A Study on the Wave Induced Responses for High Speed Hydrofoil Catamaran

研究了一种新型的具有被动式运动控制系统的高速双体船。为了减少船舱在波浪中的运动，船舱通过铰链和弹簧与双体船连接，并配备了全潜水翼。它们主要从数值计算的角度说明了一艘新船在波浪中减摇的可能性。然而，由于少量的小模型试验，数值计算的能力一直不是很清楚。本研究针对类似类型的双体船，用弹簧代替连接铰链，以获得减小的垂荡运动和纵摇运动。为了将数值计算结果与实验结果进行比较，利用一个2m长的模型在规则波和不规则波中进行了模型试验。计算结果与试验结果吻合较好，该计算方法可用于样船设计阶段的兴波性能预报。

A new type high-speed catamaran with a passive type motion control system has been studied. In order to obtain the reduced motions of cabin in waves, the cabin was connected to the twin hulls by hinges and springs and it was also equipped with the fully submerged hydrofoil. They showed the possibility of the reduced motions in waves for a new ship mainly from the numerical calculations. However, the capability of the numerical calculations had not been clear since a small number of experiments using a small model.This research is concerned with the similar type catamaran, in which the connecting hinges are replaced by springs to obtain the reduced heave motions as well as pitch motions.In order to compare the numerical results with the experimental ones, model experiments have been carried out by use of a 2m long model both in reqular and irregular waves. Fairly good agreement between the calculated and experimental results are obtained and the calculation method can be spplied to the prediction of the performance of the ship in waves in the design stage for a prototype ship.