Smoothed particle hydrodynamics (SPH) is tested for simulating flow driven by high speed underwater body (FDUB).Developing history of supercavity induced by a body is predicated by SPH.Shape of developed supercavity derived by SPH is compared with result given by principle of independence of cavity sections expansion of Logvinovich.Ghost particle method and Dummy particle method,that remedy boundary deficiency of SPH,are combined to implement wall conditions.

We propose a method for data-visualization of smoothed particle hydrodynamics(SPH).Data calculated with SPH on convex or non convex continuum domain are processed.Particle set is discretized into a set of triangular elements by Delaunay triangulation,and only those elements on which nodes interact with each other are kept.With kept elements and data on their nodes a finite element interpolation is employed to derive values on interior points of the elements.A free surface is easily extracted with the method.Feasibility of the method is tested.Methods dealing with walls,severe particle splashing or multi-materials are provided,respectively.They supply feasible ways for realizing a general post-processing software package for SPH and even for gridless methods.