Numerical Investigation of Nonlinear Fluid-Structure Interaction in Vibrating Compressor Blades

[+] Author and Article Information
Volker Carstens

Institute of Aeroelasticity, DLR, Göttingen, Germanye-mail: volker.carstens@dlr.de

Joachim Belz

Institute of Aeroelasticity, DLR, Göttingen, Germanye-mail: joachim.belz@dlr.de

J. Turbomach 123(2), 402-408 (Feb 01, 2000) (7 pages) doi:10.1115/1.1354138 History: Received February 01, 2000
Copyright © 2001 by ASME
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Structural dynamic cascade model with additional structural damping and aerodynamic coupling
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Coupled time integration of fluid and aeroelastic equations
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Influence of the initial conditions: Deflection of blade No. 1 only and initial displacement according to traveling wave mode with σ=36 deg
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Free blade vibrations in subsonic flow, Ma1=0.8, blade No. 1
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Free blade vibrations in subsonic flow, Ma1=0.8, blade Nos. 20, 1, 2, and 11 after 490 ms
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Total structural energy of the cascade in subsonic flow
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Flutter boundary in subsonic flow, Ma1=0.8
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Free blade vibrations in transonic flow, 20 blades, Ma1=0.9
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Iso-Machlines for choked blade channels
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Free blade vibrations in transonic flow, 19 blades, Ma1=0.9
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Total structural energy of the cascade in transonic flow
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Flutter boundary in transonic flow




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