Coupled topology and pipe size optimization of water distribution systems

Salah H A Saleh, Tiku Tanyimboh

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)
149 Downloads (Pure)


This paper describes a new multi-objective evolutionary optimization approach to the simultaneous layout and pipe size design of water distribution systems. Pressure-deficient and topologically infeasible solutions are fully incorporated in the genetic algorithm without recourse to constraint violation penalties or tournaments. The proposed approach is demonstrated by solving three benchmark problems taken from the literature. New optimal layouts and/or new feasible solutions that are cheaper than the best solutions in the literature were found for both branched and looped network configurations. Specifically, a new best solution was generated for each of the above-mentioned benchmark problems. In addition, the case of the looped design of a hitherto branched network in the literature was considered. Detailed results are included that show that the proposed approach achieves good solutions efficiently and consistently.
Original languageEnglish
Pages (from-to)4795-4814
Number of pages20
JournalWater Resources Management
Issue number14
Early online date18 Sep 2013
Publication statusPublished - Oct 2013


  • water distribution system
  • topology optimization
  • penalty-free evolutionary optimization approach
  • multi-objective optimization


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