Analysis of pneumatic atomizer spray profiles_中国颗粒学会

Analysis of pneumatic atomizer spray profiles_中国颗粒学会

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Partic. vol. 29 pp. 80-85 (December 2016)
doi: 10.1016/j.partic.2015.12.002

Analysis of pneumatic atomizer spray profiles

Walter Schäfer^{a, *}, Simon Rosenkranz^{a, c, d}, Felix Brinckmann^b, Cameron Tropea^c

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WS@AOM-Systems.com

Highlights

• Time-shift technique was used to measure droplet size and velocity distributions in a spray. • Based on measurement data, SR-Matrix method was introduced to describe spray profiles in xz-plane. • The matrix can be used to control the quality of the atomizer and the atomization products.

Abstract

Our objective is to analyze the atomization processes of a pneumatic atomizer by measuring the size and velocity distributions of droplets in a liquid paint spray. The droplet size and velocity distributions have been determined at different axial positions in the spray; a mathematical description of how these quantities vary throughout the spray is then proposed. Additionally, the relative number density of droplets and the relative local mass flux are estimated.

Graphical abstract

Keywords

Pneumatic atomizer; Spray; Measurement; Droplet size profile; Droplet velocity profile; Time-shift