Performance Computation of Planing Trimaran Tunneled Boat Using Numerical Simulation

By regarding expensive towing tank experiments and inavailability of appropriate towing carriage for high speed craft, implementation of various software for numerical simulation are intensified. The main purpose of numerical simulation is to achieve a suitable answer in a low expense, good accuracy and reasonable solution in a short time. Therefore, in the current study, numerical simulation of planing trimaran tunneled boat is performed using commercial software STARCCM and resistance, ship waves and pressure distribution on boat’s hull are analyzed. The final results are presented by comparison of numerical data against experimental results and free surface flows around tunneled boat are illustrated. Pressure distributions over the hull bottom at wide range of Froude number from 1.07 up to 8.4 are also presented and variation of waterlines is considered. Obtained results by numerical simulation have a good accuracy in comparison with experimental data.