http://www.cnr.it/ontology/cnr/individuo/prodotto/ID321649
Frequency-domain method for discrete frequency noise prediction of rotors in arbitrary steady motion (Articolo in rivista)
- Type
- Label
- Frequency-domain method for discrete frequency noise prediction of rotors in arbitrary steady motion (Articolo in rivista) (literal)
- Anno
- 2012-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1016/j.jsv.2012.06.004 (literal)
- Alternative label
Gennaretti, Massimo; Testa, Claudio; Bernardini, Giovanni (2012)
Frequency-domain method for discrete frequency noise prediction of rotors in arbitrary steady motion
in Journal of sound and vibration
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Gennaretti, Massimo; Testa, Claudio; Bernardini, Giovanni (literal)
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- ISI Web of Science (WOS) (literal)
- Scopu (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- Universita degli Studi Roma Tre; Consiglio Nazionale delle Ricerche (literal)
- Titolo
- Frequency-domain method for discrete frequency noise prediction of rotors in arbitrary steady motion (literal)
- Abstract
- A novel frequency-domain formulation for the prediction of the tonal noise emitted by rotors in arbitrary steady motion is presented. It is derived from Farassats 'Formulation 1A', that is a time-domain boundary integral representation for the solution of the Ffowcs-Williams and Hawkings equation, and represents noise as harmonic response to body kinematics and aerodynamic loads via frequency-response-function matrices. The proposed frequency-domain solver is applicable to rotor configurations for which sound pressure levels of discrete tones are much higher than those of broadband noise. The numerical investigation concerns the analysis of noise produced by an advancing helicopter rotor in bladevortex interaction conditions, as well as the examination of pressure disturbances radiated by the interaction of a marine propeller with a non-uniform inflow. © 2012 Elsevier Ltd. (literal)
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