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TECHNICAL PAPERS

Investigation of Unsteady Aerodynamic Blade Excitation Mechanisms in a Transonic Turbine Stage—Part I: Phenomenological Identification and Classification

[+] Author and Article Information
Björn Laumert

KTH—The Royal Institute of Technology, Heat and Power Technology, 100 44 Stockholm, Swedene-mail: laumert@egi.kth.se

Hans Mårtensson

Volvo Aero Corporation, Propulsion Systems, Military Engines Division, 461 81 Trollhättan, Sweden

Torsten H. Fransson

KTH—The Royal Institute of Technology, Heat and Power Technology, 100 44 Stockholm, Sweden

J. Turbomach 124(3), 410-418 (Jul 10, 2002) (9 pages) doi:10.1115/1.1458577 History: Received October 24, 2000; Online July 10, 2002
Copyright © 2002 by ASME
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References

Figures

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Contour plots of the pressure gradient modulus showing the stage passage at midspan. High Mach number OP.
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Space-time map of the vane surface pressure perturbations for the subsonic test case at 50% span
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Space-time map of the vane surface pressure perturbations for the high M2 case at 50% span
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Space-time map of the vane surface pressure perturbations for the design test case at 50% span
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Space-time map of the vane surface pressure perturbations for the design test case at 15% span
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Space-time map of the vane surface pressure perturbations for the design test case at 85% span.
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Space-time map of the rotor surface pressure perturbations for the subsonic test case at 50% span
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Contour plot of the pressure perturbations for the subsonic test case at T=0.43. Stage passage at 50% span.
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Space-time map of the rotor surface pressure perturbations for the high M2 test case at 50% span
Grahic Jump Location
Space-time map of the rotor surface pressure perturbations for the design test case at 50% span
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Contour plot series of the pressure perturbations for the design test case. Stage passage at 50% span.
Grahic Jump Location
Space-time map of the rotor surface pressure perturbations for the design test case at 15% span
Grahic Jump Location
Space-time map of the rotor surface pressure perturbations for the design test case at 85 % span

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