A Numerical and Experimental Study on the Hydrodynamic of a Catamaran Varying the Demihull Separation (Contributo in atti di convegno)

Type
Label
  • A Numerical and Experimental Study on the Hydrodynamic of a Catamaran Varying the Demihull Separation (Contributo in atti di convegno) (literal)
Anno
  • 2011-01-01T00:00:00+01:00 (literal)
Alternative label
  • Zaghi, S. , Broglia, R., Di Mascio, A., (2011)
    A Numerical and Experimental Study on the Hydrodynamic of a Catamaran Varying the Demihull Separation
    in IV International Conference on Computational Methods in Marine Engineering (MARINE 2011), Lisbon (Portugal), 26-30 Settembre 2011
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Zaghi, S. , Broglia, R., Di Mascio, A., (literal)
Pagina inizio
  • 1 (literal)
Pagina fine
  • 12 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#altreInformazioni
  • Progetto: \"Complementary EFD and CFD Analysis of Calm Water Hydrodynamics and Large Amplitude Motion for High-Speed Catamarans\" (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://congress.cimne.com/marine2011/frontal/doc/MARINE_11_ebook.pdf (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#titoloVolume
  • MARINE 2011 Computational Methods in Marine Engineering IV (literal)
Note
  • PuM (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • INSEAN - Roma ; CNR-IAC (literal)
Titolo
  • A Numerical and Experimental Study on the Hydrodynamic of a Catamaran Varying the Demihull Separation (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#isbn
  • 978-84-89925-79-3 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#curatoriVolume
  • L. Eça, E. Oñate, J. García, T. Kvamsdal and P. Bergan (Eds.) (literal)
Abstract
  • A complementary experimental and numerical study of the interference effect for a fast catamaran is presented. Resistance, sinkage and trim are collected by towing tank experiments for Froude number in the range from 0:2 to 0:8 for several separation distances and for the monohull. Resistance coefficient curves reveal the presence of two humps, the second one strongly depending on the separation length; high interference is observed in correspondence of the second hump. To gain a deeper insight into these behaviors, a complementary analysis is carried out by a numerical campaign; simulations are performed by means of an in-house unsteady RANS solver. Verication of numerical results is provided, together with validation, which is made by the comparison with both present and other experimental data. Agreement in terms of resistance coefficient is rather good, comparison error being always smaller than 2.2%. (literal)
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