In this study, we conducted shaking table tests using a scaled pool model to verify sloshing. As input acceleration increased, water surface responses exhibited strong nonlinear behavior. During this process, the water surface displacements at the pool edges and the amount of water overflow to the pool sides increased. When the water surface displacements were small, the first mode frequency was almost equal to a rectangular tank. However, when the water surface displacements became large, the natural frequency could not be observed clearly. Additionally, it was confirmed that these behaviors could be reproduced through computational fluid dynamics analysis.
WATAI et al. (Thu,) studied this question.