Hydrodynamic Analysis of Non-Planing and Planing Hulls by BEM

A three-dimensional, potential-based Boundary Element Method (BEM) is developed for the hydrodynamic analysis of non-planing and planing hulls in steady conditions. The method uses constant-strength doublet and source distributions over the body surface and source distributions on the free surface. Numerical computations are rst applied to analyze the hydrodynamic characteristics and the free surface waves are generated by the mathematical non-planing model (Wigley hull), which is well known in ship hydrodynamics. The second type is a planing model, namely 4666, the experimental data of which were carried out by Clement and Blount [1]. Some numerical results of wave elevation, pressure distribution, lift and resistance are presented. Validations show that the computed results are in good agreement with experimental data and other numerical approaches.