Numerical assessment of interference resistance for a series 60 catamaran

Farkas, Andrea and Degiuli, Nastia and Martić, Ivana (2017) Numerical assessment of interference resistance for a series 60 catamaran. = Numerical assessment of interference resistance for a series 60 catamaran. In: VII International Conference on Computational Methods in Marine Engineering MARINE 2017, 15-17.05.2017., Nantes, Francuska.

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An important consideration in the catamaran design is the distance between the hulls. Arrangement of the hulls in catamaran configuration can have strong influence on the wave making resistance and thus on the total resistance of a catamaran. The hydrodynamic interaction between hulls becomes significant when spacing between hulls is sufficiently small. In this paper, numerical simulations of viscous flow around monohull and catamaran model are performed utilizing commercial software package STAR-CCM+, in order to investigate the influence of spacing between hulls on the interference resistance. A mathematical model based on Reynolds Avaraged Navier-Stokes (RANS) equations, k-ε turbulence model and Volume of Fluid (VOF) method for describing the motion of two-phase media are briefly described. Numerical simulations are performed for Series 60 monohull and two catamaran configurations with CB=0.6 for different values of Froude number. Results of performed numerical simulations are compared with experimental results available in the literature and satisfactory agreement has been achieved. It has been shown that CFD is a very useful tool in preliminary catamaran design.

Item Type: Conference or Workshop Item (Lecture)
Keywords (Croatian): Computational Fluid Dynamics (CFD), Volume of Fluid (VOF), k-ε turbulence model, interference resistance
Subjects: TECHNICAL SCIENCE > Shipbuilding
Divisions: 600 Department of Naval Engineering and Marine Technology > 610 Chair of Hydromechanics of Marine Structures
Indexed in Web of Science: No
Indexed in Current Contents: No
Date Deposited: 02 Oct 2017 15:14
Last Modified: 02 Oct 2017 15:14

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