The paper illustrates the results of an experimental campaign conducted in the Cavitating Pump Rotordynamic Test Facility at ALTA S.p.A., aimed at characterizing the rotordynamic forces acting on a whirling four-bladed, tapered-hub, variable-pitch inducer, designated as DAPAMITO4. The roles of the imposed whirl motion of the rotor, flow coefficient, cavitation number and liquid temperature have been investigated. A novel experimental technique, consisting in measuring the continuous spectra of the forces as functions of the whirl ratio, has been developed and validated. This technique gives the possibility of extracting valuable information from the experiments by clearly identifying the qualitative and quantitative behavior of the forces, and is therefore useful to catch the unlikely foreseeable complexity of the rotordynamic forces and their consequences on the stability of axial inducers.
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December 2011
Research Papers
Continuous Spectrum of the Rotordynamic Forces on a Four Bladed Inducer
Luca d’Agostino
Luca d’Agostino
Professor
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Angelo Pasini
Research Engineer
Lucio Torre
Project Manager
Angelo Cervone
Project Manager
Luca d’Agostino
Professor
J. Fluids Eng. Dec 2011, 133(12): 121101 (10 pages)
Published Online: December 19, 2011
Article history
Received:
August 24, 2011
Revised:
October 6, 2011
Online:
December 19, 2011
Published:
December 19, 2011
Citation
Pasini, A., Torre, L., Cervone, A., and d’Agostino, L. (December 19, 2011). "Continuous Spectrum of the Rotordynamic Forces on a Four Bladed Inducer." ASME. J. Fluids Eng. December 2011; 133(12): 121101. https://doi.org/10.1115/1.4005258
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