Published on August 2016 | Marine Hydrodynamics, Ocean Engineering

Estimation of Hydrodynamic Forces and Motion Characteristics of a Trimaran Light Aboard Ship using Finite Element Method

The Trimaran ship design has become attractive to naval architects due to its superior sea going performance. Trimaran vessels are developed for different applications and hydrodynamic behavior of such vessels is different than usual mono hulls. Consequently, the trimaran has become a high performance vehicle type, especially in the design of high-speed commercial and naval ships. In the present work, linear diffraction- radiation theory has been used to formulate the problem and the differential equations have been solved using three-dimensional finite element method to obtain the wave loads and moments on the given vessel at zero forward speed in different sea states. Subsequently the motion characteristics have been obtained by solving the equation of motion. Solution is done by a FORTRAN program based on the theoretical and finite element formulation of the wave structure interaction problem. Computations have been performed for different wave parameters.