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research article

Parametric Reduced Order Model of a Gas Bearings Supported Rotor

Goutaudier, Dimitri  
•
Schiffmann, Jüurg
•
Nobile, Fabio  
October 17, 2023
Journal of Engineering for Gas Turbines and Power

Gas bearings use pressurized gas as a lubricant to support and guide rotating machinery. These bearings have a number of advantages over traditional lubricated bearings, including higher efficiency in a variety of applications and reduced maintenance requirements. However, they are more complex to operate and exhibit nonlinear behaviors. This paper presents a parametric hyper reduced order model (h-ROM) of a gas bearings supported rotor enabling to speed up the computations up to a factor 100 while preserving satisfactory accuracy. A Galerkin projection setting is employed to reduce the dimension of the governing equations and the nonlinear terms are efficiently tackled with a sparse sampling technique. The performances of the h-ROM are compared to a high fidelity model both in terms of accuracy and computation time, demonstrating the potential for future anomaly detection applications.

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Type
research article
DOI
10.1115/1.4063424
Author(s)
Goutaudier, Dimitri  
Schiffmann, Jüurg
Nobile, Fabio  

EPFL

Date Issued

2023-10-17

Published in
Journal of Engineering for Gas Turbines and Power
Volume

146

Issue

1

Start page

GTP

End page

23

Subjects

gas bearings

•

dynamical system

•

reduced order model

•

parametric adaptation

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LAMD  
CSQI  
Available on Infoscience
November 2, 2023
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/202001
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