Impacts of Nodal Demand Allocations on Transient-Based Skeletonization of Water Distribution Systems
Publication: Journal of Hydraulic Engineering
Volume 146, Issue 9
Abstract
Urban water distribution systems (WDSs) are often skeletonized to enable efficient system analysis and management. While different methods are available to account for transient dynamics within the skeletonization processes, they often ignore the potential impacts induced by nodal demand allocations. This paper proposes a transient-based method to skeletonize pipes in series with internal demands, where the optimal demand allocation strategy is determined by a minimization approach associated with a probabilistic evaluation method. In addition, this paper makes the first attempt to investigate the impacts of different nodal demand allocation strategies on reproducing transient dynamics within the skeletonization process. The proposed method is demonstrated for a hypothetical transmission system and a realistic WDS. Results show that the impact of demand allocations on transient dynamics is positively correlated with demand values and that the proposed skeletonization method overall outperforms the traditional methods in capturing the transient dynamics of the original WDS, especially for nodes with relatively large demands.
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Data Availability Statement
Details of models, data, or results used/generated during this study are available from the corresponding author by request.
Acknowledgments
The corresponding author, Professor Feifei Zheng, was funded by the National Science and Technology Major Project for Water Pollution Control and Treatment (2017ZX07201004), Excellent Youth Natural Science Foundation of Zhejiang Province (LR19E080003), and the National Natural Science Foundation of China (Grant No. 51708491). Dr. Duan was supported by the Hong Kong Research Grants Council under Project 15201017.
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Published In
Journal of Hydraulic Engineering
Volume 146 • Issue 9 • September 2020
Copyright
©2020 American Society of Civil Engineers.
History
Received: May 16, 2019
Accepted: Mar 25, 2020
Published online: Jun 17, 2020
Published in print: Sep 1, 2020
Discussion open until: Nov 17, 2020
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