Sprinkler Performance as Function of Nozzle Geometrical Parameters
Publication: Journal of Irrigation and Drainage Engineering
Volume 122, Issue 4
Abstract
The main design parameter for a square nozzle is its inside contraction angle, and key design parameters for a triangular nozzle include the inside contraction angle and the length-to-width ratio of the triangular orifice. The variation of discharge coefficient, pattern radii, and uniformity of water application as a function of the parameters previously mentioned were studied. For a square nozzle, both the discharge coefficient and the pattern radius decreased with increasing inside contraction angle when the angle exceeded 50°. The suitable inside contraction angle is around 30°. For a triangular nozzle, the influence of the inside contraction angle on its discharge coefficient and water application was insignificant for an angle range of 10°–45°, but the water application profiles from a single sprinkler were sensitive to the orifice height-to-width ratio. A 1.00 height-to-width ratio nozzle discharges more water near the sprinkler and yields a higher uniformity coefficient than other ratio nozzles for a given sprinkler pressure and spacing.
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References
1.
Chen, D., and Wallender, W. W. (1985). “Droplet size distribution and water application with low-pressure sprinklers.”Trans., Am. Soc. of Agric. Engrs. ( ASAE ), 28(2), 511–516.
2.
Christiansen, J. E. (1942). “Irrigation by sprinkling.”Res. Bull. 670. Univ. of California, Calif. Agric. Experiment Station, Berkeley, Calif.
3.
Hall, W. E., and Boving, P. A.(1956). “Non-circular orifice for sprinkler irrigation.”Agric. Engrg., 37(1), 21–29.
4.
Hosoyi, T., and Sugiyama, K. (1979). Hydraulics . Corona Publishing Co., Ltd., Tokyo, Japan (in Japanese).
5.
Li, J., Kawano, H., and Yu, K. (1994). “Droplet size distributions from different shaped sprinkler nozzles.”Trans., Am. Soc. of Agric. Engrs. ( ASAE ), 37(6), 1871–1878.
6.
Seginer, I., Kantz, D., Nir, D., and von Bernuth, R. D. (1992). “Indoor measurement of single-radius sprinkler patterns.”Trans., Am. Soc. of Agric. Engrs. ( ASAE ), 35(2), 523–533.
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Information
Published In
Journal of Irrigation and Drainage Engineering
Volume 122 • Issue 4 • July 1996
Pages: 244 - 247
Copyright
Copyright © 1996 American Society of Civil Engineers.
History
Published online: Jul 1, 1996
Published in print: Jul 1996
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