Distribution Uniformity of Multi Stream Multi Trajectory Rotary Nozzles Spaced Below Recommended Distance

摘要

There are irrigation design and field situations where sprinkler spacings do not match conventional head to head spacing. A study was conducted to determine the effect of nozzle spacings at less than normal head to head spacing on distribution uniformity, DU. Also the effects on DU of adjusting and not adjusting the radius screw were measured. Three Multi Stream Multi Trajectory (MSMT) nozzles common in professionally installed systems were selected for this study. Nozzle spacings were 10% and 25% less than normal head to head spacing. Results show DU was basically higher at spacings of 10% and 25% less than head to head spacing for cases of adjusting or not adjusting the radius screw