中国水产科学2025，Vol.32Issue(8)：1186-1197,12.DOI:10.12264/JFSC2024-0385
基于现场试验的大尺寸圆形养殖池水动力特性
Hydrodynamic charicteristics of large-sized circular aquaculture tank based on field experiments
摘要
Abstract
Land-based circular tank recirculating aquaculture systems,which offer advantages such as water conservation,environmental sustainability,and low cost,are increasingly emerging as a significant trend in modern aquaculture.The hydrodynamic characteristics within the tank directly influence the accumulation of residual feed and fecal matter as well as water quality fluctuations,while the airlift water jets plays a crucial role in enhancing these conditions.A field test was conducted to investigate the hydrodynamic characteristics of a large-scale,land-based circular tank under the influence of the airlift water jets.Three deployment angles for the jet were evaluated,defined as the relative angle between the jet direction and the tank wall(θ=0°,20°,and 45°),and for each deployment angle,the number of airlift water jets was varied across seven levels(n=2,3,4,6,8,10,and 12).An acoustic Doppler velocimeter was employed to measure the velocity distribution in three distinct water depth of the tank(located at h=30 cm,60 cm,and 90 cm from the surface),and the hydrodynamic characteristics were evaluated based on the average velocity(vavg)and the tank uniformity coefficient(U).The results indicated that the configuration of the airlift water jet exerts a significant influence on the flow field and hydrodynamic properties.When 12 jets were installed at an deployment angle of 0°,a large low-velocity zone was observed at the center of the tank.As the deployment angle increased from 20° to 45°,the area of the low-velocity zone within the tank progressively decreased.At an deployment angle of 45°,the average velocity under each operating condition is 0.051 m/s,and the tank uniformity coefficient is 0.29,resulting in the most uniform flow field distribution and a markedly expanded high-velocity zone within the tank.Moreover,at an deployment angle of 45°,when the number of airlift water jets exceeded two,further variations in jet count did not produce a significant impact on the flow field distribution.In summary,the installation angle exerts a more pronounced effect on the flow field within the tank than variations in jet count,and these findings offer a theoretical basis for optimizing the configuration of airlift water jets in large-scale circular aquaculture tanks.关键词
陆基圆池/气提推水器/水动力特性/平均流速/均匀系数Key words
land-based circular aquaculture tank/airlift water jets/hydrodynamic characteristics/average velocity/uniformity coefficient分类
农业科技引用本文复制引用
陈佳能,桂福坤,冯德军,南海林,周其贤,张清靖,吴彦飞..基于现场试验的大尺寸圆形养殖池水动力特性[J].中国水产科学,2025,32(8):1186-1197,12.基金项目
国家自然科学基金项目(32273189) （32273189）
北京市农林科学院科技创新能力建设专项(KJCX20251205) （KJCX20251205）
北京市农林科学院水产科学研究所所长基金项目(JJPY-2025-05) （JJPY-2025-05）
河北省重点研发计划项目(22326701D,19226703D) （22326701D,19226703D）
现代农业产业技术体系北京市渔业创新团队(BAIC07-2025-07) （BAIC07-2025-07）
渔业生物技术北京重点实验室项目(PT2025-20). （PT2025-20）
