Multi-Objective Optimal Design of Water Distribution Networks Accounting for Transient Impacts

Transients are commonly triggered in urban water distribution networks (WDNs) due to daily system management and operation. While these transients are unlikely to cause catastrophic consequences immediately, frequent occurrences can result in prolonged deterioration of infrastructure safety and life...

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Vydané v:Water resources management Ročník 34; číslo 4; s. 1517 - 1534
Hlavní autori: Huang, Yuan, Zheng, Feifei, Duan, Huan-Feng, Zhang, Qingzhou
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: Dordrecht Springer Netherlands 01.03.2020
Springer Nature B.V
Predmet:
algorithms
Atmospheric Sciences
Civil Engineering
Classification
Design criteria
Design engineering
Design optimization
Distribution
Earth and Environmental Science
Earth Sciences
economic costs
Economic impact
Economics
Environment
Genetic algorithms
Geotechnical Engineering & Applied Earth Sciences
Hydrogeology
Hydrology/Water Resources
infrastructure
Life cycles
Multiple objective analysis
Pipes
Reliability aspects
Sorting algorithms
Switching theory
system optimization
transient flow
Unsteady flow
Water distribution
Water engineering
Hydraulic transients
Multi-objective optimization
WDN reliability
Water distribution networks (WDNs)
ISSN:0920-4741, 1573-1650
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Shrnutí:Transients are commonly triggered in urban water distribution networks (WDNs) due to daily system management and operation. While these transients are unlikely to cause catastrophic consequences immediately, frequent occurrences can result in prolonged deterioration of infrastructure safety and life cycles in the long term. To account for such impacts in the design of WDNs, a multi-objective optimization method coupled with the Non-dominated Sorting Genetic Algorithm III is proposed in this paper, where two transient-based objectives are incorporated into the WDN design process. Additionally, an engineering design constraint in the decision space is developed to ensure that the sizes of upstream pipes are not smaller than those downstream, thereby improving the engineering practicality of the optimal design solutions. Two WDN cases with transient conditions triggered by pump switching are applied to demonstrate the effectiveness of the proposed method. The results show that the widely used reliability metric based on steady-state conditions is unable to fully represent the transient impacts and that upsizing pipes can reduce transient impacts but at the expense of high economic costs. It is also found that optimally designed pipe diameters can be effective to mitigate transient impacts, in addition to the use of traditional protection devices. The proposed method represents the first step in investigating the underlying relationships between WDN design and unsteady flow effects and is a supplement to current WDN design criteria.
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ISSN:0920-4741
1573-1650
DOI:10.1007/s11269-020-02517-4