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结合超高地隙喷雾机实际结构,应用ANSYS Fluent软件,采用标准k-ε湍流模型、离散相模型与Couple算法,建立了超高地隙喷杆喷雾机风幕式气流辅助施药技术雾滴沉积飘移分布模型,对飘移率与各影响因素之间的关系进行了仿真研究,确定了不同风机转速下雾滴飘移率与其各影响因素之间的函数关系,并对模拟研究结果的准确性进行了试验验证。研究结果表明,所建模拟模型能够比较准确地反映风幕系统各作业参数对雾滴飘移率的影响规律,其中辅助气流喷射角度、喷头水平安装位置、自然风风速、风机转速,以及辅助气流喷射角度和自然风风速、辅助气流喷射角度和风机转速、喷头水平安装位置和自然风风速、自然风风速和风机转速的交互作用都对飘移率有显著的影响。
Combined with the actual structure of ultra-high clearance sprayer, the application of ANSYS Fluent software, standard k-ε turbulence model, discrete phase model and couple algorithm, established the curtain air flow assisted spraying technology of ultra-high clearance sprayer. Droplet deposition drift Distribution model to simulate the relationship between the drift rate and various influencing factors, and to determine the function of the droplet drip rate under various fan speeds as a function of its influencing factors, and to test the accuracy of the simulation results verification. The results show that the simulation model can accurately reflect the influence law of the operating parameters of the air curtain system on the drifting rate of the drip curtain. Among them, the auxiliary air jet angle, the nozzle horizontal installation position, the natural wind speed, the fan speed and the auxiliary air jet Angle and natural wind speed, auxiliary air jet angle and fan speed, nozzle horizontal installation position and natural wind speed, natural wind speed and fan speed interaction have a significant impact on the drift rate.