Water distribution network design using a robustness index

Donghwi Jung, Doosun Kang, Kevin Lansey

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Scopus citations

Abstract

In past years, optimal design of water distribution system (WDS) has been done by minimizing economic costs while meeting the pressure requirement at the critical node, so-called least-cost design. In last two decades, studies have moved to multi-objective problems by maximizing the system reliability while minimizing total cost under pressure constraint. System reliability is generally measured by the probability that the stochastic nodal pressures will be higher than allowable minimum pressure limit under variations of system parameters, such as nodal demands and pipe roughness coefficients. Including reliability as one of the objectives brought idea of system uncertainties into the system design process. Increasing reliability, however, mainly results in increased mean pressure at the critical nodes (with the lowest pressure) and doesn't improve the system robustness interpreted by pressure variations. Robust network is favored since it has less variation on its performance against the system uncertainties. Here a new measure, so-called robustness index, is developed and utilized as an objective for a WDS optimal design. The robustness-based design is compared with the reliability-based design using applications to Anytown network design. The Pareto-front optimization results from both design approaches are compared and post-optimization analyses using system hydraulic availability (SHA) are performed to determine the advantages of the robustness-based optimization approach.

Original languageEnglish (US)
Title of host publicationWorld Environmental and Water Resources Congress 2012
Subtitle of host publicationCrossing Boundaries, Proceedings of the 2012 Congress
Pages3310-3319
Number of pages10
DOIs
StatePublished - Sep 17 2012
EventWorld Environmental and Water Resources Congress 2012: Crossing Boundaries - Albuquerque, NM, United States
Duration: May 20 2012May 24 2012

Publication series

NameWorld Environmental and Water Resources Congress 2012: Crossing Boundaries, Proceedings of the 2012 Congress

Other

OtherWorld Environmental and Water Resources Congress 2012: Crossing Boundaries
Country/TerritoryUnited States
CityAlbuquerque, NM
Period5/20/125/24/12

ASJC Scopus subject areas

  • Water Science and Technology

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