Fluid flow and thermal features of gas foil thrust bearings at moderate operating temperatures

Abdelrasoul M. Gad, Shigehiko Kaneko

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

This study aims to analyze the flow characteristics and the thermal features of foil thrust bearing. The flow in the gas film is modeled with 2D compressible Reynolds equation including effects of centrifugal forces in the gas film. The Couette Approximation is adopted for the analysis of temperature distribution in the gas film, and the small perturbations method is used to calculate its dynamic force coefficients. The results show that the Couette Approximation can be used to calculate the temperature distribution in foil thrust bearing with reasonable accuracy and the analysis of the fluid flow reveals that most of the side-leakage occurs in the low-temperature converging region removing less than 5% of the heat generated in the gas film. Furthermore, with the proper control of cooling flow rate through the bump foils, more than 70% of the heat generated in the gas film can be removed.

Original languageEnglish
Title of host publicationProceedings of the 9th IFToMM International Conference on Rotor Dynamics
EditorsPaolo Pennacchi
PublisherKluwer Academic Publishers
Pages1223-1233
Number of pages11
ISBN (Electronic)9783319065892
DOIs
Publication statusPublished - 2015
Externally publishedYes
Event9th IFToMM International Conference on Rotor Dynamics, 2014 - Milan, Italy
Duration: 2014 Sep 222014 Sep 25

Publication series

NameMechanisms and Machine Science
Volume21
ISSN (Print)2211-0984
ISSN (Electronic)2211-0992

Conference

Conference9th IFToMM International Conference on Rotor Dynamics, 2014
CountryItaly
CityMilan
Period14/9/2214/9/25

Keywords

  • Foil thrust bearing
  • Static and dynamic characteristics
  • Thermal elastohydrodynamic lubrication

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering

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