Numerical and experimental investigation of sloshing phenomena in conditions of low filling ratios

A numerical model and experiments have been used to study some features of the flow developing in tanks forced to move with harmonic motion. Attention has been focused on the conditions of low filling ratios. In this case, non-linearities are easily developed, and their features are strongly dependent on the following parameters: amplitude, frequency of oscillation and filling height. Here the parameters are chosen so to cause the occurrence of bore: Ondular bore and, critical cases, breaking bores will be shown. The modelling of these features requires a robust and accurate numerical solver, the Smoothed Particle Hydrodynamics (SPH) has proved its ability to model them. Direct comparison are performed with the experiments.