水产学报2024，Vol.48Issue(12)：95-105,11.DOI:10.11964/jfc.20231214275
基于模型实验的自升式网箱的水动力性能
Hydrodynamic performance of self-elevating cage based on model test
摘要
Abstract
Deep sea cages are an important part of fishery equipment and play an important role in modern fishery.A self-elevating cage is a special form of a deep-sea cage.In actual production,it can quickly sink to a deeper posi-tion below the water surface by various means when a typhoon or red tide comes so as to resist the adverse effects of complex sea conditions.This study carried out the hydrodynamic performance of the self-elevating cage and its supporting system to explore the hydrodynamic factors affecting the self-elevating cage,optimize and improve the cage structure,reduce the loss of cultured fish in extreme working environments,and improve the safety of the cage system.In this study,the effects of different flow rates,different inflow angles,different dive depths,and dif-ferent types of netting on the stress of steel structure self-elevating cages were investigated through physical model experiments.The results showed that when the mesh size,the diving depth,and the inflow angle were the same,the overall force of the self-elevating cage was positively correlated with the water flow velocity.When the cage was perpendicular to the water flow direction,the force of the cage was the smallest,and the inflow angle of the cage might be subjected to the maximum impact force at 30°-60°.The force of the model cage at 50 cm from the water bottom was greater than that of the cage at 80 cm from the water bottom.The stress of UHMWPE netting was larger than that of PET netting with the same line area.The results showed that the hexagonal mesh PET net could be preferred in the cage design,and the attachment could increase the force of the net to more than 10 times the original.It was suggested that the influence of the attachment on the structural strength of the cage should be fully considered in the design of the cage structure.This study can provide a reference for the design,layout,and netting selection of self-elevating cages.As a kind of deep-sea aquaculture equipment,the prospect of a self-elev-ating cage is extensive,but the related work has a long way to go.关键词
深远海养殖/自升式网箱/水动力/模型实验/UHMWPE网衣/六角形网目PET网衣/附着物Key words
deep-sea aquaculture/self-elevating cage/hydrodynamic/model test/UHMWPE netting/hexagonal mesh PET net/attachments分类
农业科技引用本文复制引用
李亚婕,石建高,徐俊杰,张凤仪,吕昌麟,王淑婷,张文阳,张健,冯晓军..基于模型实验的自升式网箱的水动力性能[J].水产学报,2024,48(12):95-105,11.基金项目
国家自然科学基金青年基金(32203000) （32203000）
国家自然科学基金(31972844) （31972844）
企业委托项目——生态型可降解人工集鱼装置(FAD)的研究 （FAD）
企业委托项目——波纹龙虾吊笼养殖技术研发及应用示范 Youth Fund of National Natural Science Foundation of China(32203000) （32203000）
National Natural Science Foundation of China(31972844) （31972844）
Project Commissioned by Enterprise-Research on Ecological Degrad-able Artificial Fish Collecting Device(FAD) （FAD）
Project Commissioned by Enterprise-Research and Application Demonstration of Panulirus homarus Hanging Cage Aquaculture Technology （）
