A fluid-structure-thermal model for bump-type foil thrust bearings

Qin, Kan, Jacobs, Peter A., Keep, Joshua A., Li, Daijin and Jahn, Ingo H. (2018) A fluid-structure-thermal model for bump-type foil thrust bearings. Tribology International, 121 481-491. doi:10.1016/j.triboint.2018.02.008

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Author Qin, Kan
Jacobs, Peter A.
Keep, Joshua A.
Li, Daijin
Jahn, Ingo H.
Title A fluid-structure-thermal model for bump-type foil thrust bearings
Journal name Tribology International   Check publisher's open access policy
ISSN 0301-679X
1879-2464
Publication date 2018-05-01
Year available 2018
Sub-type Article (original research)
DOI 10.1016/j.triboint.2018.02.008
Open Access Status File (Author Post-print)
Volume 121
Start page 481
End page 491
Total pages 11
Place of publication Kidlington, Oxford, United Kingdom
Publisher Pergamon Press
Language eng
Subject 2211 Mechanics of Materials
2210 Mechanical Engineering
3110 Surfaces and Interfaces
2508 Surfaces, Coatings and Films
Abstract This paper presents a multi-physics multi-timescale computational framework for the three-dimensional and two-way coupled fluid-structure-thermal simulation of foil thrust bearings. Individual solvers for the transient fluid flow, structural deformation, heat conduction and the coupling strategy are discussed. Next, heat transfer models of the solid structures within foil thrust bearings are also described in detail. The result is a multi-physics computational framework that can predict the steady state and dynamic performance of foil thrust bearings. Numerical simulations of foil thrust bearings with air and CO are then performed. It is found that the centrifugal pumping that naturally occurs in CO bearings due to the high fluid density provides a new and effective cooling mechanism for the CO bearing.
Formatted abstract
This paper presents a multi-physics multi-timescale computational framework for the three-dimensional and two-way coupled fluid-structure-thermal simulation of foil thrust bearings. Individual solvers for the transient fluid flow, structural deformation, heat conduction and the coupling strategy are discussed. Next, heat transfer models of the solid structures within foil thrust bearings are also described in detail. The result is a multi-physics computational framework that can predict the steady state and dynamic performance of foil thrust bearings. Numerical simulations of foil thrust bearings with air and CO2 are then performed. It is found that the centrifugal pumping that naturally occurs in CO2 bearings due to the high fluid density provides a new and effective cooling mechanism for the CO2 bearing.
Keyword Foil thrust bearings
Multiphysics simulation
Supercritical CO2 cycle
Groove effect
Q-Index Code C1
Q-Index Status Provisional Code
Grant ID 51679202
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
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Created: Sat, 14 Apr 2018, 20:01:21 EST