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雾化与喷雾
影响因子: 1.262 5年影响因子: 1.518 SJR: 0.814 SNIP: 1.18 CiteScore™: 1.6

ISSN 打印: 1044-5110
ISSN 在线: 1936-2684

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雾化与喷雾

DOI: 10.1615/AtomizSpr.2015010791
pages 643-656

NUMERICAL AND EXPERIMENTAL STUDY OF SPRAY COATING USING AIR-ASSISTED HIGH-PRESSURE ATOMIZERS

Qiaoyan Ye
Fraunhofer Institute for Manufacturing Engineering and Automation, Nobelstrasse 12, 70569 Stuttgart, Germany
B. Shen
University Stuttgart, Nobelstrasse 12, 70569 Stuttgart, Germany
O. Tiedje
Fraunhofer Institute for Manufacturing Engineering and Automation, Nobelstrasse 12, 70569 Stuttgart, Germany
T. Bauernhansl
Fraunhofer Institute for Manufacturing Engineering and Automation, Nobelstrasse 12, 70569 Stuttgart, Germany
Joachim Domnick
Hochschule Esslingen, University of Applied Sciences, Germany

ABSTRACT

Airless and air-assisted high-pressure spray guns are widely used in the spray painting industry. The present contribution summarizes ongoing investigations on the spray painting processes of these two atomizers using real paint material. Atomization processes under airless and air-assisted conditions were experimentally studied by measuring droplet size distributions and droplet velocities using a Spraytec Fraunhofer-type particle sizer and laser-Doppler anemometry. A computational fluid dynamics code was applied to calculate the flow field and the droplet trajectories. The measured and calculated film thickness distributions on the substrate were compared. The experimental and simulation results provided the necessary information for understanding the painting process using airless and air-assisted systems and for improving the performance of these atomizers.


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