摘要
作为渔业转型升级和绿色发展的重要方向,养殖工船受到学术界和工业界的广泛关注。传统的多点系泊方式会导致鱼类生长环境较为恶劣,不利于其生长,因此养殖工船普遍采用单点系泊方式,但是现有研究主要关注其系泊方案优化和性能研究,对养殖工船单点系泊装置的设计研究较为罕见。基于尽可能减少改造主船体的要求,首先设计了某型养殖工船的外转塔单点系泊装置,详细阐述了系泊系统转塔装置、系泊装置、桁架结构、轴承装置等主要结构的工作原理。然后,采用三维势流理论结合水动力计算软件AQWA对养殖工船进行了水动力系数计算。最后,依据规范对风、浪、流的方向进行组合,采用船舶-系泊时域耦合动态算法对养殖工船及其单点系泊系统进行计算,得到了系泊完整作业和完整自存工况下的系泊缆张力、船舶六自由度运动。研究发现,风浪流非同向时养殖工船会产生较大的艏摇、横荡和横摇运动,其值仍在合理范围内;在作业和生存工况下系泊缆张力是合理安全的,因此所设计的单点系泊系统具有良好的定位能力。
Recently,the vessel-shaped aquacultural farm has received much attention from the academia and industry because of its importance in promotion and sustainability of marine fishery.Polluted surroundings unsuitable for fish growth are always introduced by traditional multiple point mooring system.Therefore,single point mooring system is more suitable for the aquacultural farm.In recent years,mooring scheme optimization and performance assessment was frequently investigated in most existing literature,while studies on design of the single point mooring system are rare.Based on the requirement of reducing hull reconstruction,an external turret single point mooring system was proposed,which is composed of the turret device,the mooring anchor,the truss structure and the bearings.And their working principle were also clearly illustrated.Then,three dimensional potential theory was applied to obtain the hydrodynamic coefficients of the ship by use of the software AQWA.Finally,in order to verify the positioning ability of the mooring system under both operational and survival conditions,the direction of wind,wave and current was combined according to the rules,and time-domain coupling analysis of the farm-mooring system was carried out.From the numerical results,it can be seen that yaw,relatively large sway and roll motions will be induced due to different direction of the wind,current and wave.The mooring line tension is adequate and safe under all conditions,indicating that this proposed single point mooring system exhibits good positioning performance.
作者
郭宇
程世明
李阳
刘晓雷
GUO Yu;CHENG Shi-ming;LI Yang;LIU Xiao-lei(708 Research Institute,Marine Design&Research Institute of China,Shanghai 200011,China;College of Ocean Science and Engineering,Shanghai Maritime University,Shanghai 201306,China)
出处
《科学技术与工程》
北大核心
2025年第13期5351-5358,共8页
Science Technology and Engineering
基金
国家工信部高技术船舶科研项目(MC-202015-H02)。
关键词
养殖工船
外转塔单点系泊装置
系泊缆张力
定位能力
设计
vessel-shaped aquacultural farm
external turret single point mooring device
mooring line tension
positioning capability
design
