双进水管系统对单通道矩形圆弧角养殖池水动力特性影响的数值研究

Numerical study on the influence of double-inlet pipes system for single-drain rectangular arc angle aquaculture tank on hydrodynamic characteristics

为研究双进水管结构工况不同布设位置对海水循环水矩形圆弧角养殖池池底水动力特性的影响,基于RNG k-ε湍流模型,应用计算流体力学仿真技术,对双进水管结构工况下6种不同布设位置的养殖池内部流场进行三维数值模拟,采用流体动力学特征量重点分析排污口附近复杂的流场形态。研究结果表明:双进水管结构中进水管的布设位置对养殖池底部流速分布影响显著,双进水管均布设在圆弧角位置是优选布设,有利于改善养殖池底部水动力特性。

In order to research the influence on the hydrodynamic characteristics of single-drain marine aquaculture tank with different double-inlet pipes distances,especially the velocity distribution of the bottom and near discharge outlets.The RNG k-εturbulence model was applied to simulation the flow field in rectangular arc angle aquaculture tank,the computational fluid dynamics study is performed to analyze the impact of different layout positions under double-inlet pipes structure conditions on the flow field of the tank,and the fluid dynamics characteristics variables were adopted to analyze the complex the flow field in the near of sewage outlet.The results indicate that the position of the inlet pipe in the double-inlet pipe structure has a significant influence on the velocity distribution at the bottom of the tank;the double-inlet pipes at the arc angle is conducive to improve the hydrodynamic characteristics at the bottom of the tank.