Statistical analysis of sloshing-induced dissipative energy across a range of Froude numbers

Abstract Fuel sloshing-induced damping is currently being studied extensively within the EU-funded SLOWD project as a means of passively reducing dynamic loads in aircraft wings. It interest to be able determine which parameters have greatest influence on added from sloshing motion. An uncertainty measured force has been observed when multiple consecutive and identical oscillation cycles are considered sinusoidal excitation experiments, leading variations energy dissipation. This current work considers liquid undergoing vertical motions for different fill level conditions (frequency amplitude) dissipation via several possible physical mechanisms. The experimentally across large number each amplitude, expressed form Froude (Fr) numbers. Depending Fr number, distinct mechanisms dominate dissipative effects induce particular variance analysed. variation quantified correlated with depending helping explain various non-stationary that even well-controlled experimental conditions. As well improving insights into inherent dispersion nature phenomena, this research also establishes characteristics suitable future model validation calibration.