SPH METHOD IN HYDRAULIC PROBLEMS
Smoothed Particle Hydrodynamics (SPH) method is a meshless
numerical method, which has many advantages comparatively with Finite
Element Method (FEM), regarding those problems where large displacement,
strong nonlinearities or deformations with high strain rates occur (high velocity
impact problems, air or underwater explosion calculus etc.). As fluid mechanics
is concerned, this method is practically completely validated. Some very difficult
problems, like fluid-structure interaction (FSI), free surface evolution of a fluid
and others, can be easier solved by SPH method. In our country this numerical
method is practically unused and even unknown. This paper comes firstly with
theoretical fundamentals of the SPH method, after that an hypothetical
hydraulic problem is solved. It is about the numerical modeling of a gate which
controls the fluid level between two enclosed spaces. In addition to urging the
use of SPH method, this paper presents an available numerical model, based
on this method, for many others similar problems and useful conclusions.
Keywords: free particles, SPH, Navier -Stokes, flowing, fluid
Cuvinte cheie: particule libere, SPH, ecuaţiile Navier-Stokes, curgere,
fluid
