The analysis of water distribution system is not feasible without case studies. However, it is evident that setting up those case studies for modelling is time and resource intensive. To bridge this gap the WDS Designer was developed. This tool supports the automatic generation of water distribution networks based on given GIS-data for housing and population densities as well as a digital elevation map. The generation process of a network includes (1) the creation of a network layout with different characteristics (e.g. mesh degree), (2) an auto pipe-sizing that leads to realistic pipe design and (3) the export to hydraulic solvers for further hydraulic and quality investigations. The generated networks provide an unlimited number of test cases to obtain comprehensive results from investigations (hence, no case-specific results). The WDS Designer used unchangeable and thus fixed GIS-data as input and only static water distribution systems (no demand patterns) with low complexity, neglecting pressure zones, pumps and tanks. This is a clear short-coming of that approach. In this work an enhancement of the generation process is presented by introducing several pressure zones, pumps and tanks as well as different demand patterns. Further, it is demonstrated how a simulation with demand patterns impacts water age distributions. Simulations with demand patterns are compared to hydraulic steady state simulations. The analysis is performed with numerous case studies with different network characteristics (looped, branched).
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