The Effect of Velocity and Between Two Mono Hull Distance on Wave Making in Catamaran Ship

This study presents a potential-based boundary element method for solving a nonlinear free-surface flow problem for a Wigley catamaran moving with a uniform speed in deep water. Since the interior flow of each mono hull of the catamaran is different from the exterior flow، both mono hulls must be considered as lifting bodies. The effects of wave interference and hull separation on the hydrodynamic characteristics of the catamaran hull are analyzed and the validity of the computer scheme is examined by comparing the wave resistance and wave profiles with the numerical results of others. The present method could be a useful design tool for screening the suitable combinations of hull parameters and hull spacing at the preliminary design stage of catamaran hull. However، the results of this thesis can be directly utilized in design، in order to minimize ship resistance، and maximize available payload. The purpose of the present study is to develop a potential-based panel method for determining the steady potential flow about three dimensional Catamaran and also investigate the effects of side hull position on the wave making resistance characteristics of powered catamaran. The all calculations were wroten by a three dimensional، Rankine panel code in matlab software.