Research Information System
HSMV 2020 - Symposium on High Speed Marine Vehicles, Naples, Italy, 15 - 16 October 2020, pp.99-108
The increasing demands in high-speed transportation have brought the
multi-hull forms into the forefront. Many applications have already been realized in
civil transportation and naval purposes. The design features and performance
characteristics of these vessels differ from mono-hull due to the wave interference
phenomenon. Nowadays, evaluation of ship hydrodynamics with CFD has become
very popular and successful results have been achieved. Based on this, it is aimed to
contribute to the prediction of wave interference effects of a trimaran surface
combatant, advancing in deep, unbounded and calm water, by applying the CFD
method. A trimaran model with a scale of 1/125 was chosen for the numerical
investigation. Primarily, a V&V study was conducted by using proper techniques.
Then, the form factor of the trimaran was calculated with two different methods:
Prohaska and double-body. The hydrodynamic analyses were performed under
incompressible, viscous and fully turbulent flow conditions. Computational results
were compared in terms of resistance components and interference factors. The form
factor prediction methods were discussed regarding wave interference.