渔业现代化

渔业现代化

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双通道排水系统对矩形圆弧角养殖池流场特性的影响研究

张倩1,2，桂劲松2，薛博茹1,2，任效忠1，熊玉宇1，王国峰3(1大连海洋大学设施渔业教育部重点实验室，辽宁 大连 116023；
2大连海洋大学海洋与土木工程学院，辽宁 大连 116023；
3沈阳工程学院能源与动力学院，辽宁 沈阳 110136)   

  1. (1大连海洋大学设施渔业教育部重点实验室，辽宁 大连 116023；
    2大连海洋大学海洋与土木工程学院，辽宁 大连 116023；
    3沈阳工程学院能源与动力学院，辽宁 沈阳 110136)
  • 出版日期:2020-12-20 发布日期:2021-01-06
  • 通讯作者: 任效忠（1981—），男，副研究员，研究方向：工程水动力学及工程设计。E-mail：renxiaozhong@dlou.edu.cn
  • 作者简介:张倩（1996—），女，硕士研究生，研究方向：工程水动力学。E-mail：zhangqian4924@163.com
  • 基金资助:
    国家自然科学基金面上项目（31872609）；自治区（新疆）重点研发计划项目（2017B01004-2）；国家重点研发计划项目（2017YFD0701701）；广东省重点领域研发计划（2019B020215001）；大连理工大学海岸和近海工程国家重点实验室开放基金项目（LP1818）；辽宁省高等学校海洋产业技术研究院项目（2018-CY-24）

Study on the effect of dual channel drainage system on flow field characteristics in rectangular arc angle aquaculture tank #br#

ZHANG Qian1,2, GUI Jinsong2, XUE Boru1,2, REN Xiaozhong1, XIONG Yuyu1, WANG Guofeng3(1 Key Laboratory of Facility Fishery, Ministry of Education, Dalian Ocean University, Dalian 116023, China;#br# 2 College of Ocean and Civil Engineering, Dalian Ocean University, Dalian 116023, China;#br# 3 College of Energy and Power, Shenyang Institute of Engineering, Shenyang 110136, China)   

  1. (1 Key Laboratory of Facility Fishery, Ministry of Education, Dalian Ocean University, Dalian 116023, China;
    2 College of Ocean and Civil Engineering, Dalian Ocean University, Dalian 116023, China;
    3 College of Energy and Power, Shenyang Institute of Engineering, Shenyang 110136, China)
  • Online:2020-12-20 Published:2021-01-06

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摘要： 为改善养殖池内水动力条件和基于提高养殖池自净能力的需求，采用双通道排水系统来实现养殖池内固体废弃物的第一级有效分离，并对双通道养殖池内的流场特性开展研究。基于计算流体力学（CFD）技术建立了矩形圆弧角养殖池的三维湍流数值模型，并对单通道和双通道养殖池流场特性进行对比分析。结果显示：在单管入流条件下，双通道养殖池的平均速度比单通道养殖池平均增长约7%，阻力系数平均降低约13%，同时均匀系数UC50平均大幅提高约23%；而在双管入流条件下，双通道养殖池的平均速度比单通道养殖池平均增长约8%，阻力系数平均降低约14%，均匀系数UC50平均增长约7%。研究表明，双通道养殖池的底流分流比对于流场特性的影响较小，双通道排水系统能够有效改善养殖池内水动力条件，增强水力混合特性。

关键词: 双通道排水系统, 矩形圆弧角养殖池, 流场特性, 计算流体力学

Abstract: In order to improve the hydrodynamic conditions in the aquaculture tanks and the self-cleaning capacity of the aquaculture tanks, a dual channel drainage system was used to achieve the first effective separation of solid waste in the aquaculture tanks, and the flow field characteristics in the dual channel aquaculture tanks were studied. Based on computational fluid dynamics (CFD) technology, the three-dimensional turbulent numerical model of rectangular arc angle aquaculture tanks was established in this paper, and the flow field characteristics of single channel and dual channel aquaculture tanks were compared and analyzed. The results show that in the case of single-tube inflow, the average velocity in dual channel aquaculture tanks was about 7% higher than that of single channel aquaculture tank, the resistance coefficient was about 13% lower and the uniformity coefficient UC50 was about 23% higher greatly. While in the case of double-tube inflow, the average velocity in dual channel aquaculture tanks was about 8% higher than that of single channel aquaculture tank, the resistance coefficient was about 14% lower and the uniformity coefficient UC50 was about 7% higher. The results indicate that the underflow split ratio in the dual channel aquaculture tanks has little effect on the flow field characteristics, and the dual channel drainage system can effectively improve the hydrodynamic conditions in the aquaculture tank and enhance the hydraulic mixing characteristics.

Key words: Dual channel drainage system, rectangular arc angle aquaculture tank, flow field characteristics, computational fluid dynamics