A fuzzy approach for considering uncertainty in transient analysis of pipe networks

Ali Haghighi, Alireza Keramat

Research output: Journal article publicationJournal articleAcademic researchpeer-review

17 Citations (Scopus)


Uncertain parameters in the transient analysis of pipe networks lead to uncertain responses. Typical uncertainties are nodal demand, pipe friction coefficient and wave speed, which not only are imprecise in nature but also change significantly over time. Exploiting the fuzzy set theory and a simple scheme of the simulated annealing method, a conceptual model is developed. It can take into account the uncertainties of conventional transient analysis. This model helps designers of pipe systems in finding out the extent to which uncertainties in the inputs can spread to the transient highest and lowest pressures. A real piping system is analyzed herein as the case study. The results show that the transient extreme pressures can be highly affected by the uncertainties.

Original languageEnglish
Pages (from-to)1024-1035
Number of pages12
JournalJournal of Hydroinformatics
Issue number4
Publication statusPublished - 2012
Externally publishedYes


  • Fuzzy sets
  • Pipe networks
  • Transient analysis
  • Uncertainties

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Water Science and Technology
  • Geotechnical Engineering and Engineering Geology
  • Atmospheric Science


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