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本文以ZY-1(5.5mm×3.1mm)、ZY-2(7.0mm×3.1mm)双喷嘴摇臂式喷头为研究对象,利用喷洒水滴弹道轨迹运动模型分开模拟了喷头主、副喷嘴水滴的飞行轨迹,并将模拟值与实测值进行了比对,结果表明喷洒水滴飞行距离模拟值与实测值的总体分布趋势相近,尤其对于1.0~2.0mm水滴飞行距离的模拟值与实测值较为接近,模拟效果较好,但对于大直径水滴飞行距离的模拟尚存在较大差异。选择风速、喷头工作压力、流速系数、喷头安装高度、喷射仰角、空气温度作为主要因素进行喷洒水滴飞行轨迹敏感性分析,结果表明,对喷洒水滴飞行轨迹影响程度由大到小依次为流速系数、喷头工作压力、风速、然后是喷射仰角和喷头安装高度,受空气温度的影响最小。
In this paper, the ZY-1 (5.5mm × 3.1mm) and ZY-2 (7.0mm × 3.1mm) double-nozzle rocker-arm nozzles are used as the research objects. The spray-drop trajectory trajectory model is used to simulate the main and auxiliary nozzles The results show that the distribution trend of simulated and measured flight distance of sprayed water droplets is similar, especially the simulated and measured values of the distance of 1.0 ~ 2.0mm water droplets are close to each other, The simulation results are good, but there is a big difference for the simulation of flight distance of large diameter droplet. Select the wind speed, nozzle pressure, flow coefficient, nozzle installation height, jet elevation angle, air temperature as the main factor of the spray droplet trajectory sensitivity analysis, the results show that the impact of spray drop trajectory from descending order of flow coefficient, Sprinkler working pressure, wind speed, then jet elevation and nozzle installation height, the least affected by air temperature.