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Computational fluid dynamics simulation experimental verification and analysis of droplets deposition behaviour on vibrating pear leaves

文献类型： 外文期刊

作者： Cao, Yubin 1 ; Xi, Te 1 ; Xu, Lujiang 1 ; Qiu, Wei 1 ; Guo, Hongbin 1 ; Lv, Xiaolan 2 ; Li, Chao 1 ;

作者机构： 1.Nanjing Agr Univ, Key Lab Intelligent Equipment Agr Jiangsu Prov, Coll Engn, Nanjing 210031, Peoples R China

2.Jiangsu Acad Agr Sci, Nanjing 210014, Peoples R China

关键词： Leaf vibration; Surface properties; Deposition behaviour; Simulation

期刊名称：PLANT METHODS （ 影响因子：5.827； 五年影响因子：5.904 ）

ISSN：

年卷期： 2022 年 18 卷 1 期

页码：

收录情况： SCI

摘要： Background The interaction between canopy and droplets is very important in the process of crop spraying. During the actual air-assisted application process, air-mist flow inevitably disturbs the leaves before droplets reaching them, which will also affect the final deposition state of the droplets on the leaf. Currently, researches on the interaction between droplets and the target leaf surface mainly focuses on the deposition behaviour on the surface of stationary target leaves rather than the dynamic leaves. Therefore, the deposition characteristics after the collision between the droplets and dynamic leaves are important for practical application and worth further study. Results Computational fluid dynamics simulations were performed to characterise the surface roughness, contact angle, and mechanical vibration. The interaction platform between the droplet and the vibrating pear leaf was built for experimental verification under laboratory conditions. The simulation results are in good agreement with the experimental results, which revealed the main reason for the droplet spreading and sliding was the inertial force generated by the relative velocity. It also indicated that the pear leaf vibration can improve the deposition of low-velocity and small droplets, which is different from that of static pear leaves. Conclusion The deposition effect of droplets in vibrating pear leaves was investigated. This study also provides a simulation method for the collision between a vibrating leaf and moving droplets, and provides reference for the study of droplet deposition characteristics under the vibration of fruit trees.

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