高速三体船阻力性能研究

An investigation on the resistance of high speed trimarans

对中体和侧体均为Wigley船型的高速三体船模在Fr=0.1～0.8时3个横向偏距、5个纵向偏距共15个状态进行了阻力试验,将高速三体船线性兴波阻力理论计算结果与模型试验结果进行了比较,并据模型试验结果分析了横向偏距和纵向偏距对兴波阻力系数的影响,其中各状态的形状因子(1+K)按普鲁哈斯卡法确定,对形状因子与偏距的关系也进行了探讨。

The resistance of the high speed trimaran model with Wigley form center hull and outer hulls was tested in the Froude number between 0.1 and 0.8,and the model tests were carried out in 15 states which were configured by 3 transverse positions and by 5 longitudinal positions. The wave resistance of the high speed trimaran model is calculated by the linear wave resistance theory in comparison with the model test results. The influence of the transverse position and longitudinal position to the wave resistance coefficient is analyzed according to the model test results,where the form factor （1＋K） is determined by the Prohaska method. The relationship between the form factor and the outer piece hull Dosition is also discussed.