Numerical simulation of inlet placement on sewage characteristics in the rounded square aquaculture tank with single inlet

Xiaozhong REN; Yixuan HU; Yinxin ZHOU; Shupeng DU; Wei SUN; Hangfei LIU; Chenxu ZHAO; Ying LIU

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Numerical simulation of inlet placement on sewage characteristics in the rounded square aquaculture tank with single inlet

Aquaculture and Fisheries | Updated：2024-10-11

- Numerical simulation of inlet placement on sewage characteristics in the rounded square aquaculture tank with single inlet
- Journal of Oceanology and Limnology Vol. 42, Issue 4, Pages: 1359-1382(2024)
- Affiliations：
  
  1. Key Laboratory of Environment Controlled Aquaculture (Dalian Ocean University) Ministry of Education, Dalian 116023, China
  2. College of Marine Science and Environment, Dalian Ocean University, Dalian 116023, China
  3. College of Ocean and Civil Engineering, Dalian Ocean University, Dalian 116023, China
  4. Zhejiang University, Hangzhou 310058, China
- Author bio：
  
  liuhangfei@zju.edu.cn
  liuyingzju@zju.edu.cn
- Funds：
- DOI：
  CLC：
- Received：03 June 2023，
  
  Online First：27 November 2023，
  
  Published：01 July 2024
- Accepted：
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REN Xiaozhong,HU Yixuan,ZHOU Yinxin,et al.Numerical simulation of inlet placement on sewage characteristics in the rounded square aquaculture tank with single inlet[J].Journal of Oceanology and Limnology,2024,42(04):1359-1382.
DOI：

REN Xiaozhong,HU Yixuan,ZHOU Yinxin,et al.Numerical simulation of inlet placement on sewage characteristics in the rounded square aquaculture tank with single inlet[J].Journal of Oceanology and Limnology,2024,42(04):1359-1382. DOI：

摘要

Abstract

To improve the self-cleaning ability of aquaculture tank and the efficiency of circulating water

physical and numerical experiments were conducted on the influence of inlet structure on sewage discharge in a rounded square aquaculture tank with a single inlet. Based on the physical model of the tank

analysis of how inlet structure adjustment affects sewage discharge efficiency and flow field characteristics was conducted to provide suitable flow field conditions for sinkable solid particle discharge. In addition

an internal flow field simulation was conducted using the RNG

-‍

turbulence model in hydraulic drive mode. Then a solid-fluid multiphase model was created to investigate how the inlet structure affects sewage collection in the rounded square aquaculture tank with single inlet and outlet. The finding revealed that the impact of inlet structure is considerably affecting sewage collection. The conditions of

0.07‍‍‍–‍0.11 (the ratio of horizontal distance between the center of the inlet pipe and the tank wall (

) to length of the tank (

)) and

α‍=

25° (

is the angle between the direction of the jet and the tangential direction of the arc angle) resulted in optimal sewage collection

which is similar to the flow field experiment in the rounded square aquaculture tank with single inlet and outlet. An excellent correlation was revealed between sewage collection an

d fluid circulation stability in the aquaculture tank. The present study provided a reference for design and optimization of circulating aquaculture tanks in aquaculture industry.

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Keywords

references

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Related Author

Xianying SHI

Hangfei LIU

Chenxu ZHAO

Wei SUN

Shupeng DU

Xiaozhong REN

Meng LI

Related Institution

Key Laboratory of Environment Controlled Aquaculture (Dalian Ocean University), Ministry of Education

College of Biosystems Engineering and Food Science (BEFS), Zhejiang University

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