三体船斜航流场与操纵性位置导数面元法分析

以三体船操纵运动水动力预报为背景，采用势流理论有升力三维面元计算方法，计算分析了不计兴波斜航下三体船的操纵运动水动力导数．计算得到了三体船不同侧体位置布局下斜航运动时的船体表面压力分布、横向力以及转首力矩等数据．根据计算结果，分析三体船侧体位置布局对主体附近流场和受力的影响情况，以及侧体布局对三体船操纵性水动力、操纵运动特性的影响．研究结果表明片体布局对三体船流场分布、横向力和转首力矩有重要影响．

Analysis of flow field and manoeuvering position of trimarans with drift-angle by panel method

The prediction of trimaran′s manoeuvering hydrodynamics was used as the research background,and the trimaran′s manoeuvering hydrodynamic derivatives under wave-free condition was calculated and analyzed using the method of the three-dimensional panel method of potential flow with lift.The press distribution,lateral force,and yawing moment,etc.,of trimaran with different outriggers′ arrangements were calculated when trimaran sails with drift-angle.From the calculation results,the outrigger position influences the hydrodynamic derivatives,motion performance,flow field,etc.,of the trimaran maneuverability motion was analyzed systematically.The research results show that the outriggers′ displacement attaches importance to flow field distribution,lateral force,and yawing moment of trimaran.