Hydraulic Performance of Fixed Spray Plate Sprinkler under Dynamic Water Pressure

In order to improve the sprinkler application rate and kinetic energy distribution of fixed spray plate sprinkler,a dynamic water pressure based sprinkler test platform was built. A Nelson D3000 nozzle was selected and then the water application rate and kinetic energy distribution in radial direction were tested under both dynamic water pressure in trigonometric type and constant pressure. The results showed that the test platform could well meet the demands of dynamic water pressure. The wetness area of Nelson D3000 nozzle in radial direction increased from 0. 85 ~ 1. 36 m to 2. 55 ~ 4. 42 m. The maximum value of sprinkler application rate was reduced by 67. 6% ~ 78. 4%,and the maximum value of energy density flux was reduced by 52. 9% ~ 71. 6%. Both the sprinkler application rate and kinetic energy distribution of Nelson D3000 nozzle were effectively improved.