Abstract
In order to improve pesticide application efficiency and reduce environmental pollution, precise pesticide application has become the core concept of forestry pest control. In this paper, based on the precise target research requirements of the pesticide liquid of plant protection UAV, the VOF model of droplet impact was established. The two-phase flow model was used to simulate the three processes (contact, spread and contraction) of droplet impact on bark, and analyse the state of droplet impact on bark surface at different speeds and heights. Through the study, the behaviour state of fog droplets in different conditions can be obtained, which can maximize the use of liquid medicine, reduce environmental pollution, and provide a new research method for fog droplets deposition on tree trunk surface.
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