Vertical Motion Assessment for Planing Hulls

The aim of this thesis is to develop a mathematical model and associated computational tool able to predict correctly wave induced motions and loads for planing hulls sailing in rough seas. The proposed methodology should be able to take into account the principal nonlinear effects associated with hydrodynamics of planing regime. The main objectives of the thesis are two: 1. to model principal nonlinear effects associated with motion in planing condition in large amplitude waves; 2. to ensure accurate, robust and low computational cost tool to be used in design context. The systematic series of warped planing hull developed at Department of Industrial Engineering, University of Naples, is used as benchmark. Since the aim of this thesis is to apply the proposed methodology in a practical design problem, emphasis is given to vertical motions and accelerations prediction, with objective to understand the importance and feasibility of using a 2D+t nonlinear tool to asses wave induced motions and accelerations.