Effect of Sprinkler Head Geometrical Parameters on Hydraulic Performance of Fluidic Sprinkler
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Volume 138, Issue 11
Abstract
A new prototype of fluidic sprinkler is proposed in this paper. To determine the discharge coefficient (A), pattern radius (B), sprinkler rotation speed (C), droplet diameter distribution (D), and the radial application pattern (E), several sprinkler heads were specially fabricated to carry out the experiments. After systematic experiments were conducted with the 10PXH fluidic sprinkler, the results showed that the inner contraction angle influenced A, B, C, and E, and the geometrical parameters of offset length and working area length influenced E. The operating pressure influenced B, C, D, and E. The reductions in the radius exactly corresponded to the reduction of the discharge coefficient. As the inner contraction angle increased from 10° to 70°, the pattern radius at 250 kPa decreased from 10.7 to 8.4 m and the discharge coefficient decreased from 0.9 to 0.67. The time per rotation and the droplet diameter distribution were analyzed, respectively. The radial application pattern at 250 kPa for all nozzles was established. For the square configurations, the smaller the lateral spacing, the higher the uniformity.
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Acknowledgments
The authors are greatly indebted to the National Natural Science Foundation of China (No. 51109098), Program for National Hi-tech Research and Development of China (863 Program, No. 2011AA100506), Program for China Postdoctoral Science Foundation (No. 20110491357), and Open Fund for Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education & Jiangsu Province, Jiangsu University (No. NZ201008). We furthermore like to thank Frank Dwomoh of the Research Center of Fluid Machinery Engineering and Technology, Jiangsu University for his valuable comments on writing in English.
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Published In
Journal of Irrigation and Drainage Engineering
Volume 138 • Issue 11 • November 2012
Pages: 1019 - 1026
Copyright
© 2012 American Society of Civil Engineers.
History
Received: Oct 4, 2011
Accepted: Apr 24, 2012
Published online: Apr 28, 2012
Published in print: Nov 1, 2012
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