Sloshing Simulations With The Smoothed Particle Hydrodynamics Sph Method PDF Download

As a branch of CFD, Meshless method called 'Smoothed Particle Hydrodynamics' (SPH) has the advantage to deal with complicated free surface flows and some other attractive features. In this thesis, a robust, accurate and efficient SPH code was developed to simulate the 3D nonlinear free surface flows. MPI (message passing interface) was adopted for parallelization. Approximate solid ghost particles were proposed to simulate general 3D geometry on solid boundaries. Local pressure evaluation method was used to calculate response loads on structure and to simulate fully coupling motion between solid and liquid. Some other techniques were developed and adopted in our code in order to construct a more accurate and stable simulation. For verification and validation of SPH method, one-phase and two-phase dam break and wedge entry were tested with discussion of solid boundary, pressure evaluation method and variable smoothed length. Subsequently, the method was used to study 2D and 3D sloshing and flooding problems. Comparisons were carried out between experimental and other numerical results. The features of the phenomenon for instance in terms of wave height, structural loads and large deformation of free surface were analyzed and discussed. Key words: SPH (Smoothed Particle Hydrodynamics), three dimension, nonlinear, free surface, sloshing, flooding.