Experimental investigation of a leaf seal prototype at engine-representative speeds and pressures

Pekris, Michael J., Franceschini, Gervas, Jahn, Ingo H. J. and Gillespie, David R. H. (2016) Experimental investigation of a leaf seal prototype at engine-representative speeds and pressures. Journal of Engineering for Gas Turbines and Power, 138 7: . doi:10.1115/1.4031875


Author Pekris, Michael J.
Franceschini, Gervas
Jahn, Ingo H. J.
Gillespie, David R. H.
Title Experimental investigation of a leaf seal prototype at engine-representative speeds and pressures
Journal name Journal of Engineering for Gas Turbines and Power   Check publisher's open access policy
ISSN 0742-4795
1528-8919
Publication date 2016-07-01
Sub-type Article (original research)
DOI 10.1115/1.4031875
Open Access Status Not yet assessed
Volume 138
Issue 7
Total pages 9
Place of publication New York, NY, United States
Publisher The American Society of Mechanical Engineers
Language eng
Abstract The application of compliant filament seals to jet engine secondary air systems has been shown to yield significant improvements in specific fuel consumption and improved emissions. One such technology, the leaf seal, provides comparable leakage performance to the brush seal but offers higher axial rigidity, significantly reduced radial stiffness, and improved compliance with the rotor. Investigations were carried out on the Engine Seal Test Facility at the University of Oxford into the behavior of a leaf seal prototype at high running speeds. The effects of pressure, speed, and cover plate geometry on leakage and torque are quantified. Earlier publications on leaf seals showed that air-riding at the contact interface might be achieved. Results are presented which appear to confirm that air-riding is taking place. Consideration is given to a possible mechanism for torque reduction at high rotational speeds.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Mechanical & Mining Engineering Publications
 
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Created: Thu, 26 Jan 2017, 23:19:39 EST by Ingo Jahn on behalf of School of Mechanical and Mining Engineering