带可控鳍的小水线面双体船在纵浪中的运动仿真

The Simulation of SWATH Ship Motion with Controllable Fin in Longitudinal Waves

在过去的研究中,人们利用切片理论和频域分析来预报SWATH船在波浪中的自由运动,而近来有学者提出了一种时域仿真方法来评价带固定鳍或可控鳍的SWATH船在规则波中的运动响应,同时也提出了一些能增加SWATH船运动预报准确性的改进方法(如考虑了涌浪效应和非线性粘性效应的方法)和若干个转鳍的控制方法,并通过对理论分析结果与在NCKU-DNAME拖曳水池中进行的模型试验结果进行对比分析来验证其正确性.比较表明,此方法可以很好地应用于对带固定鳍的SWATH船运动的时域仿真预报.文章整理编译了相关文献,为指导规则波中SWATH船的设计,特别是有固定或可控鳍影响的情况下的SWATH船的设计,做出了一些有价值的贡献,也为进一步研究不规则波下的情况打下了良好的基础.

In the previous studies the authors used the strip theory and frequency domain analysis to predict the motion of a SWATH ship moving freely in waves.Recently, some papers offer a time simulation technique to evaluate the motion response of a SWATH ship with either fixed or controllable fin, in regular waves.Some improved techniques which are helpful for predicting SWATH ship motion more accurately are also taken into consideration, e.g.the surge effect and the nonlinear viscous effect.Several fin-controlled methods are also proposed.The validity of the theoretical prediction is checked by correlation with the model experiments carried out in the NCKU-DNAME-towing tank.The comparisons show that the present technique can well be applied to predict the time Simulation of SWATH ship motion with fixed fin.We translate correlative papers and may offer some valuable contributions on the SWATH ship design in regular sea especially with the fixed or controllable fin effect and can be a good basis for future studies in irregular waves.