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- Title
Visualization of the evolution of bubbles in the spray sheet discharged from the air‐induction nozzle.
- Authors
Gong, Chen; Li, Dongyang; Kang, Can
- Abstract
BACKGROUND The air‐induction nozzle greatly reduces drift potential by increasing spray droplet size compared with a standard flat‐fan nozzle. The current study aims to reveal the mechanism behind the formation of large droplets through the air‐induction nozzle from the aspect of bubble evolution in the spray sheet. RESULTS: Bubble break‐up leads directly to the formation of perforations because large bubbles reach both sides of the spray sheet. The surface disturbance induced by bubble break‐up modulates spray sheet thickness, which indirectly leads to the generation of perforations. Compared with the spray pressure, nozzle configuration has a more significant effect on both the volumetric flow rate of intake air and the thickness of the spray sheet. As the nozzle is changed from ID‐120‐01 to ID‐120‐05, the volumetric flow rate of intake air increases by 801.30% at a spray pressure of 0.3 MPa, whereas spray sheet thickness increases by 412.50% at a radial distance of 10 mm. CONCLUSION: Bubble break‐up is the main reason for the generation of perforations within an air‐induction nozzle, leading to early break‐up of the spray sheet and the production of large spray droplets. Bubble break‐up can be effectively controlled by modifying the nozzle configuration.
- Subjects
VISUALIZATION; SPRAY nozzles; NOZZLES; BUBBLES
- Publication
Pest Management Science, 2022, Vol 78, Issue 5, p1850
- ISSN
1526-498X
- Publication type
Article
- DOI
10.1002/ps.6803