Study on the Flow Characteristics in a Large Land-Based Circular Aquaculture Tank Based on Field Experiments

文献类型： 外文期刊

第一作者： Wu, Yanfei

作者： Wu, Yanfei;Chen, Jianeng;Jia, Chengxia;Zhou, Qixian;Zhang, Qingjing;Chen, Jianeng;Gui, Fukun;Feng, Dejun;Zhang, Qingjing

作者机构：

关键词： land-based circular tank; water pusher; cultured fish; hydrodynamic characteristics; average flow velocity; uniformity coefficient

期刊名称：JOURNAL OF MARINE SCIENCE AND ENGINEERING （ 影响因子：2.8； 五年影响因子：2.8 ）

ISSN：

年卷期： 2025 年 13 卷 3 期

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收录情况： SCI

摘要： The rapid expansion of large-scale aquaculture has created a demand for more efficient and sustainable farming systems. Among these, land-based circular tank aquaculture is emerging as a key solution due to its high efficiency, scalability, and effective waste management capabilities. Optimizing the hydrodynamic characteristics of these tanks is crucial for improving water quality management and ensuring the health of cultured fish. This study investigates the hydrodynamic characteristics of large land-based circular tanks, focusing on the effects of water pusher configurations and the presence of fish on flow dynamics and sewage collection efficiency. Field experiments were conducted under two conditions: with and without fish, while varying the pusher diameter, deployment angles, and the number of pushers. The flow characteristics at different layers of the tanks were measured using Acoustic Doppler Velocimetry. The results indicate that the pusher deployment has a more significant impact on the flow field and hydrodynamic characteristics compared with the pusher diameter. The optimal configuration for water circulation and sewage collection was identified when the pusher diameter was 11 cm, the deployment angle was 45 degrees, and the number of pushers was 6. The presence of fish significantly influenced the flow field distribution by expanding high velocity flow zones. The findings provide a theoretical basis for optimizing water pusher deployment in large-scale circular tanks with fish, thereby contributing to improved water quality management and fish health.

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