三体船侧体位置优化设计研究

基于二维半理论的计算软件TRIMARAN研究了侧体纵向、横向位置的变化对三体船运动响应的影响,同时研究了船体横摇惯性半径对三体船横摇性能的影响,从而提出一套三体船侧体位置优化方案。通过在低速和高速两种情况下,对三体船侧体纵向、横向位置的变化对三体船的运动响应分析,可以看出:低航速下侧体应布置于靠近主体船艏的位置,有利于三体船运动性能的提升,高航速下则应将侧体放置于主体船尾。同时,根据横摇惯性半径对三体船横摇性能的影响研究表明:三体船的横摇半径越小越能增加三体船的横摇稳定性。

Optimization design on the side-hull location of trimaran

The response of trimaran to the change of the vertical and horizontal position of the side-hull is researched by TRIMARAN which is based on 2.5D potential theory.The influence of the hull roll radius on the rolling performance of the trimaran is also studied to propose a set of schemes for the optimization of the side-hull location.The analysis of the results under low-speed and high-speed condition shows that the side-hull should be located close to stem under the low-speed condition in order to improve movement capability of trimaran,while close to stern under the high-speed condition.From the research on trimaran rolling performance influenced by the hull roll radius,it is shown that the smaller of roll radius,the better of roll stability.