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Open AccessArticle

Simulation and Verification of Hydraulic Performance and Energy Dissipation Mechanism of Perforated Drip Irrigation Emitters

by 1,2, 1,2,*, 1,2,*, 1,2 and 3
1
College of Water Resources and Architectural Engineering, Shihezi University, Shihezi 832000, China
2
Key Laboratory of Modern Water-Saving Irrigation of Xinjiang Production and Construction Corps, Shihezi University, Shihezi 832000, China
3
College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, China
*
Authors to whom correspondence should be addressed.
Water 2021, 13(2), 171; https://doi.org/10.3390/w13020171
Received: 23 November 2020 / Revised: 27 December 2020 / Accepted: 8 January 2021 / Published: 13 January 2021
(This article belongs to the Special Issue Water Conservation in Irrigated Agricultural Systems)
Drip irrigation has become an application trend of water-saving irrigation technology due to its excellent water-use efficiency. However, the energy dissipation form of the commonly used labyrinth channel is relatively simple, and the corresponding energy dissipation mechanism research is inadequate. This article proposes a new kind of channel structure of drip irrigation emitters based on the structure of scalariform perforation plates in plant xylem vessels. We establish a total of 16 sets of orthogonal structure schemes. Using numerical simulation and physical experiments, the hydraulic performance and energy dissipation mechanism of the perforated drip irrigation emitters (PDIE) are studied. The results show that the flow index of PDIE is 0.4665–0.5266. The hydraulic performance of PDIE in the high-pressure zone is the best, and the flow index is 0.4665–0.5046. As the pressure increases, the velocity of the flow of the upper perforation increases rapidly, the flow ratio decreases, the flow index decreases, and the hydraulic performance improves. To further verify the energy dissipation mechanism, a lower flow ratio and a better hydraulic performance were obtained through appropriately expanding the upper part of the upper perforation inlet to the channel boundary. The research sheds new insights for optimizing the hydraulic performance of PDIE. Results reported here provide a theoretical basis for the structural design of drip irrigation emitters and the energy dissipation mechanism research. View Full-Text
Keywords: perforated drip irrigation emitters; flow rate; flow ratio; hydraulic performance; energy dissipation mechanism; numerical methods perforated drip irrigation emitters; flow rate; flow ratio; hydraulic performance; energy dissipation mechanism; numerical methods
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MDPI and ACS Style

Xing, S.; Wang, Z.; Zhang, J.; Liu, N.; Zhou, B. Simulation and Verification of Hydraulic Performance and Energy Dissipation Mechanism of Perforated Drip Irrigation Emitters. Water 2021, 13, 171. https://doi.org/10.3390/w13020171

AMA Style

Xing S, Wang Z, Zhang J, Liu N, Zhou B. Simulation and Verification of Hydraulic Performance and Energy Dissipation Mechanism of Perforated Drip Irrigation Emitters. Water. 2021; 13(2):171. https://doi.org/10.3390/w13020171

Chicago/Turabian Style

Xing, Shaobo; Wang, Zhenhua; Zhang, Jinzhu; Liu, Ningning; Zhou, Bo. 2021. "Simulation and Verification of Hydraulic Performance and Energy Dissipation Mechanism of Perforated Drip Irrigation Emitters" Water 13, no. 2: 171. https://doi.org/10.3390/w13020171

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