Data on testing AirSWMM(v2.0) in water supply networks during pipe filling events

Intermittent water supply systems are prone to air entrapments during the pipe-filling phase. This work aims to analyse and discuss the numerical results obtained by applying the recently developed AirSWMM model, an extension of SWMM incorporating air phase, to a laboratory network. Experimental data consisting of pressure-head at multiple locations and video recordings of air entrapments are collected in a single loop network with a high point, for different pipe-filling conditions, system layouts and node elevations. Experimental tests have shown that the air entrapment occurred not only at the high point but also throughout the pipe network, creating air pockets with elongated shapes and larger volumes than for single pipes. AirSWWM model with air-entrapment formation, growth and transport is tested inthe pipe network, and results are compared with measurements. AirSWWM model can correctly locate large air pockets but underestimates their volume.

间歇性供水系统在充管阶段极易出现空气截留现象。本研究以实验室管网为研究对象，应用新近开发的AirSWMM模型（AirSWMM，一种集成空气相态的SWMM（暴雨管理模型，Storm Water Management Model）扩展模型），对其生成的数值模拟结果开展分析与讨论。研究针对不同充管工况、系统布局及节点高程，在带有高点的单环路管网中采集了多测点压头数据与空气截留现象的视频录像，构建实验数据集。实验测试结果显示，空气截留不仅发生在管网高点处，还会遍布整个管网，形成相较于单根管道中体积更大、形状更修长的气袋。本研究在该管网中对集成空气截留形成、生长与输运过程的AirSWMM模型进行了验证，并将模拟结果与实测数据进行对比。AirSWMM模型可准确定位大型气袋的位置，但会低估其体积。