ムーンプールを有するポンツーン型浮体の動揺低減効果に関する基礎的研究

抄録

This study describes mechanism of motion reduction effects of a pontoon type floating structure with moonpools. Characteristics of hydrodynamic forces, and motion responses of such as the floating body were clarified by model experiments and linear potential theory based calculations. Forced oscillation tests of heave and model fixed tests were carried out using a 1/100 scaled experimental model. As a result, the forced oscillation tests found negative added-mass and almost wave-less frequency in wide frequency range were found. At the same time wave exciting forces on heave and pitch were reduced very much in wide frequency range. The prediction method reproduced behaviors of hydrodynamic forces and motion responses except peak frequencies due to resonance of water within the moonpools.