Multiple-diameter laterals reduce the total cost in microirrigation systems, however, the length of each sublateral should be determined carefully to assure appro-priate performance of emitter flow rates. The most accurate method is the numerical trial and error, which is time-consuming. A series of research efforts have been made to propose simple analytical design procedures. By using the power-law form of the Darcy-Weisbach formula, and equal emitters spacing for the sublaterals, Sadeghi et al. (Sadeghi et al. in J Irrig Drain E-ASCE 142:04,016,020, 2016) extended a previously introduced design solution for one-diameter laterals to tapered laterals. Recently, a simplified procedure to design dual-diameter drip laterals has been intro-duced, providing relative errors in pressure heads less than 0.5%, and allowing to set different Hazen-Williams coefficients, flow rates and emitter interspaces for each sublateral. Moreover, this analytical procedure easily detects the required commer-cial emitter characteristics. The objective of this paper is to experimentally test this solution for drip sublaterals with different lengths, flow rates and emitter interspaces. Drip laterals of a major manufacturer (IRRITEC S.p.A) with diameters of 16 and 20 mm and given emitter characteristics were used in the experiments.
Giorgio Baiamonte, Mustafa Elfahl, Samuel Palermo (2023). Experimental Tests to Validate a Simple Procedure to Design Dual-Diameter Drip Laterals on Flat Fields. In V. Ferro, G. Giordano, S. Orlando, M. Vallone, G. Cascone, S. Porto (a cura di), AIIA 2022: Biosystems Engineering Towards the Green Deal. Improving the Resilience of Agriculture, Forestry and Food Systems in the Post-Covid Era (pp. 15-26). Springer [10.1007/978-3-031-30329-6].
Experimental Tests to Validate a Simple Procedure to Design Dual-Diameter Drip Laterals on Flat Fields
Giorgio Baiamonte
;Mustafa Elfahl;Samuel Palermo
2023-07-01
Abstract
Multiple-diameter laterals reduce the total cost in microirrigation systems, however, the length of each sublateral should be determined carefully to assure appro-priate performance of emitter flow rates. The most accurate method is the numerical trial and error, which is time-consuming. A series of research efforts have been made to propose simple analytical design procedures. By using the power-law form of the Darcy-Weisbach formula, and equal emitters spacing for the sublaterals, Sadeghi et al. (Sadeghi et al. in J Irrig Drain E-ASCE 142:04,016,020, 2016) extended a previously introduced design solution for one-diameter laterals to tapered laterals. Recently, a simplified procedure to design dual-diameter drip laterals has been intro-duced, providing relative errors in pressure heads less than 0.5%, and allowing to set different Hazen-Williams coefficients, flow rates and emitter interspaces for each sublateral. Moreover, this analytical procedure easily detects the required commer-cial emitter characteristics. The objective of this paper is to experimentally test this solution for drip sublaterals with different lengths, flow rates and emitter interspaces. Drip laterals of a major manufacturer (IRRITEC S.p.A) with diameters of 16 and 20 mm and given emitter characteristics were used in the experiments.File | Dimensione | Formato | |
---|---|---|---|
127_(2023)_Baiamonte_et_al.pdf
Solo gestori archvio
Tipologia:
Versione Editoriale
Dimensione
889.93 kB
Formato
Adobe PDF
|
889.93 kB | Adobe PDF | Visualizza/Apri Richiedi una copia |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.