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2010
Conference Paper
Titel
Simulation of the spray coating process using a pneumatic atomizer
Titel Supplements
Influences of operating conditions and target geometries
Abstract
This paper presents the numerical simulation of the spray painting process using a pneumatic atomizer with the help of a computational fluid dynamics code. The droplet characteristics that are necessary for the droplet trajectory calculation were experimentally investigated using different shaping air flow rates. It was found that the droplet size distribution depends on both the atomizing and the shaping air flow rate. The injection model for creating initial conditions of droplets that takes account of the influences of the operating conditions is necessary for the spray painting simulation. Some tests on complicated targets and complex alignments of the atomizer have been carried out to verify the numerical approach. The results confirm the applicability and reliability of the chosen models for the painting process.