桁架与板架混合结构形式养殖船水动力特性频域分析  

Frequency domain analysis of hydrodynamic characteristics of mariculture ship with truss and plate frame hybrid structure

作　　者：王绍敏[1] 袁太平 杨谢秋[1] 陶启友[1] 谌伟[2] 胡昱[1] 黄小华[1] WANG Shaomin;YUAN Taiping;YANG Xieqiu;TAO Qiyou;SHEN Wei;HU Yu;HUANG Xiaohua(South China Sea Fisheries Research Institute,Chinese Academy of Fishery Sciences/Key Laboratory of Open-Sea Fishery Deve-lopment,Ministry of Agriculture and Rural Affairs/Guangdong Cage Engineering Research Center,Guangzhou 510300,China;School of Transportation,Wuhan University of Technology,Wuhan 430063,China)

机构地区：[1]中国水产科学研究院南海水产研究所/农业农村部外海渔业开发重点实验室/广东省网箱工程技术研究中心,广东广州510300 [2]武汉理工大学交通学院,湖北武汉430063

出　　处：《南方水产科学》2021年第4期82-90,共9页South China Fisheries Science

基　　金：国家重点研发计划项目(2019YFD0900903);国家自然科学基金项目(31772897);海洋经济创新发展区域示范专项(Bhsfs012);广东省现代农业产业技术体系创新团队建设专项资金;中国水产科学研究院中央级公益性科研院所基本科研业务费专项资金资助(2020TD77);中国水产科学研究院南海水产研究所中央级公益性科研院所基本科研业务费专项资金资助(2021SD10)。

摘　　要：为了研究由桁架结构和多个板架结构浮体构成的养殖船的水动力性能及运动响应特性,文章基于三维势流理论结合Morison方程对养殖船的水动力特性进行了频域计算,获得了养殖船的水动力参数和运动响应,据此完成了分析。结果表明,养殖船附加质量、辐射阻尼对频率的变化较为敏感,敏感程度在养殖船各方向运动上明显不同;且摇动运动的附加质量和辐射阻尼大于平动运动,均与养殖船结构形状有密切关系;在各向入射波的作用下,养殖船的一阶波浪力随频率的增加呈现先增大后减小的趋势,位于高频段的养殖船在不同方向入射波作用下的一阶波浪力曲线趋于稳定,在中低段则出现了较大差异;在高频与低频激励作用下,养殖船的运动响应均较小,但在中短周期规则波中运动时产生共振,随浪或迎浪时养殖船的纵荡、纵摇为主要运动模态,在横浪时养殖船的横摇和垂荡为主要运动模态。In order to study the hydrodynamic performance and motion amplitude response characteristics of the mariculture ship composed of truss structure and several floating bodies with plate and frame structures,we calculated the hydrodynamic characteristics of the ship in frequency domain based on the three-dimensional potential flow theory and Morison equation.Then we obtained and analyzed the hydrodynamic parameters and motion response of the mariculture ship.The results show that the additional mass and radiation damping of the mariculture ship were sensitive to the change of frequency,and the sensitivity was obviously different in the movement of the mariculture ship in different directions,and the additional mass and radiation damping of the three rotations were larger than those of the translations,which were both closely related to the structural shape of the mariculture ship.Under the action of incident waves in every direction,the first-order wave force of the mariculture ship increased at first and then decreased with the increase of frequency,and the first-order wave force curve tended to be stable in the high frequency section under the action of incident waves in different directions.However,there was a big difference in the middle and low section.Under the action of high-frequency and low-frequency excitation,the motion response of the mariculture ship was small,but the resonance occurred when it moved in the medium and short period regular waves.The surging and pitching were the main motion modes when ship was with fol-low wave or head wave condition,and roll and heave motions were the main motion modes in bean wave.

关 键 词：养殖船 桁架与板架混合结构 水动力性能 运动响应 势流理论 Morison方程 

分 类 号：U661.32[交通运输工程—船舶及航道工程]