本文通过以下几个方面探讨了工程师和仿真工具面临的具体技术挑战: 波特兰水务局和Advantica Stoner的经验。波特兰有一个模型 超过30000种元素，但其显著特征是包含600多种压力 提供165个压力区的调节器。理解真实系统的行为是相当困难的 很难，所以水力模型是一个很好的操作和规划辅助工具。然而，模拟 具有这种压力调节程度的系统对当前的建模提出了挑战 技术这项挑战受到了不同角度的攻击: 现场和台架试验； 检查和调整模型中设施的表示方式；以及加强 模拟器。讨论了处理这一复杂系统的经验。模仿 比较了性能和预期性能，并总结了试验台上的试验结果 介绍了使用中的压力调节器。包括数字。

This paper explores the specific technical challenges to both engineer and simulation tool through the experience of the Portland Water Bureau and Advantica Stoner. Portland maintains a model of more than 30,000 elements, but the striking feature is the inclusion of over 600 pressure regulators supplying 165 pressure zones. Understanding the real system's behavior is quite difficult, so a hydraulic model is a great operational and planning aid. However, simulating a system with this degree of pressure regulation presents challenges to current modeling technology. The challenge was attacked from various angles: field and bench testing; examination and adjustment of how facilities are represented in the model; and enhancement of the simulator. The experiences dealing with this complex system are discussed. Modeled behavior and expected behavior are compared, and a summary of bench test results on the pressure regulators in use is presented. Includes figures.