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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Saren, V. E., 1994, “Some Ways of Reducing Unsteady Blade Loads Due to Blade Row Hydrodynamic Interaction in Axial Flow Turbomachines,” Second International Conference EAHE, Pilson, Czech Republic, pp. 160–165.
Chung,  M. H., and Wo,  A. M., 1997, “Navier-Stokes and Potential Calculations of Axial Spacing Effect on Vortical and Potential Disturbances and Gust Response in Axial Compressor,” ASME J. Turbomach., 119, pp. 472–481.
Rai,  M. M., 1987, “Navier-Stokes Simulations of Rotor-Stator Interactions Using Patched and Overlaid Grids,” AIAA J., 3, No. 5, pp. 387–396.
Qin,  W., and Tsukammoto,  H., 1997, “Theorical Study of Pressure Fluctuations Downstream of a Diffuser Pump Impeller Part II: Effects of Volute, Flow Rate and Radial Gap.” ASME J. Fluids Eng., 119, pp. 653–658.
ISO 5801, Industrial Fans-Performance Testing Using Standardized Airways, 1997 (in French).
ISO 5136, Determination of Sound Power Radiated by Fans and Other Air-Moving Devices-In-Duct Method, 2000 (in French).
Wo,  A. M., Chung,  M. H., and Hsu,  S. T., 1997, “Gust response decomposition in a stator-rotor axial compressor with varying axial gap,” J. Propul. Power, 13, No. 1, pp. 160–165.
Maaloum. A., 1999, “Etude des Phènomènes Instationnaires Dans les Turbomachines. Application à l’Aéroacoustique des Ventilateurs Axiaux,” Ph.D thesis, Ecole Nationale Supérieure d’Arts et Métiers, Department of Mechanical Engineering, Paris, France (in French).
Bakir, F., Rey, R., Noguera, R., Massouh, F., and Kouidri, S., 1993, “Computer Aided Design of Helico-Centrifugal Pumps,” ASME Pumping Machinery, Vol. 154, pp. 63–74.


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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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Aeroacoustic test bench of the centrifugal fan




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