Abstract
A simple method is developed to consider the energy loss (dissipation) in the sloshing flow in a liquid tank by adding “artificial damping” in a potential flow model to better predict the sloshing effects (force/moment) on the tank near the resonance. The consistency of the mechanism of the way the “artificial damping” is introduced to the potential flow model is discussed. The rate of the energy loss (or energy absorption from the flow) is reflected by the damping coefficients. The damping coefficient will primarily be determined by comparing the numerical results to the measurement of physical tests at resonance frequency. The sensitivity of the damping coefficients to the other excitation frequency will also be examined.