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

Hilfer, Michael; Hogg, Simon; Ingram, Grant

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

Hilfer, M., Hogg, S., & Ingram, G. (2015, June). Experimental Validation of a Curtain Type Fluidic Jet Seal on a Turbine Rotor Shroud. Presented at ASME Turbo Expo 2015: Turbine Technical Conference and Exposition American Society of Mechanical Engineers, Montreal, Canada

• Presentation Conference Type: Conference Paper (published)
• Conference Name: ASME Turbo Expo 2015: Turbine Technical Conference and Exposition American Society of Mechanical Engineers
• 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
• Public URL: https://durham-repository.worktribe.com/output/1152438
• Additional Information: Paper No. GT2015-42624