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Experimental Validation of a Curtain Type Fluidic Jet Seal on a Turbine Rotor Shroud

Hilfer, Michael; Hogg, Simon; Ingram, Grant

Authors

Michael Hilfer



Abstract

This paper describes the design and testing of a fluidic “air-curtain” type seal application to reduce tip leakages on a small high-speed single stage axial turbine. The initial experimental investigations were carried out to demonstrate the application of the fluidic type seal on a “frozen rotor” test of a turbine. The “frozen rotor” test is carried out using an actual turbine rotor in a static test facility without rotation. These preliminary tests provide the first experimental validation of fluidic “air-curtain” type seals working to reduce over-tip leakage in a turbine shroud on a actual turbine geometry. Ultimately the final stage of the work will be to demonstrate the fluidic seal working in a full rotating facility but these results provide a logical and important step towards that ultimate goal.

Citation

Montreal, Quebec, Canada, June 15–19, 2015. https://doi.org/10.1115/gt2015-42624

Conference Name ASME Turbo Expo 2015: Turbine Technical Conference and Exposition American Society of Mechanical Engineers
Conference Location Montreal, Canada
Acceptance Date Jun 19, 2015
Publication Date 2015-06
Deposit Date Feb 3, 2016
Publisher American Society of Mechanical Engineers
Volume 5C
Book Title Proceedings of the ASME Turbo Expo 2015: Turbine Technical Conference and Exposition. Volume 5C: Heat Transfer
Montreal, Quebec, Canada, June 15–19, 2015
DOI https://doi.org/10.1115/gt2015-42624
Additional Information Paper No. GT2015-42624