Pressure-dependent EPANET extension: pressure-dependent demands

Tiku Tanyimboh, Calvin Siew

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

Abstract

In water distribution networks (WDNs), the available flow at a demand node is dependent on the pressure at that node. When a network is lacking in pressure, not all consumer demands will be met in full. In this context, the assumption that all demands are fully satisfied regardless of the pressure in the system becomes unreasonable and represents the main limitation of the conventional demand driven analysis (DDA) approach to WDS modelling. A realistic depiction of the network performance can only be attained by considering demands to be pressure dependent. This paper presents an extension of the renowned DDA based hydraulic simulator EPANET 2 to incorporate pressure‐dependent demands. This extension is termed “EPANET‐PDX” (pressure‐dependent extension) herein. The utilization of a continuous nodal pressure‐flow function coupled with a line search and backtracking procedure greatly facilitate the algorithm's convergence rate and robustness. Simulations of real life networks consisting of multiple sources, pipes, valves and pumps were successfully executed and results are presented herein. Excellent modelling performance was achieved for analysing both normal and pressure deficient conditions of the WDNs.
Original languageEnglish
Title of host publication12th International Conference on Water Distribution Systems Analysis
Publication statusPublished - Sep 2010
Event12th International Conference on Water Distribution Systems Analysis - Tucson, Arizona, United States
Duration: 12 Sep 201015 Sep 2010

Conference

Conference12th International Conference on Water Distribution Systems Analysis
CountryUnited States
CityTucson, Arizona
Period12/09/1015/09/10

Fingerprint

Electric power distribution
Wavelength dispersive spectroscopy
Network performance
Water
Simulators
Pipe
Hydraulics
Pumps

Keywords

  • EPANET
  • pressure-dependent demand
  • water distribution systems

Cite this

Tanyimboh, T., & Siew, C. (2010). Pressure-dependent EPANET extension: pressure-dependent demands. In 12th International Conference on Water Distribution Systems Analysis
Tanyimboh, Tiku ; Siew, Calvin. / Pressure-dependent EPANET extension: pressure-dependent demands. 12th International Conference on Water Distribution Systems Analysis. 2010.
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title = "Pressure-dependent EPANET extension: pressure-dependent demands",
abstract = "In water distribution networks (WDNs), the available flow at a demand node is dependent on the pressure at that node. When a network is lacking in pressure, not all consumer demands will be met in full. In this context, the assumption that all demands are fully satisfied regardless of the pressure in the system becomes unreasonable and represents the main limitation of the conventional demand driven analysis (DDA) approach to WDS modelling. A realistic depiction of the network performance can only be attained by considering demands to be pressure dependent. This paper presents an extension of the renowned DDA based hydraulic simulator EPANET 2 to incorporate pressure‐dependent demands. This extension is termed “EPANET‐PDX” (pressure‐dependent extension) herein. The utilization of a continuous nodal pressure‐flow function coupled with a line search and backtracking procedure greatly facilitate the algorithm's convergence rate and robustness. Simulations of real life networks consisting of multiple sources, pipes, valves and pumps were successfully executed and results are presented herein. Excellent modelling performance was achieved for analysing both normal and pressure deficient conditions of the WDNs.",
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Tanyimboh, T & Siew, C 2010, Pressure-dependent EPANET extension: pressure-dependent demands. in 12th International Conference on Water Distribution Systems Analysis. 12th International Conference on Water Distribution Systems Analysis, Tucson, Arizona, United States, 12/09/10.

Pressure-dependent EPANET extension: pressure-dependent demands. / Tanyimboh, Tiku; Siew, Calvin.

12th International Conference on Water Distribution Systems Analysis. 2010.

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

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AU - Siew, Calvin

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N2 - In water distribution networks (WDNs), the available flow at a demand node is dependent on the pressure at that node. When a network is lacking in pressure, not all consumer demands will be met in full. In this context, the assumption that all demands are fully satisfied regardless of the pressure in the system becomes unreasonable and represents the main limitation of the conventional demand driven analysis (DDA) approach to WDS modelling. A realistic depiction of the network performance can only be attained by considering demands to be pressure dependent. This paper presents an extension of the renowned DDA based hydraulic simulator EPANET 2 to incorporate pressure‐dependent demands. This extension is termed “EPANET‐PDX” (pressure‐dependent extension) herein. The utilization of a continuous nodal pressure‐flow function coupled with a line search and backtracking procedure greatly facilitate the algorithm's convergence rate and robustness. Simulations of real life networks consisting of multiple sources, pipes, valves and pumps were successfully executed and results are presented herein. Excellent modelling performance was achieved for analysing both normal and pressure deficient conditions of the WDNs.

AB - In water distribution networks (WDNs), the available flow at a demand node is dependent on the pressure at that node. When a network is lacking in pressure, not all consumer demands will be met in full. In this context, the assumption that all demands are fully satisfied regardless of the pressure in the system becomes unreasonable and represents the main limitation of the conventional demand driven analysis (DDA) approach to WDS modelling. A realistic depiction of the network performance can only be attained by considering demands to be pressure dependent. This paper presents an extension of the renowned DDA based hydraulic simulator EPANET 2 to incorporate pressure‐dependent demands. This extension is termed “EPANET‐PDX” (pressure‐dependent extension) herein. The utilization of a continuous nodal pressure‐flow function coupled with a line search and backtracking procedure greatly facilitate the algorithm's convergence rate and robustness. Simulations of real life networks consisting of multiple sources, pipes, valves and pumps were successfully executed and results are presented herein. Excellent modelling performance was achieved for analysing both normal and pressure deficient conditions of the WDNs.

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KW - water distribution systems

M3 - Conference contribution book

BT - 12th International Conference on Water Distribution Systems Analysis

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Tanyimboh T, Siew C. Pressure-dependent EPANET extension: pressure-dependent demands. In 12th International Conference on Water Distribution Systems Analysis. 2010