中国水产科学2025，Vol.32Issue(3)：396-408,13.DOI:10.12264/JFSC2024-0246
波流联合作用下升降式养殖网箱水动力特性
Hydrodynamic characteristics of a submersible cage in waves and currents
摘要
Abstract
In this study,a composite cage that integrates many modules,such as a steel frame structure,dive system,energy,and monitoring system,is proposed.It is necessary to conduct hydrodynamic numerical simulation tests to understand the capability to resist waves and currents and ensure the long-term safe and coordinated operation of each system.First,the wave force acting on the cage is calculated based on the potential flow theory.Then,using the motion equation to solve the dynamic response of the cage,a numerical model is constructed to study the potential of the cage under extreme sea conditions.The results indicate that:The dynamic response of the cage in the floating and submerged states is significantly correlated with the wave parameters.The tension of the anchor rope on the upstream side is always greater than that on the downstream side,and the anchor rope tension is positively correlated with the wave height and period in both states.The heave,surge,and pitch are all positively correlated with wave height in both states;it is positively correlated with the period when floating,but has no obvious correlation with the period when sinking.Surge is positively correlated with the period in both states,whereas the pitch is negatively correlated with the period when floating and positively correlated with it period when sinking.The dynamic responses of the cage in the floating and submerged states were significantly correlated with the current velocity.The tension of the anchor rope increases with the increase in flow speed in both states.When the cage is in the floating state,the pitch is positively correlated with the flow speed,the heave is negatively correlated with the flow speed,and there is no obvious correlation between the pitch and the flow speed.The overall variation amplitude of the surge and pitch is between-13％and 20％,and the average variation amplitude does not exceed 7％.When the cage is in the floating state,the maximum heave,surge,and pitch values were 0.549 m,1.055 m,and 7.116°,respectively.After the cage was submerged,the anchor rope tension,heave,surge,and pitch decreased.The amplitudes were 59％,70％,57％,and 49％,respectively,indicating that the cage has a good capability to resist waves and currents.These results have practical significance for improving the safety and efficiency of submersible cage work.关键词
升降式网箱/波流联合/锚绳张力/运动响应/数值模拟/深远海养殖Key words
submersible cage/wave-current combination/anchor rope tension/motion response/numerical simulation/deep sea aquaculture分类
农业科技引用本文复制引用
李潇冉,崔勇,关长涛,王刚,吴锦涛,郭一诺..波流联合作用下升降式养殖网箱水动力特性[J].中国水产科学,2025,32(3):396-408,13.基金项目
崂山实验室"十四五"重大项目(2022QNLM030001-4) （2022QNLM030001-4）
现代农业产业技术体系(CARS-47-22) （CARS-47-22）
中国科协第九届青年托举工程项目(2023QNRC001). （2023QNRC001）
