Trimaran has become popular in recent years,due to its rapidity,high efficiency and good stability.In order to reduce the influence of pitch and heave motions induced by the two lateral elements on the trimaran motions,11 working conditions are considered for model simulation of the fails which are placed at 4 longitudinal positions of the ship bottom with 4 attacking angles and 3 distances to the ship bottom.In addition,6 working conditions are analyzed by installing flaps with 3 chord and 3 kinds of angle in the stern of the main body.By comparing the hydrodynamic performances of the trimaran,the better installation location of T-fail and the best chord and angle of flaps are obtained.%三体船由于其快速性好、效率高、稳定性优良而备受青睐.为了减小由于侧体存在带来的纵摇和垂荡对船体运动性能的影响,在船底部四个位置安装三种水平翼距船底基线高度以及四种翼面迎流攻角共11种工况进行模型仿真;在主体船尾安装三种弦长、三种下反角共六种工况的压浪板.经研究,通过比较安装两种减摇附体前后三体船的水动力性能,得到T型翼较佳的安装位置和迎流攻角以及压浪板的最佳弦长和下反角.
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