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TECHNICAL PAPERS

The Impact of Viscous Effects on the Aerodynamic Damping of Vibrating Transonic Compressor Blades—A Numerical Study

[+] Author and Article Information
Björn Grüber

Daimler Chrysler Aerospace, MTU Munich, Munich, Germanyemail: bjoern.grueber@muc.mtu.dasa.de

Volker Carstens

Institute of Aeroelasticity, DLR, Göttingen, Germanyemail: volker.carstens@dlr.de

J. Turbomach 123(2), 409-417 (Feb 01, 2000) (9 pages) doi:10.1115/1.1354139 History: Received February 01, 2000
Copyright © 2001 by ASME
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References

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Figures

Grahic Jump Location
Aerodynamic work coefficient, Navier-Stokes results, ω* =0.1, Ma1=0.85,Re1=5.0⋅105, σ=+90 deg
Grahic Jump Location
Aerodynamic work coefficient, Euler results, ω* =0.1, Ma1=0.85, σ=+90 deg
Grahic Jump Location
Aerodynamic work coefficient, Navier-Stokes results, ω* =0.3, Ma1=0.85,Re1=5⋅105, σ=+90 deg
Grahic Jump Location
Aerodynamic work coefficient, Euler results, ω* =0.3, Ma1=0.85, σ=+90 deg
Grahic Jump Location
Mach contours for different timesteps, Navier-Stokes results, α=2.0 deg, ω* =0.3, Ma1=0.85,Re1=5⋅105, σ=+90 deg, —=sonic line
Grahic Jump Location
Aerodynamic damping as function of reduced frequency, Ma1=0.85, σ=+90 deg
Grahic Jump Location
Aerodynamic damping as function of inflow Mach number, ω* =0.3, σ=+90 deg
Grahic Jump Location
Aerodynamic damping as function of IBPA, Euler results, Ma1=0.85, α=0.5 deg
Grahic Jump Location
Wall friction coefficient for subsonic and transonic steady-state flow (Re1=5⋅105)
Grahic Jump Location
Isentropic Mach number distribution for subsonic and transonic steady-state flow (Re1=5⋅105)
Grahic Jump Location
Compressor cascade geometry and operating data
Grahic Jump Location
Mach contours for Cwk=0.25 and 0.46, —=sonic line
Grahic Jump Location
Computed and measured time history of static pressure in the midplane between profile and wall (the absolute phase is arbitrary)
Grahic Jump Location
Composition of grids near the blade’s surface

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