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田尧天,江全星,彭昆,等.基于CFD的泵站进水流道优化[J].农业工程,2024,14(6):92-99. DOI: 10.19998/j.cnki.2095-1795.2024.06.016
引用本文: 田尧天,江全星,彭昆,等.基于CFD的泵站进水流道优化[J].农业工程,2024,14(6):92-99. DOI: 10.19998/j.cnki.2095-1795.2024.06.016
TIAN Yaotian,JIANG Quanxing,PENG Kun,et al.CFD optimization study of intake channel of pumping station[J].Agricultural Engineering,2024,14(6):92-99. DOI: 10.19998/j.cnki.2095-1795.2024.06.016
Citation: TIAN Yaotian,JIANG Quanxing,PENG Kun,et al.CFD optimization study of intake channel of pumping station[J].Agricultural Engineering,2024,14(6):92-99. DOI: 10.19998/j.cnki.2095-1795.2024.06.016

基于CFD的泵站进水流道优化

CFD Optimization Study of Intake Channel of Pumping Station

  • 摘要: 受限于用地规模、地形等因素,我国排水泵站流道的设计趋于复杂,普遍具有流道深、狭长的特点。这导致泵站进水流道存在回流、流速分布不均匀等不良流态,影响泵站安全稳定运行。以某泵站为实例,采用计算流体力学(computational fluid dynamics,CFD)技术,通过改变肘形流道的弯曲段长度、底边线倾角和喉管高度,拟定优化设计方案,采用基于CFD的数值模拟方法分析流道内部流场分布,并根据流道出口的流速分布均匀度、速度加权平均角度和流道水力损失等水力指标比选,优选出最优方案。该研究为进水流道设计提供了更精细的优化手段,弥补了传统经验设计方法只能定性分析的不足,得到的最优设计方案可供类似工程参考,保障泵站机组的稳定运行。

     

    Abstract: Limited by size of urban land, topography, and other factors, design of urban pumping station flow channels in China tends to be complex, generally with features of deep, narrow, and long flow channels.This leads to existence of backflow, uneven flow velocity distribution, and other undesirable flow patterns in inlet channels of pumping stations, affecting safe and stable operation of pumping stations.Computational fluid dynamics(CFD)technology was used to optimize design scheme by changing length of bending section, inclination angle of bottom edge, and throat height of elbow-shaped flow channel.Flow field distribution inside flow channel was analyzed by CFD-based numerical simulation, and optimal solution was selected based on uniformity of flow velocity distribution, velocity-weighted average angle, and hydraulic loss of flow channel.A more refined optimization method for design of inlet flow channel was provided, which could make up for shortage of traditional empirical design method that could only be analyzed qualitatively.This optimal design solution could be used as a reference for similar projects to ensure stable operation of pumping station unit.

     

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