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- Title
Exploratory Analysis of Surrogate Metrics to Assess the Resilience of Water Distribution Networks.
- Authors
Carneiro, Joana; Loureiro, Dália; Covas, Dídia
- Abstract
This study compares and discusses the adequacy of surrogate resilience metrics proposed in the literature for resilience assessment of drinking water systems concerning demand increase and network redundancy. A sensitivity analysis is carried out for increasing flow rates using a conceptual case study with different layouts and demand scenarios, selecting several metrics to assess the resilience of two real network areas. Resilience metrics based on surplus energy are sensitive to network layout and demand scenarios. The network resilience index considers hydraulic reliability and network diameter uniformity. In contrast, the weighted resilience index also considers the network topology and gives importance to pipes with higher flow rates. Entropy‐based resilience metrics mainly rely on the network flows' uniformity and are sensitive to pipe redundancy. The entropy metric most adequate to assess the hydraulic capacity is the diameter‐sensitive flow entropy, since it is sensitive to the velocity inside the pipes. Topology metrics cannot assess the hydraulic capacity though evaluate the system redundancy (meshed‐ness coefficient), robustness (central‐point dominance) and water transportation efficiency (average‐path length). Surrogate resilience metrics do not assess the system performance during a failure. They indicate systems which are better prepared to overcome failure events and increased demand events, providing vital information to drinking water systems management. Key Points: Comparative study of surrogate resilience metrics based on surplus energy, entropy and graph‐theorySensitivity analysis allowed the selection of adequate metrics to assess resilience to demand increase and pipe failureThe weighted resilience index is the most complete metric, capable of assessing hydraulic resilience and network redundancy
- Subjects
MARITIME shipping; HUFFMAN codes; WATER efficiency; PIPE flow; WATER distribution; DRINKING water
- Publication
Water Resources Research, 2023, Vol 59, Issue 8, p1
- ISSN
0043-1397
- Publication type
Article
- DOI
10.1029/2022WR034289