This paper describes the theoretical modelling of the flow in a rotor-stator wheelspace with ingestion through the rim-seal. The predictions are compared with experimental measurements of pressure taken for an axial clearance rim-seal downstream of a set of nozzle guide vanes. The mainstream pressure asymmetry caused by the guide vanes was measured in the absence of coolant flow. Using this data, three-dimensional CFD calculations were carried out, providing both predictions of the cavity pressures and insight into the flow mechanisms involved. The CFD predictions gave good agreement with experiment at low coolant flow rates. However, at high coolant flow rates, disagreement with the experimental results is evident, suggesting that the interaction between the coolant flow and the mainstream flow through the nozzle guide vanes could no longer be ignored.
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ASME 1997 International Gas Turbine and Aeroengine Congress and Exhibition
June 2–5, 1997
Orlando, Florida, USA
Conference Sponsors:
- International Gas Turbine Institute
ISBN:
978-0-7918-7870-5
PROCEEDINGS PAPER
Aerodynamics of Turbine Rim-Seal Ingestion
Nicholas J. Hills,
Nicholas J. Hills
University of Sussex, Brighton, UK
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Alan B. Turner,
Alan B. Turner
University of Sussex, Brighton, UK
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John W. Chew
John W. Chew
Rolls-Royce plc, Derby, UK
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Nicholas J. Hills
University of Sussex, Brighton, UK
Tony Green
University of Sussex, Brighton, UK
Alan B. Turner
University of Sussex, Brighton, UK
John W. Chew
Rolls-Royce plc, Derby, UK
Paper No:
97-GT-268, V003T09A051; 7 pages
Published Online:
December 24, 2014
Citation
Hills, NJ, Green, T, Turner, AB, & Chew, JW. "Aerodynamics of Turbine Rim-Seal Ingestion." Proceedings of the ASME 1997 International Gas Turbine and Aeroengine Congress and Exhibition. Volume 3: Heat Transfer; Electric Power; Industrial and Cogeneration. Orlando, Florida, USA. June 2–5, 1997. V003T09A051. ASME. https://doi.org/10.1115/97-GT-268
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