Fast and practical method for model reduction of large-scale water-distribution networks

F. Martinez Alzamora, B. Ulanicki, E. Salomons

Research output: Contribution to journalArticlepeer-review


This paper presents a method for the reduction of network models described by a system of nonlinear algebraic equations. Such models are, for example, present when modeling water networks, electrical networks, and gas networks. The approach calculates a network model equivalent to the original one, but containing fewer components. This procedure has an advantage compared with straightforward linearization because the reduced nonlinear model preserves the nonlinearity of the original model and approximates the original model in a wide range of operating conditions. The method is applicable to hydraulic analysis and has been validated by simplifying many practical water network models for optimization studies.

Original languageEnglish
Pages (from-to)444-456
Number of pages13
JournalJournal of Water Resources Planning and Management - ASCE
Issue number4
StatePublished - 2014
Externally publishedYes


  • Full linearized model
  • Full nonlinear model
  • Gaussian elimination
  • Large-scale water-distribution system simplification
  • Reduced linear model
  • Reduced nonlinear model
  • Water-distribution network

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Geography, Planning and Development
  • Water Science and Technology
  • Management, Monitoring, Policy and Law


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