Measurements of Water-Air Flow Phenomena in a Chamber with a Rotating Shaft


The paper concerns the phenomena of the fluid film that occurs in the bearing chamber of an aircraft engine. The geometry of the system includes two concentric cylinders, between which there is a mixture of oil and air. The fluid circulates in a closed circuit. The rotary movement of the inner cylinder causes creation of the fluid film on the walls of the chamber. The article proposes a measurement method that is allowing observation of this fluid film and, in particular, analysis of the movement of the air bubbles occurring in the film. An own model of the bearing chamber with transparent walls was constructed for the research. For the investigation, water was used instead of oil. Observation of the behaviour of the flow was possible thanks to video recordings made with the use of a fast-capture camera. The results presented in the paper include velocity magnitudes of the air bubbles in the fluid film in dependence on the rotational speed of the shaft and water volume fraction and with a range from 0.37 to 0.91 m/s. The results presented in this article can be used for the bearing chamber numerical models validation.


  1. [1]

    Glahn A., Wittig S., Two-phase air/oil flow in aero engine bearing chambers: Characterization of oil film flows. Journal of Engineering for Gas Turbines and Power, 1996, 118: 578–583.

    Article  Google Scholar 

  2. [2]

    Glahn A., Wittig S., Two-phase air/oil flow in aero engine bearing chambers — Assessment of an analytical prediction method for the internal wall heat transfer. International Journal of Rotating Machinery, 1999, 5(3): 155–165.

    Article  Google Scholar 

  3. [3]

    Gorse P., Busam S., Dullenkopf K., Influence of operating condition and geometry on the oil film thickness in aero-engine bearing chamber. Journal of Enginering for Gas Turbines and Power, 2004, 128(1): 103–110.

    Article  Google Scholar 

  4. [4]

    Wang C., Morvan H.P., Hibberd S., Cliffe K.A., Thin film modelling for aero-engine bearing chambers. Proceedings of the ASME turbo expo 2011, vol 1, ASME Turbo Expo 2011, Vancouver, Canada, June 6–10, 2011.

  5. [5]

    Deng X., Weaver B., Watson C., Branagan M., Wood H., Fittro R., Modeling Reichardt’s formula for eddy viscosity in the fluid film of tilting pad thrust bearings. Journal of Engineering for Gas Turbines and Power—Transactions of the ASME, 2018, 140(8): 082505. Paper No: GTP-17-1614.

    Article  Google Scholar 

  6. [6]

    Deng X., Gates H., Fittro R., Wood H., Methodology of turbulence parameter correction in water-lubricated thrust bearings. Journal of Fluids Engineering—Transactions of the ASME, 2019, 141(7): 071104. Paper No: FE-18-1452.

    Article  Google Scholar 

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The research for this paper was financially supported by the E-BREAK — Engine Break- through Components and Subsystems under grant agreement No. 314366.

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Correspondence to Paweł Tiutiurski or Paulina Hercel.

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Tiutiurski, P., Hercel, P., Telega, J. et al. Measurements of Water-Air Flow Phenomena in a Chamber with a Rotating Shaft. J. Therm. Sci. 30, 242–247 (2021).

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  • bearing chamber
  • measurements
  • fluid film velocity
  • two-phase flow