Abstract
High-fidelity simulation of a rotary bell atomizer with electrohydrodynamic effects
Highlights
With the world becoming increasingly dependent on automotive means of transportation and motor vehicle production approaching 100 million units per year [1], automobile manufacturers are looking for ways to minimize production costs
An Rotary Bell Atomizers (RBA) is a high speed rotating nozzle that atomizes paint into droplets that are a few micrometers in diameter
We propose a reduced physics configuration that only consists of a static perturbed ligament that undergoes capillary breakup by virtue of the Rayleigh-Plateau instability
Summary
With the world becoming increasingly dependent on automotive means of transportation and motor vehicle production approaching 100 million units per year [1], automobile manufacturers are looking for ways to minimize production costs. In an automobile manufacturing facility, the paint shop can consume up to 70% of the total energy costs [2], demand up to 50% of the electricity and up to 60% of the fossil fuels or heat [3] used in the facility. This makes painting one of the most expensive processes in automobile manufacturing, consuming up to 50% of its total costs [4]. An RBA is a high speed rotating nozzle that atomizes paint into droplets that are a few micrometers in diameter. The high-speed rotating fluid film, on reaching the edge of the bell, exits as multiple ligaments which further atomize into droplets [6]. Atomized droplets, which carry electric charge, move toward the grounded target surface under the influence of the electric field
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