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首页> 外文期刊>Journal of Hydroinformatics >Linear model of water movements for large-scale inverted siphon in water distribution system
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Linear model of water movements for large-scale inverted siphon in water distribution system

机译：水分配系统大规模倒虹吸管水运动的线性模型

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This paper proposes a linear model that relates the pressure head variations at the downstream end of an inverted siphon to the flow rate variations at two ends. It divides the pressure head variations in the inverted siphon into low-frequency part and high-frequency part. The two parts are caused by the deformation of the siphon wall and the reflection of acoustic wave, respectively. In order to build a simplified relation between wall deformation and low-frequency pressure head variations, the Preissmann slot method (PSM) is adopted in this paper. The linear model can also be used in other forms of structures, such as pipes and tunnels, where a pressurized flow condition is present. In comparison with simulation results using the finite volume method, the linear model shows an L-2 norm of 0.177 for a large-scale inverted siphon and 0.044 for a PVC pipe. To this end, the linear model is adopted to model a large-scale inverted siphon in a virtual water delivery system. Simulation results show that the inverted siphon can reduce water fluctuations. An equation to quantify this effect is proposed based on the linear model.
机译：本文提出了一种线性模型，其将倒置虹吸的下游端的压力头变化与两端的流速变化相关。它将倒虹吸的压力头变为低频部分和高频部分分开。两部分是由虹吸壁的变形和声波的反射引起的。为了在墙壁变形和低频压力头变化之间构建简化关系，本文采用了预先采用了预先采用的预展示槽法（PSM）。线性模型也可以用于其他形式的结构，例如管道和隧道，其中存在加压流动条件。与使用有限体积法的仿真结果相比，线性模型显示为0.177的L-2标数，对于PVC管，大规模倒置虹吸管和0.044。为此，采用线性模型在虚拟输送系统中模拟大型倒立虹吸管。仿真结果表明，倒虹吸管可以降低水波动。基于线性模型提出了一种量化这种效果的等式。

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