Journal of the Korean Society of Fisheries and Ocean Technology (수산해양기술연구)

The Korean Society of Fisheries and Ocean Technology (한국수산해양기술학회)
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Analysis of land-based circular aquaculture tank flow field using computational fluid dynamics (CFD) simulation

전산 유체 역학(CFD)을 이용한 원형 양식 사육 수조 내부 유동장 해석

  • KWON, Inyeong (Smart Aquaculture Research Center, Chonnam National University) ;
  • KIM, Taeho (Department of Marine Production Management, Chonnam National University)
  • 권인영 (전남대학교 스마트수산양식연구센터) ;
  • 김태호 (전남대학교 해양생산관리학과)
  • Received : 2020.10.30
  • Accepted : 2020.11.19
  • Published : 2020.11.30
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Abstract

The objectives of this study were to develop the optimal structures of recirculating aquaculture tank for improving the removal efficiency of solid materials and maintaining water quality conditions. Flow analysis was performed using the CFD (computational fluid dynamics) method to understand the hydrodynamic characteristics of the circular tank according to the angle of inclination in the tank bottom (0°, 1.5° and 3°), circulating water inflow method (underwater, horizontal nozzle, vertical nozzle and combination nozzle) and the number of inlets. As the angle in tank bottom increased, the vortex inside the tank decreased, resulting in a constant flow. In the case of the vertical nozzle type, the eddy flow in the tank was greatly improved. The vertical nozzle type showed excellent flow such as constant flow velocity distribution and uniform streamline. The combination nozzle type also showed an internal spiral flow, but the vortex reduction effect was less than the vertical nozzle type. As the number of inlets in the tank increased, problems such as speed reduction were compensated, resulting in uniform fluid flow.

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References

  1. An CH, Sin MG, Kim MJ, Jong IB, Song GJ and Choe C. 2018. Effect of bottom drain positions on circular tank hydraulics: CFD simulations. Aquac Eng 83, 138-150. https://doi.org/10.1016/j.aquaeng.2018.10.005.
  2. Bregnballe J, 2017. A Guide to Recirculation Aquaculture. AquaInfo Co Ltd, the Food and Agriculture Organization of the United Nations (FAO) and EUROFISH International Organisation, South Korea, 24-27.
  3. Burrows RE and Chenoweth HH. 1970. The rectangular circulating rearing pond. The Progressive Fish-Culturist 32, 67-80. https://doi.org/10.1577/1548-8640(1970)32[67:TRCRP]2.0.CO;2
  4. Choi YW, Han MS, Song JH and Wang CK. 2018. Analysis of Water Storage Tank Flowfield using Computational Fluid Dynamics (CFD) Simulation. J Korean Soc Water Environ 34, 173-182. https://doi.org/10.15681/KSWE.2018.34.2.173.
  5. Davidson J and Summerfelt S. 2004. Solids flushing, mixing, and water velocity profiles within large (10 and 150 m3) circular 'Cornell-type'dual-drain tanks. Aquac Eng 32, 245-271. https://doi.org/10.1016/j.aquaeng.2004.03.009.
  6. Gorle JMR, Terjesen BF and Summerfelt ST. 2019. Hydrodynamics of Atlantic salmon culture tank: Effect of inlet nozzle angle on the velocity field. Comput Electron Agric 158, 79-91. https://doi.org/10.1016/j.compag.2019.01.046.
  7. Hirsch C. 2007. Numerical computation of internal and external flows: The fundamentals of computational fluid dynamics. Elsevier, USA, 1-647.
  8. Klapsis A and Burley R. 1984. Flow distribution studies in fish rearing tanks. Part 1-design constraints. Aquac Eng 3, 103-118. https://doi.org/10.1016/0144-8609(84)90002-5.
  9. Kwon I, Ceong H, Lee J, Kim ES, Kim WS, Kang SY, Hwang MJ and Kim T. 2019 Establishment of a development direction for smart aquaculture technology through patent analysis and a demand survey of experts and fishermen. J Korean Soc Fish Ocean Technol 55, 378-391. https://doi.org/10.3796/KSFOT.2019.55.4.378.
  10. Lekang OI. 2013. Aquaculture engineering (2nd. ed.), John Wiley & Sons, Ltd., West Sussex, UK, 227-238.
  11. Makinen T, Lindgren S and Eskelinen P. 1988. Sieving as an effluent treatment method for aquaculture. Aquac Eng 7, 367-377. https://doi.org/10.1016/0144-8609(88)90001-5.
  12. Oca J and Masalo I. 2013. Flow pattern in aquaculture circular tanks: Influence of flow rate, water depth, and water inlet & outlet features. Aquac Eng 52, 65-72. https://doi.org/10.1016/j.aquaeng.2012.09.002.
  13. Oca J, Masalo I and Reig L. 2004. Comparative analysis of flow patterns in aquaculture rectangular tanks with different water inlet characteristics. Aquac Eng 31, 221-236. https://doi.org/10.1016/j.aquaeng.2004.04.002.
  14. Summerfelt ST, Mathisen F, Holan AB and Terjesen BF. 2016. Survey of large circular and octagonal tanks operated at Norwegian commercial smolt and post-smolt sites. Aquac Eng 74, 105-110. https://doi.org/10.1016/j.aquaeng.2016. 07.004.
  15. Timmons MB, Summerfelt ST and Vinci BJ. 1998. Review of circular tank technology and management. Aquac Eng 18, 51-69. https://doi.org/10.1016/s0144-8609(98)00023-5.
  16. Venegas PA, Narvaez AL, Arriagada AE and Llancaleo KA. 2014. Hydrodynamic effects of use of eductors (Jet-Mixing Eductor) for water inlet on circular tank fish culture. Aquac Eng 59, 13-22. https://doi.org/10.1016/j.aquaeng.2013.12.001.
  17. Xue B, Ren X, Liu C, Yu L, Bi C and Zhang Q. 2019. A Study on the Influence of Bottom Structure in Recirculating Aquaculture Tank on Velocity Field. In The 29th International Ocean and Polar Engineering Conference. International Society of Offshore and Polar Engineers. 1325-1330