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Evaluation of Reliability Indicators for WDNs with Demand-Driven and Pressure-Driven Models

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  • Tonino Liserra
  • Marco Maglionico
  • Valentina Ciriello
  • Vittorio Di Federico

Abstract

Reliability of water distribution networks (WDNs) has received much attention in recent years due to progressive aging of infrastructures and climate change. Several reliability indicators, focusing on hydraulic aspects rather than water quality, have been proposed in literature. Reliability is generally assessed resorting to well established methods coupling hydraulic simulations and stochastic techniques that describe the WDNs hydraulic performance and component availability respectively. Two main algorithms are employed to simulate WDNs: the demand driven approach (DDA) that disregards the physical relationship between actual water demand and nodal pressure, and the pressure driven approach (PDA) that explicitly incorporates it. In this paper, we show how the choice of hydraulic solver may affect reliability indicators. We modify existing quantitative indicators at nodal and network level, and define novel indicators to consider water quality aspects. These indicators are evaluated for three example WDNs; discrepancies between results obtained with the two approaches depend on network size, feeding scheme and skeletonization. Results suggest to use with caution the DDA for reliability assessment at both local and global level. Copyright Springer Science+Business Media Dordrecht 2014

Suggested Citation

  • Tonino Liserra & Marco Maglionico & Valentina Ciriello & Vittorio Di Federico, 2014. "Evaluation of Reliability Indicators for WDNs with Demand-Driven and Pressure-Driven Models," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 28(5), pages 1201-1217, March.
    • Handle: RePEc:spr:waterr:v:28:y:2014:i:5:p:1201-1217
    DOI: 10.1007/s11269-014-0522-5
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    References listed on IDEAS

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    1. Calvin Siew & Tiku Tanyimboh, 2012. "Pressure-Dependent EPANET Extension," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 26(6), pages 1477-1498, April.
    2. José Martínez-Rodríguez & Idel Montalvo & Joaquín Izquierdo & Rafael Pérez-García, 2011. "Reliability and Tolerance Comparison in Water Supply Networks," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 25(5), pages 1437-1448, March.
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    1. Jeongwook Choi & Doosun Kang, 2020. "Improved Hydraulic Simulation of Valve Layout Effects on Post-Earthquake Restoration of a Water Distribution Network," Sustainability, MDPI, vol. 12(8), pages 1-20, April.
    2. Mohd Abdy Sayyed & Rajesh Gupta & Tiku Tanyimboh, 2015. "Noniterative Application of EPANET for Pressure Dependent Modelling Of Water Distribution Systems," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 29(9), pages 3227-3242, July.
    3. P. Sivakumar & R. Prasad, 2014. "Simulation of Water Distribution Network under Pressure-Deficient Condition," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 28(10), pages 3271-3290, August.
    4. Longxia Qian & Hongrui Wang & Keni Zhang, 2014. "Evaluation Criteria and Model for Risk Between Water Supply and Water Demand and its Application in Beijing," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 28(13), pages 4433-4447, October.
    5. Milad Latifi & Mohammad Amin Gheibi & Seyed Taghi (Omid) Naeeni, 2018. "Improving Consumer Satisfaction in Water Distribution Networks Through Optimal Use of Auxiliary Tanks (A Case Study of Kashan City, Iran)," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 32(12), pages 4103-4122, September.
    6. Carlo Ciaponi & Luigi Franchioli & Enrico Murari & Sergio Papiri, 2015. "Procedure for Defining a Pressure-Outflow Relationship Regarding Indoor Demands in Pressure-Driven Analysis of Water Distribution Networks," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 29(3), pages 817-832, February.

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