Mechanisms of evolution of the propeller wake in the transition and far fields (Articolo in rivista)

Type
Label
  • Mechanisms of evolution of the propeller wake in the transition and far fields (Articolo in rivista) (literal)
Anno
  • 2011-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1017/jfm.2011.150 (literal)
Alternative label
  • Felli, M. [ 1 ] ; Camussi, R. [ 2 ] ; Di Felice, F. [ 1 ] (2011)
    Mechanisms of evolution of the propeller wake in the transition and far fields
    in Journal of fluid mechanics (Print); Cambridge University Press, Cambridge (Regno Unito)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Felli, M. [ 1 ] ; Camussi, R. [ 2 ] ; Di Felice, F. [ 1 ] (literal)
Pagina inizio
  • 5 (literal)
Pagina fine
  • 53 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://journals.cambridge.org/action/displayAbstract?fromPage=online&aid=8352168 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 682 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • [ 1 ] CNR INSEAN, I-00128 Rome, Italy ; [ 2 ] Univ Roma Tre, Dipartimento Ingn Meccan & Ind, I-00146 Rome, Italy (literal)
Titolo
  • Mechanisms of evolution of the propeller wake in the transition and far fields (literal)
Abstract
  • In the present study the mechanisms of evolution of propeller tip and hub vortices in the transitional region and the far field are investigated experimentally. The experiments involved detailed time-resolved visualizations and velocimetry measurements and were aimed at examining the effect of the spiral-to-spiral distance on the mechanisms of wake evolution and instability transition. In this regard, three propellers having the same blade geometry but different number of blades were considered. The study outlined dependence of the wake instability on the spiral-to-spiral distance and, in particular, a streamwise displacement of the transition region at the increasing inter-spiral distance. Furthermore, a multi-step grouping mechanism among tip vortices was highlighted and discussed. It is shown that such a phenomenon is driven by the mutual inductance between adjacent spirals whose characteristics change by changing the number of blades. (literal)
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