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TECHNICAL PAPERS: Gas Turbines: Heat Transfer

Numerical Simulation of Three-Dimensional Bristle Bending in Brush Seals

[+] Author and Article Information
Cesare Guardino

CD-adapco Group, London Office, 200 Shepherd Bush Road, London W6 7NY, UKe-mail: cesare@uk.cd-adapco.com

John W. Chew

School of Engineering, University of Surrey, Guildford, Surrey GU2 7XH, UKe-mail: j.chew@surrey.ac.uk

J. Eng. Gas Turbines Power 127(3), 583-591 (Jun 24, 2005) (9 pages) doi:10.1115/1.1850943 History: Received October 01, 2003; Revised March 01, 2004; Online June 24, 2005
Copyright © 2005 by ASME
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References

Figures

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Schematic of a brush seal
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Global and bristle-oriented coordinates (Y=const plane)
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Bristle deflections and notation
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3D bristle-to-bristle interactions
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Bristle interactions in a Z=const plane
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Ellipse geometry and notation
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Free bristle-point movement in a ξ=const plane
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Rotation of reaction forces
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Effect of varying the Young’s modulus E(Δp=1.0 bar,Zrotor=0.20 mm, ϕ=45 deg)
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Effect of increasing the lay-angle ϕ (Δp=1.0 bar,Zrotor=0.20 mm)
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Effect of increasing rotor interference Zrotor(Δp=4.0 bar, ϕ=45 deg)
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Effect of increasing the pressure load Δp(Zrotor=0.20 mm, ϕ=45 deg)
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Rotor interference, 3D global view
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Radial force on rotor (Δp=1.0 bar,Zrotor=0.20 mm, ϕ=45 deg)
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Bristle tip positions (Δp=1.0 bar,Zrotor=0.20 mm, ϕ=45 deg)
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Deflections of downstream bristle row (Δp=1.0 bar,Zrotor=0.20 mm, ϕ=45 deg)
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Deflections of first bristle column (Δp=1.0 bar,Zrotor=0.20 mm, ϕ=45 deg)
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3D bristle deflections (Δp=0.0 bar,Zrotor=0.20 mm, ϕ=45 deg, δ=0.0 mm)
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Bristle tip positions (Δp=0.0 bar,Zrotor=0.20 mm, ϕ=45 deg, δ=0.0 mm)
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Incursion of a single bristle into a hexagonally-packed brush
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Bending of a row of bristles
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Bristle-backing ring reactions

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