Study of the influence of the vessel stern shape on its hydrodynamic characteristics

Determining the main dimensions of small vessels while designing is an important and difficult task due to large number mutually exclusive factors affecting hydrodynamic characteristics such vessels. The existing patterns for determining length, width draft are quite general. This complicates their usage vessel a specific design. In this case, it necessary check technical solutions, one ways that may be implied computational fluid dynamics (CFD) methods. paper presents results numerical simulation boat movement in transient mode with Froude numbers up 1.2. process preparation modeling aerodynamics composite wing NUMECA/FineMarineTM software package described, choice turbulence model parameters grid, including resolution boundary layer, justified. study influence three variants shape aft tip on change draft, trim angle, wetted surface resistance carried out. An increase flat planing part has favorable effect vessel, even when moving transition at L/B from 3.5 3.99. At same time, use extension underwater requires more detailed study.