Maximum entropy design of water distribution systems under multiple operating conditions

Anna Czajkowska, Tiku Tanyimboh

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Abstract

This paper presents an optimal design methodology for the design of water distribution systems based on a multi-objective genetic algorithm, namely NSGA II, coupled with water distribution network simulation software, EPANET 2 and subroutine that calculates entropy. The novelty of this research is that it is a reliability-based approach that combines least cost design based on real-world commercial pipe sizes with maximum entropy for water distribution systems working under multiple operating conditions. The new approach has been demonstrated by designing a well known benchmark network. Results generated using multiple operating conditions and the commonly used single operating condition are presented and compared. It is shown that designs based on multiple operating conditions do not entail excessive cost, have more uniform pipe diameters and are more reliable.
Original languageEnglish
Number of pages8
Publication statusPublished - Jul 2012
Event10th International Conference on Hydroinformatics - Hamburg, Germany
Duration: 14 Jul 201218 Jul 2012

Conference

Conference10th International Conference on Hydroinformatics
CountryGermany
CityHamburg
Period14/07/1218/07/12

Keywords

  • maximum entropy formalism
  • water distribution system
  • surrogate reliability indicators
  • multiobjective evolutionary optimization
  • genetic algorithm
  • NSGA II
  • EPANET 2
  • resilience index
  • surplus power factor

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