CFD simulation and experiment on the flow field of air-assisted ultra-low-volume sprayers in facilities

• DOI: 10.25165/ijabe.v14i2.6013
• Publication Date: 2021-04-03
• Authors: Xinyu Lu; Yan Gong; Dejiang Liu; Wang Guo; Xiao Chen; Xiao Zhang; Qiuhan Liang
• Keywords: Sprayer; Anemometer

In order to explore the performance of B-ULV-616A knapsack sprayer, computational fluid dynamics (CFD) was used simulate air-assisted device, which features an ultra-low-volume electric sprayer. Field experiments were carried out test spraying effects, and KANOMAX anemometer verify simulated results. First, internal external flow fields droplet deposition distribution sprayer established. The results showed that spray device can change airflow speed direction produce a high-speed swirling at outlet device. (maximum 83.5 m/s) generates negative pressure (minimum 0.099 MPa) causes rapid increase in velocity secondary droplets spray, allowing reach longer distance. Then, maximum relative error 20.14%, its average value 9.59%, indicating CFD method is suitable for field analysis Finally, based on greenhouse experiment, found effectively improve rear crop, density 81/cm2; conventional 64/cm2), reduce amount coefficient variation (below 20%) within between regions. Further, it managed pesticide use (by 69.85%) rural non-point source pollution. Keywords: simulation, ultra-low rate, deposition, air-velocity field, error DOI: 10.25165/j.ijabe.20211402.6013

Citation: Lu X Y, Gong Liu D J, Wang G, Chen X, Zhang et al. simulation experiment sprayers facilities. Int J Agric & Biol Eng, 2021; 14(2): 26–34.