On a General Method of Unsteady Potential Calculation Applied to the Compression Stages of a Turbomachine—Part II: Experimental Comparison

[+] Author and Article Information
S. Kouidri, T. Belamri, F. Bakir, R. Rey

Laboratoire d’ Energetique e de Mechanique des Fluides Interne, Ecole Nationale Superieure d’ Arts et Metiers, 151, boulevard de l’Hopital, 75013 Paris, France

J. Fluids Eng 123(4), 787-792 (Jun 06, 2001) (6 pages) doi:10.1115/1.1399287 History: Received October 01, 1999; Revised June 06, 2001
Copyright © 2001 by ASME
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Aeroacoustic test bench of the centrifugal fan
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Global noise measured at 1.2 m downstream of the stage for various axial distances rotor-stator-Machine N63RS at 1600 rpm
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Spectral analysis: experimental data-Machine N63RS
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Spectral analysis: potential calculation-Machine N63RS
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Comparison theory-experiment
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Centrifugal pump equipped with its volute
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General diagram of the pump test rig of LEMFI
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Position of the dynamic pressure sensors
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Photograph of cavitation pocket (dRS=25 mm,qv/qn=1,N=900 rpm,NPSH=6 m)
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Comparison of the experimental pressure fluctuations in the blade to blade channels in the zones close and far from the volute tongue (qv/qn=1,N=900 rpm,NPSH=9 m)
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Theoretical (a) and experimental (b) signals of pressure sensors 1 to 5 of ψ1 (qv/qvn=1,N=900 rpm,NPSH=9 m)
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Theoretical (a) and experimental (b) signals of pressure sensors 1 to 5 of ψ2 (qv/qvn=1,N=900 rpm,NPSH=9 m)
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Theoretical comparison of the local dynamic pressure fluctuations and those generated by the blade passage (qv/qn=1,N=900 rpm,NPSH=9 m)
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Temporal signal and spectral analysis of the measured and calculated pressure fluctuations in the point 1 of the volute and ψ3 (qv/qn=1,N=900 rpm,NPSH=9 m)




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