渔业现代化2025，Vol.52Issue(2)：37-45,9.DOI:10.3969/j.issn.1007-9580.2025.02.005
气提式育苗池吸污装置多相流动特性研究
Research on multiphase flow characteristics of air lift sewage suction equipment in nursery tank
摘要
Abstract
To explore the gas-liquid-solid three-phase flow characteristics during the operation of the pneumatic lift sludge suction equipment in the hatchery tank and establish a structural optimization method for the pipeline gas lift sludge suction device,the Fluent computational fluid dynamics tool was used.Based on the Euler multi-phase flow model and the dense discrete phase(DDPM)model,the influence of the structural form of the pneumatic lift pool bottom sludge suction equipment on the sludge suction performance was analyzed.The test results show that:the gas-liquid-solid three-phase flow process within the air-lift pipeline can be divided into the initial stage,pressure relief stage,lifting stage,and stable stage.The diameter,number,and spacing of the openings in the air-lift pipeline,as well as the height from the bottom,directly affect its sludge suction performance.Appropriate adjustment of the opening spacing can enhance the effectiveness of sludge suction.The optimal diameter for the openings in the air-lift pipeline is approximately 4 mm.Increasing the number of openings in the air-lift pipeline by 2.5 times results in a 27.2％decrease in the efficiency of the air-lift system.In contrast,increasing the height of the pipeline from the bottom by 3 times leads to a 31.6％reduction in system efficiency.Therefore,it is advisable to avoid increasing the number of openings and the height from the bottom in the air-lift pipeline.关键词
育苗池/清污/水动力/多相流特性/气提效率Key words
nursery tank/cleaning/hydrodynamic/multi-phase flow characteristics/air lift efficiency分类
能源与动力引用本文复制引用
刘安东,张海耿,管崇武,黄达,张宇雷..气提式育苗池吸污装置多相流动特性研究[J].渔业现代化,2025,52(2):37-45,9.基金项目
国家重点研发计划"工厂化鱼池清污和死鱼收集机器人创制(2022YFD2001703)" （2022YFD2001703）
国家海水鱼产业技术体系项目(2023LKY010) （2023LKY010）
中国水产科学研究院科技创新团队项目(2023TD83) （2023TD83）
