Radiation and Diffraction Velocity Potentials for Multi-hulled Vessels in 2-D

The blended approach has the potential to provide the engineering solutions for design optimization keeping in view the current demand of the extensive computer resources for fully nonlinear computations. This study investigates two-dimensional boundary value problem for multi-bodies radiation and diffraction velocity of multi-hulled vessels using blended method. In blended scheme, fully nonlinear Euler equations of motion are solved with nonlinear hydrodynamic forces acting on multi-hulled vessels. Lid is employed over the body segment to suppress the eigenvalue mode, thus eliminating singularities in source strength being used on multi-hull bodies presenting geometrical discontinuities. Comparison between the blended technique and its validation against analytical calculations and experimental work are presented and found in good agreement. It is concluded that blended technique is an efficient and accurate alternate method to provide time simulations of ship motion and other essential parameters for design optimization.