Some aspects of lubrication in heavy regimes: thermal effects, stability and turbulence

Durany, J. and Pereira-Pérez, J. and Varas Merida, Fernando (2014). Some aspects of lubrication in heavy regimes: thermal effects, stability and turbulence. "Mathematics and Computers in Simulation", v. 102 ; pp. 90-103. ISSN 2070-0482. https://doi.org/10.1016/j.matcom.2013.09.005.

Description

Title: Some aspects of lubrication in heavy regimes: thermal effects, stability and turbulence
Author/s:
  • Durany, J.
  • Pereira-Pérez, J.
  • Varas Merida, Fernando
Item Type: Article
Título de Revista/Publicación: Mathematics and Computers in Simulation
Date: 2014
ISSN: 2070-0482
Volume: 102
Subjects:
Faculty: E.T.S.I. Aeronáuticos (UPM)
Department: Matemática Aplicada a la Ingeniería Aeroespacial
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

In this work, a combination of numerical methods applied to thermohydrodynamic lubrication problems with cavitation is presented. It should be emphasized the difficulty of the nonlinear mathematical coupled model involving a free boundary problem, but also the simplicity of the algorithms employed to solve it. So, finite element discretizations for the hydrodynamic and thermal equations combined with upwind techniques for the convection terms and duality methods for nonlinear features are proposed. Additionally, a model describing the movement of the shaft is provided. Considering the shaft as a rigid body this model will consist of an ODE system relating acceleration of the center of gravity and external and pressure loads. The numerical experiments of mechanical stability try to clarify the position of the neutral stability curve. Finally, a rotating machine for ship propulsion involving both axial and radial bearings operating with nonconventional lubricants (seawater to avoid environmental pollution) is analyzed by using laminar and turbulent inertial flows.

Funding Projects

TypeCodeAcronymLeaderTitle
Government of SpainMTM2010-21135-C02-02UnspecifiedUnspecifiedUnspecified

More information

Item ID: 37425
DC Identifier: http://oa.upm.es/37425/
OAI Identifier: oai:oa.upm.es:37425
DOI: 10.1016/j.matcom.2013.09.005
Official URL: http://www.sciencedirect.com/science/article/pii/S0378475413002280#
Deposited by: Memoria Investigacion
Deposited on: 19 Oct 2015 07:36
Last Modified: 19 Oct 2015 07:42
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