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Effect of combined water-jet inlets on the hydrodynamic performances in square arc-corner aquaculture tanks

文献类型： 外文期刊

作者： Zhang, Jun 1 ; Gao, Yang 1 ; Chen, Congcong 1 ; Wang, Fang 1 ; Zhang, Ning 1 ; Cao, Shouqi 1 ; Liu, Xingguo 3 ; Hu, Qingsong 1 ; Zhang, Zheng 1 ;

作者机构： 1.Shanghai Ocean Univ, Shanghai 201306, Peoples R China

2.Natl Distant Water Fisheries Engn Res Ctr, Shanghai 201306, Peoples R China

3.Chinese Acad Fishery Sci, Fishery Machinery & Instrument Res Inst, Shanghai 200092, Peoples R China

关键词： Recirculating aquaculture system; Circulating water; Water injection device; Self-purification efficiency; Two-phase flow; Hydrodynamics

期刊名称：OCEAN ENGINEERING （ 影响因子：5.0； 五年影响因子：5.2 ）

ISSN： 0029-8018

年卷期： 2023 年 289 卷

页码：

收录情况： SCI

摘要： To enhance the energy utilization and waste collection efficiency in a recirculating aquaculture system (RAS), this study investigates the hydrodynamic performance of a square arc-corner aquaculture tank using various combined water-jet inlets. An experimental verification system was developed for the recirculating aquaculture tank (RAT) to validate the accuracy of the computational fluid dynamics (CFD) model. This was achieved by comparing flow velocities at various monitoring points. A comprehensive analysis of the tank's hydrodynamic performance was conducted, encompassing velocity distribution, vorticity strength, flow uniformity index, resistance coefficient, Froude number, energy utilization efficiency, and particle removal rate. The results clearly showed that incorporating combined water-jet inlets greatly improved the hydrodynamic performance of the tank compared to traditional one-way inflow patterns. The combined injection method ensured a more uniform flow velocity both longitudinally and radially throughout the RAT, effectively reducing the concentration of water flow in a single direction. Additionally, the tangential injection of water flow along the tank wall promoted a more even flow rate, enhancing water mixing and maintaining a homogeneous distribution of dissolved oxygen. By arranging and spacing the injection holes appropriately, the fluidity and mixing of water were enhanced, leading to increased energy utilization and improved efficiency in pollutant collection.

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