Design and Optimization of Fan-Shaped Nozzle Structure Based on CFD

In order to select nozzle reasonably, improve the utilization rate of pesticide and enhance the atomization effect of nozzle, the internal flow field of fan-shaped nozzle with different terminal structure under the same parameters was simulated and analyzed. By using FLUENT software, through the analysis of the velocity and pressure of the internal flow field, three fan-shaped nozzles with different terminal structures are compared. In the case that the three structural parameters of nozzle length, inner cavity diameter and groove angle are consistent, the simulation of round head type, cone type and innovative type is compared. The results show that among the three nozzle structures, the improved innovative nozzle has the best velocity uniformity in the nozzle area, and the speed and pressure changes are more stable. The comprehensive performance has obvious advantages over the other two nozzles, and has better atomization effect and pesticide utilization rate.