Published 12 issues per year
ISSN Print: 1044-5110
ISSN Online: 1936-2684
Indexed in
ENTRAINED AIR AND DROPLET VELOCITIES PRODUCED BY AGRICULTURAL FLAT-FAN NOZZLES
ABSTRACT
Entrained air velocities, caused by the movement of droplets from an agricultural flat-fan nozzle through the air, have been determined in vertical and radial directions within the spray by measuring the velocities of small droplets used as tracers for air movement. The distributions of droplet volume median diameter and mean liquid velocity within the spray were also measured using a PMS laser imaging probe. The spray volume distribution in a horizontal plane below the nozzle was recorded.
The radial air velocity component declined with distance from the nozzle, r, and with angle from the centerline, θ. Liquid velocity, mean droplet size, and spray volume distribution also varied with r and θ. A model developed to predict the entrained air velocities was adapted in order to be compared with the experimental results. The model predicts well the variation of entrained air velocity with r, but the measured velocity declines more quickly with θ than with the model.
-
Zhang Haibin, Bai Bofeng, Liu Li, Sun Huijuan, Yan Junjie, Mixing of Hollow-Cone Spray with a Confined Crossflow in Rectangular Duct, AIAA Journal, 51, 3, 2013. Crossref
-
Elliott Peter T., Mahli David M., Glass J. Edward, Spray applications: Part IV. Compositional influences of HEUR thickeners on the spray and velocity profiles of waterborne latex coatings, Journal of Coatings Technology and Research, 4, 4, 2007. Crossref
-
Butler Ellis M.C., Swan T., Miller P.C.H., Waddelow S., Bradley A., Tuck C.R., PM—Power and Machinery, Biosystems Engineering, 82, 3, 2002. Crossref
-
Liu Qing, Cooper S.E., Qi Lijun, Fu Zetian, Experimental Study of Droplet Transport Time between Nozzles and Target, Biosystems Engineering, 95, 2, 2006. Crossref
-
Tuck C.R., Ellis M.C.Butler, Miller P.C.H., Techniques for measurement of droplet size and velocity distributions in agricultural sprays, Crop Protection, 16, 7, 1997. Crossref
-
Zhang Haibin, Bai Bofeng, Liu Li, Sun Huijuan, Yan Junjie, Experimental study of the mixing of two impinging pressure-swirl sprays in crossflow, Experimental Thermal and Fluid Science, 49, 2013. Crossref
-
Zhang Haibin, Bai Bofeng, Liu Li, Sun Huijuan, Yan Junjie, Droplet dispersion characteristics of the hollow cone sprays in crossflow, Experimental Thermal and Fluid Science, 45, 2013. Crossref
-
Zhang Haibin, Bai Bofeng, Temperature Patterns of Air Crossflow with Hollow-Cone Spray Evaporation, AIAA Journal, 54, 10, 2016. Crossref
-
Abdelmotalib Hamada Mohmed, Dafsari Reza Alidoost, Seung-Hwa Yu, Lee Jeekeun, Computational study of internal flow characteristics of the air induction nozzle, International Journal of Mechanical Sciences, 204, 2021. Crossref
-
Asgarian Ali, Morales Rodolfo, Bussmann Markus, Chattopadhyay Kinnor, Water atomisation of molten metals: a mathematical model for a water spray, Powder Metallurgy, 65, 1, 2022. Crossref
-
Miller Paul, Spray drift, in Pesticide Application Methods, 2014. Crossref