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Journal of Marine Science and Technology

, Volume 16, Issue 3, pp 254–269 | Cite as

Numerical simulation of interference effects for a high-speed catamaran

  • Riccardo BrogliaEmail author
  • Stefano Zaghi
  • Andrea Di Mascio
Original Article

Abstract

The simulations of the flow around a high-speed vessel in both catamaran and monohull configurations are carried out by the numerical solution of the Reynold averaged Navier–Stokes (RANS) equations. The goal of the analysis is the investigation of the interference phenomena between the two hulls, with focus on its dependence on the Reynolds number (Re). To this aim, numerical simulations are carried out for values of Re ranging from 106 to 108 for two different values of the Froude number (Fr = 0.30, 0.45). Wave patterns, wave profiles, limiting streamlines, surface pressure and velocity fields are analyzed; comparison is made between the catamaran and the monohull configurations. Dependence of the pressure and viscous resistance coefficients, as well as of the interference factor, on the Reynolds number is investigated. Verification and validation for both resistance coefficients and wave cuts is also performed.

Keywords

Catamaran RANS based simulations Interference Scale effects 

Notes

Acknowledgments

This research was supported by the U.S. Office of Naval research, through Dr. L. Patrick Purtell in the framework of the NICOP project “Complementary EFD and CFD Analysis of Calm Water Hydrodynamics and Large Amplitude Motion for High-Speed Catamarans”, grant N00014-08-1-1037. Numerical computations presented here have been performed on the parallel machines of CASPUR Supercomputing Center (Rome); their support is gratefully acknowledged.

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Copyright information

© JASNAOE 2011

Authors and Affiliations

  • Riccardo Broglia
    • 1
    Email author
  • Stefano Zaghi
    • 1
  • Andrea Di Mascio
    • 1
  1. 1.Istituto Nazionale per Studi ed Esperienze di Architettura Navale, CNRRomeItaly

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