Analysis of pneumatic atomizer spray profiles--颗粒学报PARTICUOLOGY

Schäfer, W., Rosenkranz, S., Brinckmann, F., & Tropea, C. (2016). Analysis of pneumatic atomizer spray profiles. Particuology, 29, 80-85. https://doi.org/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

a AOM-Systems GmbH, Flughafenstrasse 15, 64347 Griesheim, Germany
b LacTec GmbH, Otto-Hahn-Strasse 6-8, 63110 Rodgau, Germany
c Institute of Fluid Mechanics and Aerodynamics, Technische Universität Darmstadt, Alarich-Weiss-Strasse 10, 64287 Darmstadt, Germany
d Graduate School of Computational Engineering, Technische Universität Darmstadt, Dolivostrasse 15, 64287 Darmstadt, Germany

10.1016/j.partic.2015.12.002

Volume 29, December 2016, Pages 80-85

Received 14 September 2015, Revised 3 December 2015, Accepted 10 December 2015, Available online 10 February 2016, Version of Record 18 November 2016.

E-mail: 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

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