The Numerical Model With Smoothed Particle Hydrodynamics

Smooth particle hydrodynamics - SPH (Smoothed ParticleHydrodynamics) method as a form of pure Lagrangian mesh-free particlemethod, is compared with finite element method ,which based on meshmethod, without consider the difficulties of divide mesh and the. Mutationof mesh. And it can easily handle large deformation with the fluid surfaceand multi-connected region of fluid flow problems.The basic idea of SPH method is the computational region representedby a series of particles, which have independent physical information. Inthis paper, through the particle approximation obtained the Navier-Stokesequations in SPH form, and established the hydrodynamic model.Introduced numerical technologies such as artificial viscosity, artificialcompression ratio, boundary treatment, particle search method, timeintegration, etc.Through the hydrodynamic model to test the collapse of a water columnand surge, the results conform with the realistic. And simulate the complexof flow -induced floating body motions. Analyzed the results and discussedthe relevant aspects of SPH in the future.