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ISSN Печать: 1044-5110
ISSN Онлайн: 1936-2684
Indexed in
APPLICATION OF PHASE DOPPLER ANEMOMETRY IN PAINT SPRAYS
Краткое описание
For the first time, simultaneous measurements of droplet size and velocity in paint sprays using a phase Doppler anemometer are presented. In agreement with the results of Mie calculations of the scattered light field, first-order refracted light could be used successfully for phase Doppler measurements of two different water-based paints, a laquer and a silver metallic paint. Preliminary measurements, including a comparison with results from digital image processing of stroboscopic light pictures of paint droplets, were performed to demonstrate the accuracy and repeatability of the measurements. Furthermore, comparative measurements in original paint spray guns using an optically homogenous water-sucrose-alcohol solution with similar viscosity and surface tension as the specific paints used herein have shown almost identical droplet size distributions.
Extended measurements in a spray booth were performed, changing a variety of parameters such as gun type, air cap, and paint and airflow rates. Profiles of mean droplet velocity and droplet size were taken at three different distances, 5, 15, and 30 cm downstream from the nozzle. The results have shown some of the expected dependencies of the local droplet velocity and size distributions on global parameters, e.g., an increase of the mean sizes with decreasing airflow.
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Domnick Joachim, Scheibe Andreas, Ye Qiaoyan, The Simulation of the Electrostatic Spray Painting Process with High-Speed Rotary Bell Atomizers. Part I: Direct Charging, Particle & Particle Systems Characterization, 22, 2, 2005. Crossref
-
Im Kyoung-Su, Lai Ming-Chia, Liu Yi, Sankagiri Nasy, Loch Thomas, Nivi Hossein, Visualization and Measurement of Automotive Electrostatic Rotary-Bell Paint Spray Transfer Processes, Journal of Fluids Engineering, 123, 2, 2001. Crossref
-
Miller Richard C., Brooks Gayle F., Effects of Atomization on the Particle Size, Appearance, and Composition of Automotive OEM Basecoats, SAE Technical Paper Series, 1, 1998. Crossref
-
Gan Z.W., Yu S.C.M., Law A.W.K., Hydrodynamic stability of a bubble column with a bottom-mounted point air source, Chemical Engineering Science, 66, 21, 2011. Crossref
-
Gan Z. W., Yu S. C. M., Law A. W. K., PDA measurements in a three-phase bubble column, AIChE Journal, 59, 7, 2013. Crossref
-
Fogliati M., Fontana D., Garbero M., Vanni M., Baldi G., Dondè R., CFD simulation of paint deposition in an air spray process, Journal of Coatings Technology and Research, 3, 2, 2006. Crossref
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Poozesh Sadegh, Akafuah Nelson, Saito Kozo, Effects of automotive paint spray technology on the paint transfer efficiency – a review, Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering, 232, 2, 2018. Crossref
-
Morikita Hiroshi, Taylor Alexander M K P, Application of shadow Doppler velocimetry to paint spray: potential and limitations in sizing optically inhomogeneous droplets, Measurement Science and Technology, 9, 2, 1998. Crossref
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Ye Qiaoyan, Pulli Karlheinz, Numerical and Experimental Investigation on the Spray Coating Process Using a Pneumatic Atomizer: Influences of Operating Conditions and Target Geometries, Coatings, 7, 1, 2017. Crossref
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Tsushima Shohji, Akamatsu Fumiteru, Katsuki Masashi, Mizutani Yukio, Cho Yong-Dae, Accuracy of Phase-Doppler Anemometry in the Presence of Flames, Particle & Particle Systems Characterization, 14, 5, 1997. Crossref
-
Xie Xiaopeng, Wang Yinan, Research on Distribution Properties of Coating Film Thickness from Air Spraying Gun-Based on Numerical Simulation, Coatings, 9, 11, 2019. Crossref
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Chen Yan, Chen Shiming, Chen Wenzhuo, Hu Jun, Jiang Junze, An Atomization Model of Air Spraying Using the Volume-of-Fluid Method and Large Eddy Simulation, Coatings, 11, 11, 2021. Crossref