al (2001), Nair et al (2007), Mongkolwongrojn and Aiumpronsin (2010)], among others [Christensen (1971), Eringen and Okada (1995), Feng and Weinbaum (2000), Stone (2005), Jang and Khonsari (2005), Bujurke and Kudenatti (2007), Rojas et al (2010)]. Recent books by Hori [Hori (2006)] and Szeri [Szeri (2010)] thoroughly review the history and applications of lubrication theory and derive the governing equations.…”