Pressure-Discharge Relations with Application to Head-Driven Simulation of Water Distribution Networks

Shirzad, Akbar; Tabesh, Massoud; Farmani, Raziyeh; Mohammadi, Mirali

doi:10.1061/(asce)wr.1943-5452.0000305

Cited by 38 publications

(12 citation statements)

References 10 publications

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“…As rightly pointed out by Todini (2006) it is practically impossible to develop a realistic NHFR. Shirzad et al (2013) carried out experimental study on different faucets to develop NHFRs. They observed that NHFR have same shape for various faucets as predicted by orifice equation and NHFR presented by Wagner et al (1988) better matches the experimental data.…”

Section: Develoments In Node Head-flow Relationshipsmentioning

confidence: 99%

History of Pressure-Dependent Analysis of Water Distribution Networks and Its Applications

Gupta¹

2015

World Environmental and Water Resources Congress 2015

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An analysis that considers a relationship between nodal demand and available nodal pressure to determine the outflow at that node is carried out and mostly referred as pressure-dependent analysis (PDA). Further, not only the outflow but some demand itself such as leakage losses and water demand at sprinklers, faucets etc., are also considered dependent on pressure. Several node head-flow relationships (NHFRs) have been suggested along with the methodologies for their solution in the last three decades. Further, efforts have been also made to carry out PDA by using an efficient DDA based hydraulic network solver, EPANET. The PDA has been used in tackling a variety of problems on water distribution systems such as: assessing reliability, reliability-based design, parameter calibration, vulnerability analysis, placement of isolation valves, water quality analysis, flushing of contaminated water, leakage modelling, and multi-objective evolutionary optimization. This paper provides a complete development in PDA along with future research need.

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Section: Develoments In Node Head-flow Relationshipsmentioning

confidence: 99%

History of Pressure-Dependent Analysis of Water Distribution Networks and Its Applications

Gupta¹

2015

World Environmental and Water Resources Congress 2015

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“…Optimization models were developed to improve equity in supply, resiliency and mechanical reliability of water distribution networks (SOLGI et al, 2016) and to identify some optimal supply schedule (ILAYA-AYZA et al, 2016b), network design (CHANDAPILLAI; SUDHEER; SASEENDRAN, 2012) and rehabilitation scheduling (SHIRZAD; TABESH; ATAYIKIA, 2017). Some hydraulic properties as the variation of Hazen-Williams coefficient and the relation between leakages and IWS were studied by Sashikumar, Mohankumar and Sridharan (2003) and Al-Ghamdi (2011), Shirzad et al (2013) respectively. In water quality topic, Goyal and Patel (2015) developed a methodology to compute the residual chlorine at critical nodes of WSS, Kumpel and Nelson (2013) tested water samples of IWS and continuous supply for contamination and physical-chemical properties, and Bivins et al (2017) and Caprara et al (2009) explored the relationship between IWS and waterborne diseases.…”

Section: Introductionmentioning

confidence: 99%

A ausência de uma definição padrão para sistemas intermitentes de abastecimento de água: Panorama das definições utilizadas na literatura e pelas Agências Reguladoras Brasileiras

Nishimura¹,

Roma²

2018

REGA

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A ausência de uma definição padrão para sistemas intermitentes de abastecimento de água:Panorama das definições utilizadas na literatura e pelas Agências Reguladoras Brasileiras ABSTRACTThere are over 1 billion consumers around the world supplied by intermittent water service, whose operation is hazardous to the public health, can generate inequity in water supply, can reduce infrastructure lifetime, increases the consumers' costs and reduces efficiency of the system. The drawbacks are well-known and despite considerable negative impacts shown before such operation is carrying by several water companies. There is still a considerable gap in the literature that needs to be filled in order to identify a standard definition of intermittent water supply. This paper focus on the identification of how the literature and the Brazilian regulatory agencies are dealing with the lack of a standard definition. A procedure used was a systematic review of definition related to intermittency in the literature and a manual searching process on Brazilian regulatory agencies policies. Our analysis indicated that a missing standard definition of intermittency in water supply results in a wide variety of terms and definitions that are inefficient in the characterization of the problem and are often divergent. We recognize the need for a standard definition of intermittent water supply systems to improve the quality of water services.

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“…Pressure-dependent modelling differs from demand-driven modelling in that pressure-dependent modelling treats the available flow at a demand node as a function of the nodal pressure (e.g. Shirzad et al 2013;Kovalenko et alet al 2014;Ciaponi et al 2015;Abdy Sayyed et al 2015) whereas demand-driven modelling equates the available nodal flow to the demand.…”

Section: Hydraulic Reliability Measuresmentioning

confidence: 99%

Comparison of Surrogate Measures for the Reliability and Redundancy of Water Distribution Systems

Tanyimboh

Siew

Saleh

et al. 2016

Water Resour Manage

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An investigation into the effectiveness of surrogate measures for the hydraulic reliability and/or redundancy of water distribution systems is presented. The measures considered are statistical flow entropy, resilience index, network resilience and surplus power factor. Looped network designs that are maximally noncommittal to the surrogate reliability measures were considered. In other words, the networks were designed by multi-objective evolutionary optimization free of any influence from the surrogate measures. The designs were then assessed using each surrogate measure and two accurate but computationally intensive measures namely hydraulic reliability and pipe-failure tolerance. The results indicate that by utilising statistical flow entropy, the reliability of the network can be reasonably approximated, with substantial savings in computational effort. The results for the other surrogate measures were often inconsistent. Two networks in the literature were considered. One example involved a range of alternative network topologies. In the other example, based on wholelife cost accounting, alternative design and upgrading schemes for a 20-year design horizon were considered. Pressure-dependent hydraulic modelling was used to simulate pipe failures for the reliability calculations.

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Pressure-Discharge Relations with Application to Head-Driven Simulation of Water Distribution Networks

Cited by 38 publications

References 10 publications

History of Pressure-Dependent Analysis of Water Distribution Networks and Its Applications

History of Pressure-Dependent Analysis of Water Distribution Networks and Its Applications

A ausência de uma definição padrão para sistemas intermitentes de abastecimento de água: Panorama das definições utilizadas na literatura e pelas Agências Reguladoras Brasileiras

Comparison of Surrogate Measures for the Reliability and Redundancy of Water Distribution Systems

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