2024 Volume 80 Issue 17 Article ID: 24-17187
Flume-type anti-oscillation tanks have been proposed to mitigate the wave-induced motion of a towed floating caisson. The effectiveness of such anti-oscillation tanks has been investigated through hydraulic model experiments, field experiments, and numerical analysis requiring the input of physical parameters. In this study, a model that can compute complex behavior of free water in the tank and does not require physical parameters for a floating caisson was developed using the open-source software OpenFOAM and applied to existing hydraulic model experiments. From a comparison with experimental results, the predictive capability of the model was demonstrated in terms of natural periods and amplitudes of the heave and pitch of the caisson. Furthermore, it was found that the anti-oscillation moment induced by the motion of free water in the tank was mainly affected by the pressure acting on the bottom of the tank. This study suggested the usefulness of the developed model in assessing the effectiveness of anti-oscillation tanks.
