Ship underwater noise assessment by the Acoustic Analogy part II: hydroacoustic analysis of a ship scaled model (Articolo in rivista)

Type

• Articolo in rivista (Classe)
• Prodotto della ricerca (Classe)

Label

• Ship underwater noise assessment by the Acoustic Analogy part II: hydroacoustic analysis of a ship scaled model (Articolo in rivista) (literal)

Anno

• 2014-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

• 10.1007/s00773-013-0236-z (literal)

Alternative label

• Sandro IANNIELLO, Roberto MUSCARI, Andrea DI MASCIO (2014)
  Ship underwater noise assessment by the Acoustic Analogy part II: hydroacoustic analysis of a ship scaled model
  in Journal of marine science and technology (Print)
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Sandro IANNIELLO, Roberto MUSCARI, Andrea DI MASCIO (literal)

Pagina inizio

• 52 (literal)

Pagina fine

• 74 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url

• http://link.springer.com/article/10.1007%2Fs00773-013-0236-z (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 19 (literal)

Rivista

• Journal of marine science and technology (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• CNR-INSEAN, CNR-INSEAN, CNR-IAC (literal)

Titolo

• Ship underwater noise assessment by the Acoustic Analogy part II: hydroacoustic analysis of a ship scaled model (literal)

Abstract

• In this paper the Acoustic Analogy is used to predict the underwater noise from a complete scaled ship model in a steady course. The numerical investigation is performed by coupling an incompressible RANS code, equipped with a level-set approach to account for the fundamental time evolution of the free surface, to a FWHbased hydroacoustic solver, here suitably designed to manage the huge set of data coming from a full-unsteady hydrodynamic simulation. The results reveal the overall limited contribution from the propeller thickness and loading noise components and the fundamental one from the nonlinear quadrupole sources. The comparison between the hydrodynamic and hydroacoustic solutions point out the noticeable scattering effects due to the hull surface, the possible influence of sound refractions at the free surface and, above all, the leading role played by the turbulent fluctuating component of the velocity field. Finally, by computing the pressure time histories at a prescribed set of virtual hydrophones and turning them into the frequency domain, the ship noise footprint in dB is traced out, thus showing how the Acoustic Analogy can be effectively used to analyze the ship hydroacoustic behavior, both in terms of amplitude and directivity. (literal)

Prodotto di

• Istituto per le applicazioni del calcolo \"Mauro Picone\" (IAC) (Istituto)

Autore CNR

• SANDRO IANNIELLO (Unità di personale interno)
• ANDREA DI MASCIO (Unità di personale interno)
• ROBERTO MUSCARI (Unità di personale interno)

Insieme di parole chiave

• Keywords of "Ship underwater noise assessment by the Acoustic Analogy part II: hydroacoustic analysis of a ship scaled model" (Insieme di parole chiave)

Incoming links:

Prodotto

• Istituto per le applicazioni del calcolo \"Mauro Picone\" (IAC) (Istituto)
• http://www.cnr.it/ontology/cnr/individuo/modulo/ID8953
• http://www.cnr.it/ontology/cnr/individuo/modulo/ID8858

Autore CNR di

• SANDRO IANNIELLO (Unità di personale interno)
• ROBERTO MUSCARI (Unità di personale interno)
• ANDREA DI MASCIO (Unità di personale interno)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Journal of marine science and technology (Rivista)

Insieme di parole chiave di

• Keywords of "Ship underwater noise assessment by the Acoustic Analogy part II: hydroacoustic analysis of a ship scaled model" (Insieme di parole chiave)