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Fluid Flow and Thermal Features of Gas Foil Thrust Bearings at Moderate Operating Temperatures

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Proceedings of the 9th IFToMM International Conference on Rotor Dynamics

Part of the book series: Mechanisms and Machine Science ((Mechan. Machine Science,volume 21))

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.

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Acknowledgments

This work is funded by the Japan Society for the Promotion of Science (JSPS), Grant No (24.02361). The authors would like to thank the JSPS for supporting this activity.

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Authors and Affiliations

  1. Faculty of Engineering, Department of Mechanical Engineering, Assiut University, Assiut, Egypt

    Abdelrasoul M. Gad

  2. Department of Mechanical Engineering, School of Engineering, University of Tokyo, Tokyo, Japan

    Abdelrasoul M. Gad & Shigehiko Kaneko

Authors
  1. Abdelrasoul M. Gad
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  2. Shigehiko Kaneko
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Corresponding author

Correspondence to Abdelrasoul M. Gad .

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Editors and Affiliations

  1. Mechanical Engineering, Politecnico di Milano, Milano, Italy

    Paolo Pennacchi

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© 2015 Springer International Publishing Switzerland

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Gad, A.M., Kaneko, S. (2015). Fluid Flow and Thermal Features of Gas Foil Thrust Bearings at Moderate Operating Temperatures. In: Pennacchi, P. (eds) Proceedings of the 9th IFToMM International Conference on Rotor Dynamics. Mechanisms and Machine Science, vol 21. Springer, Cham. https://doi.org/10.1007/978-3-319-06590-8_100

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  • DOI: https://doi.org/10.1007/978-3-319-06590-8_100

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-319-06589-2

  • Online ISBN: 978-3-319-06590-8

  • eBook Packages: EngineeringEngineering (R0)

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