Design of paired laterals on uniformly sloping fields

View/ Open
Issue date
2018-03-30Suggested citation
Monserrat Viscarri, Joaquín;
Barragán Fernández, Javier;
Cots Rubió, Lluís;
.
(2018)
.
Design of paired laterals on uniformly sloping fields.
Journal of Irrigation and Drainage Engineering, 2018, vol. 144, núm. 6, p. 1-14.
https://doi.org/10.1061/(ASCE)IR.1943-4774.0001308.
Metadata
Show full item recordAbstract
Knowledge of the maximum length for paired drip laterals facilitates the economic optimization of micro-irrigation systems. The methodologies proposed to date have been based on complicated mathematical procedures that make certain restrictive assumptions, such as fixed pressure head variation, and disregard emitter flow variation; this has limited their application. The methodology presented in this study, which assumes the basic equations for the analysis of a drip lateral based on the energy gradient line, allows evaluating the maximum length of paired drip laterals with non-pressure compensating emitters, when diameter and slope are known and pipe is laid on a uniformly sloping field. The results show that the maximum length of a paired drip lateral with given diameter is almost constant for any slope, although there is a maximum slope above which the lateral pipe diameter needs to be reduced. The maximum slope can be obtained when the ratio between the difference in elevation and the head loss due to friction of the downhill lateral exceeds one. A method is also proposed to determine the lateral pipe diameter for a fixed length.
Is part of
Journal of Irrigation and Drainage Engineering, 2018, vol. 144, núm. 6, p. 1-14European research projects
Collections
Related items
Showing items related by title, author, creator and subject.
-
Water distribution uniformity and scheduling in micro-irrigation systems for water saving and environmental protection
Barragán Fernández, Javier; Cots Rubió, Lluís; Monserrat Viscarri, Joaquín; López Alonso, Raúl; Wu, I.P. (Elsevier, 2010)Micro-irrigation can apply water with high uniformity. However, uniformity alone is not sufficient to achieve the goal of irrigation. Irrigation scheduling is equally important in micro-irrigation systems. The significance ... -
Aplicabilidad del riego a pulsos en tablares
Monserrat Viscarri, Joaquín; Casalí Sarasibar, Javier; Tilló, J.; Cots Rubió, Lluís; Barragán Fernández, Javier (Universidad Politécnica de Valencia, 1997)Se presentan ocho ensayos comparativos entre riego a pulsos y riego continuo en tablares, para variadas condiciones de parcelas y variables de riego. Se ha analizado el tiempo de aplicación para llegar al final de la ... -
Conveyance efficiency in the Urgell canals (Lleida, Spain)
Cots Rubió, Lluís; Barragán Fernández, Javier; Monserrat Viscarri, Joaquín (Fundació Universitat de Lleida, 2014)