A photographic method for drop characterization in agricultural sprinklers |
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Authors: | Raquel Salvador C Bautista-Capetillo J Burguete N Zapata A Serreta E Playán |
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Institution: | (1) Department of Soil and Water, Aula Dei Experimental Station, CSIC, P.O. Box 202, 50080 Zaragoza, Spain;(2) Dept. Planeación de Recursos Hidráulicos, Universidad Autónoma de Zacatecas., Avda. Ramón López Velarde, 801 Zacatecas, Zacatecas, Mexico;(3) Escuela Politécnica Superior de Huesca, Universidad de Zaragoza., Ctra. de Cuarte, s/n, 22071 Huesca, Spain |
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Abstract: | The characterization of drops resulting from impact sprinkler irrigation has been addressed by a number of techniques. In
this article, a new technique based on low-speed photography (1/100 s) is presented and validated. The technique permits to
directly measure drop diameter, velocity and angle. The photographic technique was applied to the characterization of drops
resulting from an isolated sprinkler equipped with a 4.8 mm nozzle and operating at a pressure of 200 kPa. Sprinkler performance
was characterized from photographs of 1,464 drops taken at distances ranging from 1.5 to 12.5 m. It was possible to analyze
separately the drops emitted by the main jet and those emitted by the impact arm. The proposed technique does not require
specific equipment, although it is labor intensive. |
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