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Hydrodynamic Bearings von Bonneau, Dominique (eBook)

  • Erscheinungsdatum: 08.08.2014
  • Verlag: Wiley-ISTE
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Hydrodynamic Bearings

This Series provides the necessary elements to the development and validation of numerical prediction models for hydrodynamic bearings. This book describes the rheological models and the equations of lubrication. It also presents the numerical approaches used to solve the above equations by finite differences, finite volumes and finite elements methods.

Produktinformationen

    Format: ePUB
    Kopierschutz: AdobeDRM
    Seitenzahl: 100
    Erscheinungsdatum: 08.08.2014
    Sprache: Englisch
    ISBN: 9781119008071
    Verlag: Wiley-ISTE
    Größe: 13133 kBytes
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Hydrodynamic Bearings

Nomenclature

Points, basis, repairs, links and domains

M point inside the lubricant film M1 point on the wall 1 of the lubricant film M2 point on the wall 2 of the lubricant film O origin point of lubricant film repair (developed bearing) Oc origin point of the repair attached to the housing (bearing center) Oa origin point of the repair attached to the shaft x, y, z Cartesian basis for the film (developed bearing) xc, yc, zc Cartesian basis for the housing , F film domain 0, r film domain, non-active zone p film domain, active zone S domain occupied by a solid 0 boundary of a non-active zone parallel to the circumferential direction 1 part of an active zone boundary where the pressure is imposed 2 part of an active zone boundary where the flow rate is imposed am up-flow boundary for a non-active zone av down-flow boundary for a non-active zone S boundary of a solid

Non-dimensional numbers

Reynolds number modified Reynolds number

Scalars

B m bearing half-width C m bearing radial clearance Cm   lubricant/external gas mixture density D Pa; m universal variable representing p else r h Ec   discretized contact equation Ei   discretized Reynolds equation relative to node i F kg m-2 Couette flow rate factor G kg (Pa.s)-1 Poiseuille mass flow rate factor H1 m level of wall 1 at point with x, z projected coordinates H2 m level of wall 2 at point with x, z projected coordinates I, I2 m2 Pa-1 s-1 integrals on film thickness J, J2 m Pa-1 s-1 integrals on film thickness L m bearing width L m complete film band width that delimits a non-active zone on the bearing edge Mxc N m xc component for the moment at Oc of pressure torsor Myc N m yc component for the moment at Oc of pressure torsor

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