Night irrigation reduction for water saving in medium-sized systems

Journal of Irrigation and Drainage Engineering

dc.creatorBievre, Bert De
dc.creatorAlvarado, Andrés
dc.creatorTimbe, Luis
dc.creatorCélleri, Rolando
dc.creatorFeyen, Jan
dc.date2015-06-15T14:59:03Z
dc.date2015-06-15T14:59:03Z
dc.date2003-04
dc.date.accessioned2018-03-14T20:12:44Z
dc.date.available2018-03-14T20:12:44Z
dc.identifierhttp://dspace.ucuenca.edu.ec/handle/123456789/22187
dc.identifierdoi: 10.1061/(ASCE)0733-9437(2003)129:2(108)
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1129489
dc.descriptionIn many medium-sized irrigation systems water is wasted during the night because demand is low and supply is not reduced accordingly. A hydrodynamic model was applied, using MIKE 11 as a software tool, to simulate abrupt discharge changes and their travel times along small irrigation canals. Filling and emptying of the canal were also analyzed. The model was calibrated with data of a field experiment that included startup, positive, and negative surges. A technique was developed to take into account the considerable water losses in the canal. Performance indicators efficiency, adequacy, equity, and dependability, proposed by Molden and Gates in 1990, were redefined using the concept of usefully delivered discharge. The newly defined indicators were consequently used to find the gate operation scenario that meets optimally the target day and night discharges. It was found that it is feasible to implement night delivery reduction. The calibrated model was used to develop guidelines for the operation of the canal with daily flow variation, resulting in considerable water savings during the night.
dc.descriptionvol. 129; no. 2
dc.formatapplication/pdf
dc.languageeng
dc.rightsopenAccess
dc.rightshttp://creativecommons.org/licenses/by-nc-sa/3.0/ec/
dc.rightsinfo:eu-repo/semantics/openAccess
dc.rightshttp://creativecommons.org/licenses/by-nc-sa/3.0/ec/
dc.sourceinstname:Universidad de Cuenca
dc.sourcereponame:Repositorio Digital de la Universidad de Cuenca
dc.subjectHYDRAULIC MODELS
dc.subjectIRRIGATION PRACTICES
dc.subjectHYDRAULIC PERFORMANCE
dc.subjectPERFORMANCE EVALUATION WATER
dc.subjectPERFORMANCE EVALUATION
dc.subjectMODELLING
dc.subjectHYDRAULIC SYSTEMS
dc.subjectHYDRODYNAMICS
dc.titleNight irrigation reduction for water saving in medium-sized systems
dc.titleJournal of Irrigation and Drainage Engineering
dc.typeArtículos de revistas


Este ítem pertenece a la siguiente institución