Droplet generation and characterization using a piezoelectric droplet generator and high speed imaging techniques

被引：17

作者：

Minov, Sofija Vulgarakis ^{[1
,2
]}

Cointault, Frederic ^{[2
]}

Vangeyte, Jurgen ^{[1
]}

Pieters, Jan G. ^{[3
]}

Nuyttens, David ^{[1
]}

机构：

[1] Inst Agr & Fisheries Res ILVO, Technol & Food Sci Unit, B-9820 Merelbeke, Belgium

[2] Agrosup Dijon, UMR Agroecol, F-21079 Dijon, France

[3] Univ Ghent, Fac Biosci Engn, Dept Biosyst Engn, B-9000 Ghent, Belgium

来源：

CROP PROTECTION | 2015年 / 69卷

关键词：

Piezoelectric droplet generator; DOD mode; Continuous mode; High speed imaging technique; SPRAY DRIFT; SYSTEM; SIZE; FABRICATION; DEPOSITION; RETENTION; DELIVERY; IMPACT;

D O I：

10.1016/j.cropro.2014.11.012

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

Accurate spray (droplet) characterization helps in the better understanding of the pesticide spray application process. The goal of this research was to evaluate the characteristics of a single droplet generated using a piezoelectric single droplet generator in 2 modes: Droplet-On-Demand (DOD) and continuous with 4 different orifice sizes. The droplet generator can produce a single droplet, or a continuous stream of uniformly sized droplets. Using a high speed imaging system and image processing algorithms, the effects of pulse width and pulse amplitude in DOD mode and of frequency and pulse amplitude in continuous mode on droplet characteristics (droplet size, droplet velocity and inter droplet spacing) were investigated for different orifice sizes. The system was able to produce droplet diameters within the range from 134.1 to 461.5 mu m in DOD, and from 167.2 to 458.6 mu m in continuous mode. In addition, droplet velocities ranged from 0.08 to 1.8 m/s in DOD mode and from 1.8 to 4.7 m/s in continuous mode. Validation using a droplet weighing method showed good agreement with the droplet image analysis results. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：18 / 27

页数：10

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