Numerical simulation of interference effects for a high-speed catamaran |
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Authors: | Riccardo Broglia Stefano Zaghi Andrea Di Mascio |
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Institution: | (1) Istituto Nazionale per Studi ed Esperienze di Architettura Navale, CNR, via di Vallerano, 139, 00128 Rome, Italy |
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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. |
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Keywords: | |
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