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
The study investigates the atomization process of a pneumatic paint atomizer by measuring droplet size and velocity distributions within a liquid paint spray. Measurements were performed at different axial positions, allowing a detailed analysis of how droplet size, velocity, number density, and local mass flux vary throughout the spray. Based on these measurements, a mathematical description of the spray structure is proposed.
Spray characterization is a key step in many industrial applications, including automotive painting, spray drying, and pharmaceutical coating. In this experiment, the spray was generated using a GunPainter system (LacTec GmbH, Germany) equipped with a pneumatic atomizer. The system enables precise control of atomization air, shaping air, and liquid flow rate, while a traversing mechanism allows spatially resolved measurements of the spray.
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.Stay in the loop with real-time updates from stadiums, arenas, and tracks around the globe. From major league clashes to underdog triumphs, we bring you the most exciting headlines in sports.