渔业现代化

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进径比对方形圆弧角养殖池内流场特性的影响研究

薛博茹1,2，姜恒志3，任效忠1,，于林平2，张倩1,2，王国峰4(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 国家海洋环境监测中心，辽宁 大连 116023；
4 沈阳工程学院，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 国家海洋环境监测中心，辽宁 大连 116023；
    4 沈阳工程学院，辽宁 沈阳 110136)
  • 出版日期:2020-08-20 发布日期:2020-12-07
  • 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:薛博茹（1996—），女，硕士研究生，研究方向：工程水动力学特性。E-mail: 745040524@qq.com
  • 基金资助:
    国家自然科学基金面上项目（31872609）；国家重点研发计划项目（2017YFD0701701）；自治区（新疆）重点研发计划项目（2017B01004-2）；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）

Study on the influence of the relative inflow distance on the flow field characteristics in square arc angle aquaculture tank#br#

XUE Boru1,2, JIANG Hengzhi3, REN Xiaozhong1,YU Linping2, ZHANG Qian1,2，WANG Guofeng4(1 Dalian Ocean University, Key Laboratory of Environment Controlled Aquaculture, Ministry of Education, Dalian 116023, China;#br# 2 College of Ocean and Civil Engineering, Dalian Ocean University, Dalian 116023, China;#br#  3 National Marine Environmental Monitoring Center, Dalian 116023, China;#br# 4 Shenyang Institute of Engineering, Shenyang 110136, China)   

  1. (1 Dalian Ocean University, Key Laboratory of Environment Controlled Aquaculture, Ministry of Education, Dalian 116023, China;
    2 College of Ocean and Civil Engineering, Dalian Ocean University, Dalian 116023, China;
     3 National Marine Environmental Monitoring Center, Dalian 116023, China;
    4 Shenyang Institute of Engineering, Shenyang 110136, China)
  • Online:2020-08-20 Published:2020-12-07

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摘要： 为研究进径比（参数C/B，射流孔位置到养殖池壁的水平距离C与养殖池短边边长B之比）对单管入流模式下双通道方形圆弧角养殖池系统流场特性的影响，基于计算流体动力学仿真技术，应用Fluent前处理软件Gambit构建三维数值计算模型，采用RNG k-ε湍流模型模拟循环水养殖池内流场。物理模型试验证明，该数值模型能够准确模拟方形圆弧角养殖池系统内的流场，同时提出能量有效利用系数评价养殖池系统的能量有效利用率。结果表明：优化进径比可有效改善养殖池系统内平均流速（a=0.05，P<0.000 1）、提高能量有效利用率。研究表明，进径比参数C/B在0.02~0.04区间有利于双通道方形圆弧角养殖池系统获得最佳水动力条件，为工厂化循环水养殖进水管的布设位置提供理论依据。

关键词: 养殖池, 进径比, 计算流体动力学, 流场特性

Abstract: In order to study the influence of the relative inflow distance (parameter C/B, C is the horizontal distance from inlet to sidewall, B is the width of the rectangular tank) on the flow field characteristics of the double-drain square arc angle aquaculture tank system under the pattern of single-inlet pipe, this paper, based on CFD simulation technology, applied Fluent pre-processing software Gambit to construct a three-dimensional numerical calculation model and RNG k-ε turbulence model to simulate the flow field in a recirculating aquaculture tank system. The physical model test shows that the numerical model could accurately simulate the flow field in the square arc angle aquaculture tank system, and the effective energy utilization coefficient is proposed to evaluate the effective energy utilization rate of the aquaculture tank system. The results indicate that the average velocity (a=0.05，P<0.0001) in the aquaculture tank system and the effective energy utilization rate could be effectively improved by adjusting the relative inflow distance. The findings indicated that when the parameter C/B is between 0.02 and 0.04, it is conducive to obtaining the optimal hydrodynamic conditions in the double-drain square arc angle aquaculture tank system, which provides a theoretical basis for the layout of the industrial recirculating aquaculture inlet pipe.

Key words: aquaculture tank, relative inflow distance, CFD, flow field characteristics