The aim of the presented work was to identify factors that influence the oil split between the two offtakes of a vented aero-engine bearing chamber. The impact of different vent and scavenge offtake designs was experimentally investigated with a test rig at the ITS. The generic bearing chamber was also equipped with ten film thickness sensors. The film measurements allowed a further evaluation of the mechanisms behind different oil splits. Two of the examined offtake features ensured a very constant oil split: a protruding vent and a covered ramp offtake. The latter also decreased the oil film thickness on the bearing chamber walls significantly. Furthermore, an influence of a non-uniform seal gap was detected which altered the oil split by several percent.
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ASME Turbo Expo 2012: Turbine Technical Conference and Exposition
June 11–15, 2012
Copenhagen, Denmark
Conference Sponsors:
- International Gas Turbine Institute
ISBN:
978-0-7918-4470-0
PROCEEDINGS PAPER
Influences on the Oil Split Between the Offtakes of an Aero-Engine Bearing Chamber
Wolfram Kurz,
Wolfram Kurz
Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany
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Klaus Dullenkopf,
Klaus Dullenkopf
Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany
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Hans-Jörg Bauer
Hans-Jörg Bauer
Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany
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Wolfram Kurz
Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany
Klaus Dullenkopf
Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany
Hans-Jörg Bauer
Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany
Paper No:
GT2012-69412, pp. 2251-2259; 9 pages
Published Online:
July 9, 2013
Citation
Kurz, W, Dullenkopf, K, & Bauer, H. "Influences on the Oil Split Between the Offtakes of an Aero-Engine Bearing Chamber." Proceedings of the ASME Turbo Expo 2012: Turbine Technical Conference and Exposition. Volume 4: Heat Transfer, Parts A and B. Copenhagen, Denmark. June 11–15, 2012. pp. 2251-2259. ASME. https://doi.org/10.1115/GT2012-69412
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