Numerical investigation on the liquid sloshing damping inside a tank with a flexible Anti-Sloshing Device

In this study, a numerical investigation, through a fluid-structure-interaction (FSI) approach, of the behavior of the lateral liquid sloshing inside a tank with a flexible anti-sloshing device (ASD), under normal gravity, is presented. The considered geometry is a rectangular tank, partially filled with water, and equipped with two ASDs on the lateral walls. A partitioned two-way FSI procedure is developed, and used to carry out a parametric analysis to investigate the influence of the ASDs’ flexibility on the liquid motion damping. The results show that, increasing the ASD’s flexibility, it is possible to raise the damping ratio with respect to the one obtained with a rigid device, allowing to design lighter baffles for a required level of damping.