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Using CFD to Improve Aero-Engine Air/Oil Separator Design

[+] Author Affiliations
Carol Eastwick, Stephen Hibberd, Kathy Simmons, Yi Wang, Abdelwahab Aroussi

University of Nottingham, Nottingham, UK

Ian Care

Rolls-Royce plc, Derby, UK

Paper No. PVP2002-1554, pp. 215-220; 6 pages
doi:10.1115/PVP2002-1554
From:
  • ASME 2002 Pressure Vessels and Piping Conference
  • Computational Technologies for Fluid/Thermal/Structural/Chemical Systems With Industrial Applications, Volume 1
  • Vancouver, BC, Canada, August 5–9, 2002
  • Conference Sponsors: Pressure Vessels and Piping Division
  • ISBN: 0-7918-4659-8
  • Copyright © 2002 by ASME

abstract

Within the transmission system of a commercial gas turbine engine the lubrication and cooling of shaft bearings is performed by oil injected into bearing chambers that are typically sealed with air-pressurised labyrinth seals. The subsequent air/oil mixture is scavenged from the bearing chamber with the oil being re-used, whilst the air is discharged overboard via an air/oil separator. Efficiency of separators is becoming a high priority to industry, with any loss of oil an environmental concern. To help improve the design of separators a computational model was created of an existing design and coupled two-phase CFD calculations were performed. A limited amount of experimental data, collected by particle image velocimetry (PIV) was available for validation.

Copyright © 2002 by ASME

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