Water distribution network analysis under fuzzy demands

Spiliotis, M; Tsakiris, G

dc.contributor.author	Spiliotis, M	en
dc.contributor.author	Tsakiris, G	en
dc.date.accessioned	2014-03-01T02:14:54Z
dc.date.available	2014-03-01T02:14:54Z
dc.date.issued	2012	en
dc.identifier.issn	10286608	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/30175
dc.subject	fuzzy approach	en
dc.subject	fuzzy water demand	en
dc.subject	h-solution	en
dc.subject	looped pipe network	en
dc.subject	Newton-Raphson method	en
dc.subject.other	Continuity equations	en
dc.subject.other	Design pressure	en
dc.subject.other	Fuzzy approach	en
dc.subject.other	Fuzzy demand	en
dc.subject.other	h-solution	en
dc.subject.other	Hydraulic heads	en
dc.subject.other	Hydraulic networks	en
dc.subject.other	Input variables	en
dc.subject.other	Multi-criteria	en
dc.subject.other	Optimisations	en
dc.subject.other	Pipe network analysis	en
dc.subject.other	Pipe networks	en
dc.subject.other	Roughness coefficient	en
dc.subject.other	Vulnerable area	en
dc.subject.other	Water demand	en
dc.subject.other	Fuzzy sets	en
dc.subject.other	Newton-Raphson method	en
dc.subject.other	Pipe	en
dc.subject.other	Uncertainty analysis	en
dc.subject.other	Water distribution systems	en
dc.subject.other	distribution system	en
dc.subject.other	fuzzy mathematics	en
dc.subject.other	hydraulic head	en
dc.subject.other	network analysis	en
dc.subject.other	pipeline	en
dc.subject.other	uncertainty analysis	en
dc.subject.other	water demand	en
dc.subject.other	water supply	en
dc.title	Water distribution network analysis under fuzzy demands	en
heal.type	journalArticle	en
heal.identifier.primary	10.1080/10286608.2012.663359	en
heal.identifier.secondary	http://dx.doi.org/10.1080/10286608.2012.663359	en
heal.publicationDate	2012	en
heal.abstract	Looped pipe networks are analysed assuming that all the input variables have precise crisp values. If the hydraulic heads are to be determined, the water demands at the nodes, the diameters and the roughness coefficient of the pipes are considered known and crisp. The paper proposes a fuzzy set approach for addressing the uncertainty of the water demands at the nodes using the Newton-Raphson method for the analysis. In contrast with other studies which adopt the fuzzy approach for analysing the behaviour of the looped hydraulic networks, the proposed methodology exploits the monotony of the continuity equation at the nodes; therefore, the multicriteria optimisation procedure for handling fuzziness is not required. The application of the proposed methodology results in a range of hydraulic heads at the nodes of the network. This information is important for the designer and can be used to identify vulnerable areas of the network which may suffer from design pressure deviations. The proposed methodology is illustrated through a simple looped pipe network analysis exercise. © 2012 Taylor and Francis Group, LLC.	en
heal.journalName	Civil Engineering and Environmental Systems	en
dc.identifier.doi	10.1080/10286608.2012.663359	en
dc.identifier.volume	29	en
dc.identifier.issue	2	en
dc.identifier.spage	107	en
dc.identifier.epage	122	en