Dampers Influence on Sloshing Mitigation in Fuel Tanks of Launch Vehicles and Reservoirs

Abstract

The main objective of this paper is elaborating effective numerical methods for analyzing influence of different devices installation to mitigate liquid vibrations in partially filled rigid reservoirs. The cylindrical shells with horizontal and vertical baffles are considered as fuel tanks models. The baffles are installed for sloshing mitigation that is especially topical to ensure stability of launch vehicles. The floating cover is also analyzed as sloshing damper. Reduced boundary element method is involved into numerical simulation as well as mode superposition technique. Vibration modes, obtained at solving spectral problems are used onwards as basic functions in series for an unknown potential and a free surface elevation. The effective new method for calculating the one-dimensional singular integrals is used. The novelty of the proposed approach consists in analyzing the different devices efficiency on sloshing mitigation under harmonical loadings. Next stage of the research will be devoted to studying dampers efficiency under impulse and seismic loads.