ضریب یکنواختی توزیع آب در سه نوع آبپاش تحت سرعت باد و ارتفاع مختلف پایه آبپاش در شهرستان اهواز
محورهای موضوعی :
مهدی دغاغله
1
(گروه علوم و مهندسی آب، واحد اهواز، دانشگاه آزاد اسلامی، اهواز، ایران)
داود خدادادی دهکردی
2
(گروه علوم و مهندسی آب، واحد اهواز، دانشگاه آزاد اسلامی، اهواز، ایران)
الناز نوروزی
3
(باشگاه پژوهشگران جوان و نخبگان، واحد میانه، دانشگاه آزاد اسلامی، میانه، ایران)
اصلان اگدرنژاد
4
(گروه علوم و مهندسی آب، واحد اهواز، دانشگاه آزاد اسلامی، اهواز، ایران)
کلید واژه: ژاله3, ژاله5, قطر نازل, کمت,
چکیده مقاله :
این پژوهش به منظور بررسی اثر سرعت باد و ارتفاع پایه آبپاش بر ضریب یکنواختی توزیع آب در شهرستان اهواز انجام شد. آب پاش های مورد استفاده شامل ژاله3، ژاله5 و کمت به ترتیب با دبی 11/2، 4 و 3 مترمکعب بر ساعت و قطر پاشش 30، 40 و 35 متر با ارتفاع های پایه آب پاش 0/1، 4/1، 8/1 و 2/2 متر و تحت سرعت های باد ملایم تا متوسط و شدید بودند که در یک سیستم آبیاری بارانی کلاسیک ثابت با آب پاش متحرک مورد بررسی قرار گرفتند. در دامنه سرعت باد ملایم تا متوسط، با افزایش ارتفاع پایه آب پاش از 100 تا 140 سانتیمتر، ضریب یکنواختی آب افزایش و از ارتفاع پایه آبپاش 140 تا 220 سانتیمتر، ضریب یکنواختی کاهش یافت. در سرعت باد شدید با افزایش ارتفاع پایه آبپاش از 100 تا 220 سانتی‎متر، کاهش ضریب یکنواختی آب مشاهده شد. در آرایش 18 × 18 متر، ضریب یکنواختی توزیع آب برای آبپاش ژاله5 بیشترین میزان و برای آبپاش ژاله3 کمترین میزان مشاهده شد. در نهایت، ارتفاع پایه آبپاش 140 سانتی‎متر در سرعت باد ملایم و ارتفاع پایه آبپاش 100 سانتی‎متر در سرعت باد شدید به عنوان مناسب‎ترین ارتفاع پایه آبپاش طرح انتخاب گردیدند.
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.
_||_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.