This two-part paper presents detailed experimental investigations of unsteady aerodynamic blade row interactions in the four-stage low-speed research compressor of Dresden. In Part I of the paper the unsteady profile pressure distributions for the nominal setup of the compressor are discussed. Furthermore the effect of blade row clocking on the unsteady profile pressures is investigated. Part II deals with the unsteady aerodynamic blade forces, which are determined from the measured profile pressure distributions. A method to calculate the aerodynamic blade forces on the basis of the experimental data is presented. The resulting aerodynamic blade forces are discussed for the rotor and stator blade rows of the first stage and the third stage of the compressor. Different operating points between design point and stability limit of the compressor were chosen to investigate the influence of loading on the aerodynamic force excitation. The time traces and the frequency contents of the unsteady aerodynamic blade force are discussed. Strong periodic influences of the incoming wakes and of potential effects of downstream blade rows can be observed. The amplitude and shape of the unsteady aerodynamic blade force depend on the interaction of the superimposed influences of the blade rows.
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e-mail: mailach@tus.mw.tu-dresden.de
e-mail: lmueller@tus.mw.tu-dresden.de
e-mail: kvogeler@tus.mw.tu-dresden.de
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October 2004
Technical Papers
Rotor-Stator Interactions in a Four-Stage Low-Speed Axial Compressor—Part II: Unsteady Aerodynamic Forces of Rotor and Stator Blades
Ronald Mailach,
e-mail: mailach@tus.mw.tu-dresden.de
Ronald Mailach
Dresden University of Technology, Institute for Fluid Mechanics, 01062 Dresden, Germany
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Lutz Mu¨ller,
e-mail: lmueller@tus.mw.tu-dresden.de
Lutz Mu¨ller
Dresden University of Technology, Institute for Fluid Mechanics, 01062 Dresden, Germany
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Konrad Vogeler
e-mail: kvogeler@tus.mw.tu-dresden.de
Konrad Vogeler
Dresden University of Technology, Institute for Fluid Mechanics, 01062 Dresden, Germany
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Ronald Mailach
Dresden University of Technology, Institute for Fluid Mechanics, 01062 Dresden, Germany
e-mail: mailach@tus.mw.tu-dresden.de
Lutz Mu¨ller
Dresden University of Technology, Institute for Fluid Mechanics, 01062 Dresden, Germany
e-mail: lmueller@tus.mw.tu-dresden.de
Konrad Vogeler
Dresden University of Technology, Institute for Fluid Mechanics, 01062 Dresden, Germany
e-mail: kvogeler@tus.mw.tu-dresden.de
Contributed by the International Gas Turbine Institute (IGTI) of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS for publication in the ASME JOURNAL OF TURBOMACHINERY. Paper presented at the International Gas Turbine and Aeroengine Congress and Exhibition, Vienna, Austria, June 13–17, 2004, Paper No. 2004-GT-53099. Manuscript received by IGTI, October 1, 2003; final revision, March 1, 2004. IGTI Review Chair: A. J. Strazisar.
J. Turbomach. Oct 2004, 126(4): 519-526 (8 pages)
Published Online: December 29, 2004
Article history
Received:
October 1, 2003
Revised:
March 1, 2004
Online:
December 29, 2004
Citation
Mailach, R., Mu¨ller, L., and Vogeler, K. (December 29, 2004). "Rotor-Stator Interactions in a Four-Stage Low-Speed Axial Compressor—Part II: Unsteady Aerodynamic Forces of Rotor and Stator Blades ." ASME. J. Turbomach. October 2004; 126(4): 519–526. https://doi.org/10.1115/1.1791642
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