Hydrodynamic Analysis of Non-Planing and Planing Hulls by BEM


Department of Marine Technology,Amirkabir University of Technology


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.