Seamless pressure-deficient water distribution system model

Tiku Tanyimboh, AB Templeman

Research output: Contribution to journalArticle

58 Citations (Scopus)

Abstract

Pressure-deficient conditions are a common occurrence in water distribution systems. These situations require accurate modelling for timely decision making. However, the conventional demand-driven analysis approach to network modelling is unsuitable for operating conditions with insufficient pressure. Increasing emphasis is being placed on the need for water companies to satisfy stringent performance standards for the continuous supply of water to consumers and it is those pressure-deficient operating conditions which are critical in determining whether or not adequate supplies can be provided. It is therefore very unfortunate that the demand-driven analysis method becomes invalid for use in precisely those critical conditions. The aim of this paper is to present a new pressure-dependent demand function to help improve the simulation of pressure-deficient conditions. The proposed function has better computational properties than those in the literature and has been incorporated successfully in the governing equations for water distribution networks. In particular, the proposed function and its derivative do not have the discontinuities that often cause convergence difficulties in the solution of the constitutive equations. A robust Newton–Raphson algorithm was developed to model water distribution systems under both normal and pressure-deficient conditions in a seamless way. Examples which demonstrate the methodology are included.
LanguageEnglish
Pages389-396
Number of pages8
JournalProceedings of the ICE - Water Management
Volume163
Issue number8
DOIs
Publication statusPublished - May 2010

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constitutive equation
water
modeling
water distribution system
discontinuity
decision making
methodology
simulation
demand
analysis
distribution
need
method

Keywords

  • water supply
  • pipes
  • pipelines

Cite this

Tanyimboh, Tiku ; Templeman, AB. / Seamless pressure-deficient water distribution system model. In: Proceedings of the ICE - Water Management . 2010 ; Vol. 163, No. 8. pp. 389-396.
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Seamless pressure-deficient water distribution system model. / Tanyimboh, Tiku; Templeman, AB.

In: Proceedings of the ICE - Water Management , Vol. 163, No. 8, 05.2010, p. 389-396.

Research output: Contribution to journalArticle

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