Representation of Ship Hull Form using Multiblock Grid

Abstract

A method is shown to generate a surface grid on a ship hull with bow and stern bulbs and stern overhang. The hull geometry is represented by a set of offset data defined at constant x-sections. A spline net which consists of horizontal and vertical splines, is defined based on the offset data. The spline net is modified iteratively using the implicit geometrical method which imposes orthogonality, smoothing, and clustering requirements. A new reclustering method is shown, which produces grids much better than the original reclustering algorithm.