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Thermo-hydrodynamic Lubrication in Hydrodynamic Bearings von Bonneau, Dominique (eBook)

  • Erscheinungsdatum: 08.08.2014
  • Verlag: Wiley-ISTE
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Thermo-hydrodynamic Lubrication in Hydrodynamic Bearings

This Series provides the necessary elements to the development and validation of numerical prediction models for hydrodynamic bearings. This book describes the thermo-hydrodynamic and the thermo-elasto-hydrodynamic lubrication. The algorithms are methodically detailed and each section is thoroughly illustrated.

Produktinformationen

    Format: ePUB
    Kopierschutz: AdobeDRM
    Seitenzahl: 100
    Erscheinungsdatum: 08.08.2014
    Sprache: Englisch
    ISBN: 9781119008033
    Verlag: Wiley-ISTE
    Größe: 13636 kBytes
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Thermo-hydrodynamic Lubrication in Hydrodynamic Bearings

Nomenclature

Points, basis, repairs, links and domains
M point inside the lubricant film M1 point on wall 1 of the lubricant film M2 point on wall 2 of the lubricant film O origin point of lubricant film repair (developed bearing) x, y, z Cartesian basis for the film (developed bearing) xc, yc, zc Cartesian basis for the housing Ω, Ω F film domain Ω0, Ωr film domain, non-active zone Ωp film domain, active zone Ω S domain occupied by a solid ∂Ω0 boundary of a non-active zone parallel to the circumferential direction ∂Ω1 part of an active zone boundary where the pressure is imposed ∂Ω2 part of an active zone boundary where the flow rate is imposed ∂Ω am up-flow boundary for a non-active zone ∂Ω av down-flow boundary for a non-active zone ∂Ω s boundary of a solid
Non-dimensional numbers
Nu c 1 Re m Pr0, 4 Nusselt number Pr μ Cp / k Prandtl number , Re Reynolds number modified Reynolds number Pe Péclet number
Scalars
B m bearing half-width C m bearing radial clearance Cm lubricant / external gas mixture density Cp J kg-1 °C-1 specific heat D Pa; m universal variable representing p else r - h Ec discretized contact equation Ei discretized Reynolds equation relative to node i ERx, ERy discretized load equations EmOx, EMOy discretized moment equations F kg m-2 Couette flow rate factor G kg (Pa.s)-1 Poiseuille mass flow rate factor H W m-2 °C-1 thermal transfer coefficient H 1 m level of wall 1 at point with x , z projected coordinates H 2 m level of wall 2 at point with x , z projected coordinates J , J 2 m Pa-1 s-1 integrals on film thickness L m bearing width /tr

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