摘要
通过物理模型试验研究了周长40 m、网高7 m的HDPE圆形潜降式网箱在波浪作用下的锚绳受力与运动特性,探究浮绳框深度和浮球体积对网箱水动力特性的影响。试验采用双尺度模型相似准则,网箱采用水下网格式锚泊系统。波浪周期范围1.0~1.8 s,波高范围6~18 cm。结果表明:增大浮绳框深度或浮球体积,锚绳受力的总体趋势都随之增大。漂浮状态下,当浮绳框深度增大时,网箱垂荡值减小,网箱纵荡值增大而网箱纵摇值变化较小;当浮球体积增大时,网箱垂荡运动和纵摇运动无明显变化,网箱纵荡值增大。下潜状态下,当浮绳框深度增大时,网箱垂荡运动无明显变化,网箱纵荡值减小而网箱纵摇值增大;增大浮球体积对网箱垂荡运动无明显影响,但网箱纵荡和纵摇运动值增大。研究结果可为潜降式网箱锚泊系统研发提供理论参考。
Physical model tests were adopted to study the mooring line force and motion characteristics of HDPE circular submersible cage under wave action.The influence of the floating rope frame depth and the buoy volume on the hydrodynamic characteristics of the cage are analyzed.The cage with circumference of 40 m and netting height of 7 m was selected.And the cage adopted underwater net mooring system.The wave period ranged from 1.0 to 1.8 s,and the wave height ranged from 6 to 18 cm.The results show that the mooring line force increases on the whole with the increase of the floating rope frame depth or the buoy volume.In the floating state of the cage,when the floating rope frame depth increases,the heave motion decreases,while the surge motion increases and the pitch motion changes little.When the buoy volume increases,the heave motion and pitch motion have no obvious change,but the surge motion increases.In the submerged state of the cage,when the floating rope frame depth increases,the heave motion has no obvious change,but the surge motion decreases and the pitch motion increases.Furthermore,with the increase of the buoy volume,the heave motion has no obvious change,but the surge and pitch motion increase.The results can provide theoretical reference for the research and development of the submersible cage and mooring system.
作者
吴锦涛
崔勇
关长涛
秦升杰
WU Jin-tao;CUI Yong;GUAN Chang-tao(National Engineering Research Center for Marine Aquaculture of Zhejiang Ocean University,Zhoushan 316022;Yellow Sea Fisheries Research Institute,Chinese Academy of Fishery Sciences,Qingdao 266071,China)
出处
《浙江海洋大学学报（自然科学版）》
CAS
2022年第4期337-343,共7页
Journal of Zhejiang Ocean University：Natural Science
基金
国家重点研发计划“蓝色粮仓科技创新”重点专项(2020YFE0200100)
国家自然科学基金(31772898)
国家现代农业产业技术体系(CARS-47)
中国水产科学研究院基本科研业务费专项资金(2020TD51)。
关键词
潜降式网箱
物理模型
水动力特性
锚泊系统
submersible fish cage
physical model
hydrodynamic characteristics
mooring system
