Evaluating the Application of Automatic Flow Control Valves to Increase the Water Uniformity Distribution in the Drip Irrigation System in Sloping Lands and Modeling by EPANET Software (Case Study: Barajin Park, Qazvin)

Document Type : Research Paper


1 Master of Science in Irrigation and Drainage, Faculty of Agriculture and Natural Resources, Imam Khomeini International University, Qazvin, Iran.

2 Associate Professor, Department of Water Engineering, Faculty of Agriculture and Natural Resources, Imam Khomeini International University, Qazvin, Iran.


This study evaluated a drip-gravity irrigation system implemented in Barajin Park at the north of Qazvin province. In order to carefully examine the existing conditions of the field visit, the effective parameters in the evaluation were measured for all laterals in the selected section, including 13 laterals. The results showed that the water uniformity distribution was unacceptable due to the significant elevation difference. Note that no filtration system was used; hence, it was impossible to use a pressure regulating emitter (PC) because these emitters are sensitive to chemical and physical clogging. To improve the water distribution conditions, applications of 1) using flow control valves, 2) changing the diameter of the pipes, and 3) using two types of conventional drippers (Non-PC) with different scenarios and modeling in EPANET software were investigated.           


Main Subjects

  • Alizadeh, A. 2012. Principles of design of irrigation systems, Volume II: Principles of design of pressurized irrigation systems. Book in Astan Quds Razavi Publications,


  • Bazkiaee, P. Kamkar, B. Amiri, A. Kazemi, H. Rrzayi, M. and Akbarzadeh, S. 2020. Simulation of growth and yield and evaluation of rice production productivity under irrigation management and planting date using Aquacrop model. Journal of Soil and Water Resources Conservation 9(2), 17–34 (in Persian).


  • Farzin, S., Mousavi, S.F., Hassanvand, M.R., Salimi, A.H. and Doostmohammadi, M., 2018. Hydraulic modeling of water supply network of green spaces using EPANET and prediction of hydraulic characteristics using artificial intelligence. Iranian Journal of Irrigation & Drainage12(1), pp.186-198.


  • Ghaderi, k. Javadi, F. Amirkhani, KH. And Sharifi, A., 2012. Optimization of pressure systems using EPANET software. Eleventh national seminar on irrigation and evaporation reduction. Kerman. https://civilica.com/doc/157959 (in Persian).
  • Khorami, M. and Ansari, H., 2019. Evaluation of efficiency and performance of drip irrigation systems in urban green space (Case study of Shahid Bronsi Boulevard, Mashhad). Third National Conference on Coastal Water Resources Management. October 9, 2017, Mazandaran.



  • Merriam, J.L. and J. Keler. 1978. Farm irrigation system evaluation: A guide for management, department of Agriculture Engineering, California, Polytechnic, Science, 13:129-139.


  • Noshadi, M. Qaemi, A., 2012. Technical and hydraulic study of drip irrigation systems in Fars province. Iranian Journal of Irrigation and Drainage 6: 254–264 (in Persian).


  • Qasemzadeh Mojaveri, F. 1991. Evaluation of farm irrigation systems. Book in Astan Quds Razavi Publications, 336p.


  • Rahmeyer, W. and Driskell, L., 1985. Control valve flow coefficients. Journal of Transportation Engineering111(4), pp.358-364.


11- Ramana, G.V., Sudheer, C.V. and Rajasekhar, B., 2015. Network analysis of water distribution system in rural areas using EPANET. Procedia Engineering119, pp.496-505.


12- Zhang, X. and Wang, D., 2015. A flow control device for incompressible fluids. Flow Measurement and Instrumentation41, pp.165-173.

Volume 46, Issue 2
September 2023
Pages 59-73
  • Receive Date: 30 September 2021
  • Revise Date: 07 April 2022
  • Accept Date: 09 April 2022
  • Publish Date: 23 August 2023