Effect of Nozzle Shape and Pressure on Water Distribution

Abstract

Sprinklers with circular and noncircular nozzles were tested to determine the water application patterns. Circular nozzles usually produced greater wetted radii than noncircular nozzles. Noncircular nozzles have the advantages of providing an acceptable water application pattern over the entire precipitation profile at low operating pressure. Noncircular nozzles (square, rectangular and triangular) were compared to circular nozzle for water application profiles with 100% overlapping. The over irrigation percentage was higher for circular nozzle than all shapes of noncircular nozzles.

Effect of Sprinkler Riser Characteristics on Application Uniformity

“…Duncan's statistical test was used to examine differences between the means of the uniformity coefficients. Single sprinkler distribution profiles of the overlapped data were calculated El-Berry et al (2009). The distributions of the cumulative irrigations were divided by the total number of relevant tests to give a mean grid distribution.…”