This work compares several alternative methods of pressure-driven analysis (PDA) implemented within the code base of the EPANET water distribution system modeling software. The resulting code includes a direct method, the original and a newly modified version of the inverse method currently used by EPANET 2.2, and two recently published methods (the global gradient approach-based PDA and the active set method). The latter four methods solve PDA problems using an inverse flow–pressure relationship, whereas the direct method uses the original relationship. The alternative methods were extensively tested, and their performance was compared over several case study water distribution networks of vastly different sizes and complexities. The results showed that all of the new inverse methods are equally efficient and reliable, whereas the direct method is less reliable by having a higher frequency of failing to converge.

这项工作比较了在 EPANET 配水系统建模软件的代码库中实施的几种压力驱动分析 (PDA) 的替代方法。生成的代码包括直接方法、EPANET 2.2 当前使用的逆方法的原始和新修改版本，以及最近发布的两种方法（基于全局梯度方法的 PDA 和活动集方法）。后四种方法使用反向流量-压力关系解决 PDA 问题，而直接方法使用原始关系。对替代方法进行了广泛测试，并在几个大小和复杂性截然不同的案例研究配水网络中比较了它们的性能。结果表明，所有新的逆向方法都同样有效和可靠，