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TECHNICAL PAPERS: Gas Turbines: Structures and Dynamics

An Integrated Time-Domain Aeroelasticity Model for the Prediction of Fan Forced Response due to Inlet Distortion

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

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

J. Eng. Gas Turbines Power 124(1), 196-208 (Feb 01, 2000) (13 pages) doi:10.1115/1.1416151 History: Received November 01, 1999; Revised February 01, 2000
Copyright © 2002 by ASME
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References

Figures

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Exchange of boundary conditions between the structural and fluid domains
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Single passage mesh; (a) tip section, (b) blade and hub section, (c) periodic boundary
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Steady-state Mach number contours at 85 percent span
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Structural analysis mesh
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Full assembly mesh for the 1F/3EO crossing case
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Steady-state Mach number contour for the 1F/3EO crossing
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Total pressure distortion—1F/3EO crossing
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Steady-state pressure profile at 85 percent span for 1F/3EO
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Unsteady pressure amplitude for the 1F/3EO
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Unsteady pressure phase for 1F/3EO
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Amplitude of the 1F modal displacement time history 1F/3EO
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Unsteady pressure amplitude for 1F/3EO without motion
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Unsteady pressure amplitude for 1F/3EO with motion
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Unsteady pressure amplitude—2F&T (Case 1)
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Unsteady pressure amplitude—2F&1T (Case 2)
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Unsteady pressure amplitude—2F&1T (Case 3)
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Unsteady pressure phase—2F&1T (Case 1)
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Unsteady pressure phase—2F&1T (Case 2)
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Unsteady pressure phase—2F&1T (Case 3)
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2F modal displacement amplitude time history—2F&1T/8EO crossing—Case 3)
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1T modal displacement amplitude time history—2F&1T/8EO crossing with motion—Cases 1 and 2
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2F modal displacement time history—2F&IT/8EO crossing with motion—Cases 1 and 2
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Unsteady pressure amplitude—2S/8EO
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Unsteady pressure phase—2S/8EO
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2S modal displacement time history—2S/8EO crossing

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