عنوان مقاله [English]
In this study, the effect of wind speed and riser height on the uniformity coefficient of water distribution in Ahvaz city was investigated. Sprinklers were including Zhaleh 3, Zhaleh 5, and Komet with discharges of 2.11, 4 and 3 m3/h and spraying diameters of 30, 40 and 35 m, respectively and riser heights of 1.0, 1.4, 1.8, and 2.2 m under mild to moderate and severe wind speeds in a solid set system with portable sprinklers were investigated. In the mild to moderate wind speed range, increasing in riser height from 100 to 140 cm, the uniformity coefficient of water distribution increased and in riser height rage from 140 to 220 cm, the uniformity coefficient decreased. In the severe wind speed, increasing in riser height from 100 to 220 cm, the uniformity coefficient decreased. The uniformity coefficient of water distribution in the layout of 18 × 18 m for sprinkler Zhaleh 5 was in the highest and for sprinkler Zhaleh 3 was in the lowest value. Finally, the riser height of 140 cm in the mild wind speed range and the riser height of 100 cm in the severe wind speed range were selected as the best riser heights.
10. Heermann DF, Solomon KH (1983) Design and operation of farm irrigation systems. Chapter 5, Efficiency and Uniformity. ASAE, 591-600.
11. Hart WE (1995) Data on distribution and water losses of small sprinkler in winds of 0- 20 miles per hour. Tech. Report project: FE 7-4 No. 663.5 Experiment station H.S.P. A Filed Engineering Department.
12. Khodamoradi J, Moradi S (2009) Technical evaluation of performed sprinkler irrigation system in Sar-Pol-Zahab city. Proceedings of the National Conference on Water Crisis Management. Marvdasht, Iran. [in Persian]
13. Khodadadi Dehkordi D (2014) Impact evaluation of different riser heights on uniformity coefficient in sprinkler irrigation under different wind speeds. Advances in Environmental Biology 8(21): 187-192.
14. Moazed H, Bavi A, Boroomand nasab S, Naseri A, Albaji M (2010) Effects of climatic and hydraulic parameters on water uniformity coefficient in solid set systems. Journal of Applied Science 10(16): 1792-1796.
15. Montazar A (2010) Predicting alfalfa hay production as related to water distribution functions. Irrigation and Drainage 59(2): 189-202.
16. Nazari B, Liaghat A, Parsinejad M (2013) Development and analysis of irrigation efficiency and water productivity indices relationships in sprinkler irrigation systems. International Journal of Agronomy and Plant Production 4(3): 515-523.
17. Rahmatabadi V, Boroomand nasab S, Sakhaeerad H, Bavi A (2012) Evaporation and wind drift losses for two types of sprinklers with one and three nozzles in solid set systems in Ahwaz climate conditions. Iranian Journal of Irrigation and Drainage 2012(4): 265-272. [in Persian with English abstract]
18. Sheikhesmaeili O (2007) Analysis of the Uniformity to Optimize Design in Semi-Portable Sprinkling Irrigation System. Water and Soil Sciences 21(1): 129-139. [in Persian]
19. Salmeron M, Urrego YF, Isla R, Cavero J (2012) Effect of non-uniform sprinkler irrigation and plant density on simulated maize yield. Agricultural water management 113: 1-9.
20. Tarjuelo JM, Ortega JF, Montero J, De Juan JA (2000) Modeling evaporation and drift losses in irrigation with medium size impact sprinklers under semi-arid condition. Agricultural Water Management 43(3): 263-284.
21. Yacoubi S, Zayani K, Slatni A, Playan E (2012) Assessing sprinkler irrigation performance using field evaluation at the Medjerda lower valley of Tunisia. Engineering4(10): 682-691.
22. Younesi A, Bahmani O, Sedghi H (2015) Technical evaluation of efficiency and uniformity coefficients for sprinkler irrigation systems in Hamedan, Iran. Indian Journal of Fundamental and Applied Life Sciences 5(S1): 827-833.