Performance of selected agricultural spray nozzles using particle image velocimetry

Wang, S., Dorr, G. J., Khashehchi, M. and He, X. (2015) Performance of selected agricultural spray nozzles using particle image velocimetry. Journal of Agricultural Science and Technology, 17 3: 601-613.

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Author Wang, S.
Dorr, G. J.
Khashehchi, M.
He, X.
Title Performance of selected agricultural spray nozzles using particle image velocimetry
Journal name Journal of Agricultural Science and Technology   Check publisher's open access policy
ISSN 1680-7073
2345-3737
Publication date 2015
Sub-type Article (original research)
Open Access Status File (Publisher version)
Volume 17
Issue 3
Start page 601
End page 613
Total pages 13
Place of publication Tehran, Iran
Publisher Tarbiat Modares University
Collection year 2016
Language eng
Abstract The aim of the present study was to investigate the influence of nozzle configurations on spray drift and explain the influences using several atomization characteristics (length of spray sheet, spray angle, velocity distribution of flow field, fluctuation of velocity, and droplet size). Nozzles manufactured by one company (Lechler GmbH, Germany) were tested by spraying local tap water in a wind tunnel at an operating pressure of 0.3 MPa and under room temperature. The nozzles tested were compact air-induction flat fan nozzles (IDK120-02, IDK120-03), standard flat fan nozzles (ST110-02, ST110-03), and hollow-cone swirl nozzles (TR80-02, TR80-03). The atomization process was recorded using a Particle Image Velocimetry (PIV) system, droplet size was measured by a Sympatec Helos laser-diffraction particle-size analyzer, and spray drift was evaluated in a wind tunnel with deposition measured using a calibrated fluorometer (Turner-Sequoia model 450). Results showed that spray drift was significantly different among nozzle types (P<0.0005) and that nozzle configurations influenced breakup length, spray angle, droplet size, and velocity. Nozzles producing larger droplet sizes had lower velocity. Smaller droplets were produced when longer and wider spray sheets were produced. Compared to ST and TR nozzles, IDK nozzles started to breakup in the center of the liquid sheet, producing droplets with larger diameter, lower velocity, and less velocity fluctuation. The IDK nozzle is a good choice for low spray drift at higher wind speeds.
Keyword Atomization
Droplet size
Droplet velocity
Particle image velocime
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
School of Agriculture and Food Sciences
Official 2016 Collection
 
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