Aeroelasticity Analysis of Air-Riding Seals for Aero-Engine Applications

[+] Author and Article Information
A. I. Sayma, C. Bréard, M. Vahdati, M. Imregun

Imperial College of Science Technology and Medicine, Mechanical Engineering Department, Exhibition Road, London SW7 2BX, UK

J. Tribol 124(3), 607-616 (May 31, 2002) (10 pages) doi:10.1115/1.1467086 History: Received July 11, 2000; Revised October 09, 2001; Online May 31, 2002
Copyright © 2002 by ASME
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Time marching procedure for aeroelasticity calculations
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Median dual control volume for edge IJs, showing nodes I and Js, and metric vector η⃗IJs
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Velocity vectors showing the tip gap flow over a transonic turbine blade
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Predicted and measured unsteady pressure time histories for two locations near the tip
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Schematic diagram of a generic seal geometry
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Mach number contours in the seal gap
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Velocity vectors for seal flow
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Convergence time history
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Lift as a function of the seal gap for various pressure ratios
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Lift as a function of the pressure ratio for various seal gaps
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Mass flow rate as a function of the seal gap and pressure ratio
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Time history of the seal vibration (minus sign indicates away from the seal)
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Seal vibration with reduced spring stiffness (minus sign indicates away from the seal)




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