Abstract A wind tunnel was built with an air speed in the range 0-6 m/s. The droplets containing fluorescein sodium were collected by carbon fiber rods in the vertical and horizontal directions. The content of fluorescein sodium was measured by using fluoremeter. The SPSS software was used to analyze influences of spray parameters and their interactions on spray drift. The results showed that nozzle type, pressure, spray medium and wind speed had a significant impact on droplet drift deposition. The influence of four experimental factors on the drift deposition from the most important to the least important is as follows: wind speed> nozzle type > spray medium >pressure. There are interactions between spray parameters, especially, spray medium and nozzle type, wind speed and nozzle type, wind speed and spray medium, spray medium and nozzle type and wind speed exhibit a substantial interaction, the interactions in the rest spray parameters are insignificant. At all sample positions, deposits on the collectors are reduced at lower wind speeds. However, the droplet drift is intensified as both pressure and wind speed increase. To reduce the drift, we should pay attention to the choice of wind speed in actual field pesticide spray operation. The drift retardant Greenwet 720 can control the drift effectively but the surfactant Greenwet X-100 increases the drift. Investigations into the mechanism of interaction effects of spray parameters on spray droplet drift are of great theoretical and practical significance to decrease of droplet drift, improvement of spraying operational efficiency, enhancement of pest control and reduction of environmental pollution.
ZHOU Rui-Qiong-,,ZHANG Hui-Chun- et al. Interaction effects of spray parameters on pesticide spray droplet drift[J]. Journal of Drainage and Irrigation Machinery Engin, 2019, 37(7): 612-617.
WANG Shujie, XU Chao, YUAN Peng, et al. Hydrodynamic optimization of channelling device for hydro turbine based on lattice Boltzmann method[J]. Com-puters and mathematics with applications, 2011,61(12):3722-3729.
BATTEN W M J, BAHAJ A S, MOLLAND A F, et al. Hydrodynamics of marine current turbines[J]. Renewable energy, 2006,31(2):249-256.
JP2〗JING Xuedong，PAN Xiang，WANG Zetao． Attitude control of pesticide spraying quadrotor aircraft based on fuzzy PID[J]． Journal of drainage and irrigation machinery engineering ，2018，36(5) : 454-460.(in Chinese)
BATTEN W M J, BAHAJ A S, MOLLAND A F, et al. Experimentally validated numerical method for the hydrodynamic design of horizontal axis tidal turbines[J]. Ocean engineering, 2007,34(7):1013-1020.
GRIESANG F，DECARO R A，SANTOS E S，et al. How much do adjuvant and nozzles models reduce the spraying drift? drift in agricultural spraying [J\]. American journal of plant sciences，2017, 8(11):2785-2794.
NUYTTENS D，ZWERTVAEGHER I K A，DEKEYSER D. Spray drift assessment of different application techniques using a drift test bench and comparison with other assessment methods[J\]. Biosystems engineering，2016, 154:14-24.
ZHAO Chen, LIU Yu, CHEN Zhengshou, et al. Design and computation about blades of tidal current turbine[J]. Journal of Zhejiang Ocean University(natural science), 2015,34(1):59-67.(in Chinese)
陈存福. 潮流能水平轴水轮机叶片优化及水动力性能研究[D]. 青岛:中国海洋大学, 2012.
WEN Sheng, LAN Yubin, ZHANG Jiantao, et al. Analysis and experiment on atomization characteristics of ultralowvolume swirl nozzle for agricultural unmanned aviation vehicle[J\]. Transactions of the CSAE, 2016, 32(20): 85－93. (in Chinese)
CARRICA P M, SADAT-HOSSEINI H, STERN F. CFD analysis of broaching for a model surface combatant with explicit simulation of moving rudders and rotating propellers[J]. Computers and fluids, 2012,53(1):117-132.
WANG Lianzhou, GUO Chunyu, SU Yumin, et al. Numerical study of the propeller-induced exciting force under the open freedom condition[J]. Journal of Harbin Engineering University, 2017,38(6):822-828.(in Chinese)
WANG Peng,WANG Zhong,QU Lei. Influence of structure parameters of highpressure jet nozzle on cavitation[J\]. Journal of drainage and irrigation machinery engineering, 2017, 35(12): 1063-1068. (in Chinese)
CHAN W M, GOMEZ R J, ROGERS S.E, et al. Best practices in overset grid generation[C]//Proceedings of the 32nd AIAA Fluid Dynamics Conference and Exhibit. St Louis, USA: AIAA 2002-3191, 2002.
ZHU Zhengyang, ZHANG Huichun, ZHENG Jiaqiang, et al. Performance of an airassisted spinning disc nozzle for bioligical pesticide[J\]. Journal of Zhejing A&F University. 2018，35（2）：361-366.(in Chinese)