Elevated tanks are an integral part of the water supply networks. This paper highlights the effect of elevated tanks' location and size on the transient pressures resulting from the sudden failure of pumps. A comparison between the impact of elevated tanks and air vessels on the water hammer was also performed. The Bentley HAMMER model was first validated then applied to analyze the unsteady flow within an actual distribution network. The results display that the elevated tanks have a considerable effect on the surge pressures, where they improve the extreme pressures effectively at and around them, but they cannot fully protect the system from the water hammer risks, as there are still relatively large negative pressures at some distant junctions. Besides, as the tank capacity increases, the surge pressures increase slightly. In our case study, the best location of the elevated tank is at the network extremity and then at the pumping stations, since the minimum pressures improve by 67 and 54%, respectively. Although the present case study may differ from other supply systems, the obtained results can provide an indication of the elevated tanks' role in alleviating undesirable water hammer effects.

高架水箱是供水网络的一个组成部分。本文重点介绍了升高罐的位置和尺寸对泵突然故障引起的瞬态压力的影响。还对高架水箱和空气容器对水锤的影响进行了比较。Bentley HAMMER 模型首先经过验证，然后应用于分析实际配电网络中的不稳定流。结果表明，高架水箱对冲击压力有相当大的影响，它们有效地提高了其及其周围的极压，但它们不能完全保护系统免受水锤风险，因为在水锤处仍然存在较大的负压。一些遥远的路口。此外，随着油箱容量的增加，喘振压力略有增加。在我们的案例研究中，高架水箱的最佳位置是管网末端，然后是泵站，因为最低压力分别提高了 67% 和 54%。尽管本案例研究可能与其他供应系统不同，但获得的结果可以表明高架水箱在减轻不良水锤效应方面的作用。