Effect of length-width ratio of rounded rectangle aquaculture tank in dual-diagonal-inlet layout on hydrodynamics  

作　　者：Meng LI Xiaozhong REN Shupeng DU Wei SUN Chenxu ZHAO Hangfei LIU Xianying SHI 

机构地区：[1]Key Laboratory of Environment Controlled Aquaculture(Dalian Ocean University),Ministry of Education,Dalian 116023,China [2]College of Biosystems Engineering and Food Science(BEFS),Zhejiang University,Hangzhou 310058,China [3]College of Ocean and Civil Engineering,Dalian Ocean University,Dalian 116023,China

出　　处：《Journal of Oceanology and Limnology》2024年第5期1695-1709,共15页海洋湖沼学报（英文）

基　　金：Supported by the National Natural Science Foundation of China(No.31872609);the Innovation Support Program for High-level Talents of Dalian City(No.2019RD12);the Key Research Project of Liaoning Provincial Department of Education in 2022(No.LJKZZ 20220091);the earmarked fund for CARS-49(CARS-49)。

摘　　要：To adapt to the change of aquaculture workshop site,optimize the shape of aquaculture tanks and improve the utilization rate of breeding space,it is necessary to determine the appropriate length width ratio parameters of aquaculture tanks.In this paper,computational fluid dynamics(CFD)technology is adopted to study the flow field performance of aquaculture tanks with different L/B ratios(L:the length;B:the width,of aquaculture tank)and different jet direction conditions(lengthways jet and widthways jet).A three-dimensional numerical calculation model of turbulence in rounded rectangle aquaculture tanks in dual-diagonal-inlet layout was established.Jet directions are arranged lengthways and widthways,and the water flow velocity,resistance coefficient change,vorticity,etc.are analyzed under two working conditions.Results show that the flow field performance in aquaculture tank decreases with the increase of the L/B ratio.The flow field performed well when L/B was 1.0-1.3,sharply dropped at 1.4-1.6,and poor at 1.7-1.9.The results provided a theoretical basis for the design and optimization in flow field performance of the industrialized circulating aquaculture tanks.

关 键 词：aquaculture tank length-width ratio computational fluid dynamic hydrodynamic 

分 类 号：S955.9[农业科学—水产养殖]