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Numerical Simulation of a Coating Sprayer Capable of Producing Controllable Paint Droplets
Technical Paper
2015-01-0737
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Lack of a precise control over paint droplets released from current coating sprayers has motivated this study to develop an atomizer capable of generating a uniform flow of mono-dispersed droplets.
In the current study, a numerical investigation based on CFD incorporating volume of fluid (VOF) multiphase model has been developed to capture the interface between air and paint phases for a typical atomizer equipped with piezoelectric actuator. Effects of inlet flow rate and actuator frequency on ejected droplets' characteristics, droplet diameter and their successive spacing are studied in detail. It will be shown that for a determined flow rate of paint, there is an optimum actuator frequency in which droplet size is minimum. Besides, there exists a direct relationship between the inlet paint velocity and obtained optimal actuator frequency.
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Poozesh, S., Akafuah, N., and Saito, K., "Numerical Simulation of a Coating Sprayer Capable of Producing Controllable Paint Droplets," SAE Technical Paper 2015-01-0737, 2015, https://doi.org/10.4271/2015-01-0737.Also In
References
- Hicks PG , Senser DW Simulation of Paint Transfer in an Air Spray Process Journal of Fluids Engineering 1995 117 713 9
- Plesniak MW , Sojka PE , Singh AK Transfer efficiency for airless painting systems JCT research 2004 1 137 45
- McCarthy J , James E ., Senser DW Numerical model of paint transfer and deposition in electrostatic air sprays 2006 16 195 222
- Ahmed M , Youssef M Influence of spinning cup and disk atomizer configurations on droplet size and velocity characteristics Chemical Engineering Science 2014 107 149 57
- Xing Lin-lin , Glass J. Edward , and Fernando Raymond H. Parameters influencing the spray behavior of waterborne coatings Journal of Coatings Technology 1999 71 890 37 50
- Domnick J , Yang Z , Ye Q Simulation of the Film Formation at a High-Speed Rotary Bell Atomizer used in the Automotive Spray Painting Processes 22nd Annual Conference of ILASS-Europe on Liquid Atomization and Spray Systems 2008
- Teng H , Kinoshita CM , Masutani SM Prediction of droplet size from the breakup of cylindrical liquid jets International Journal of Multiphase Flow 1995 21 129 36
- Chen , Alvin U. , and Basaran Osman A. A new method for significantly reducing drop radius without reducing nozzle radius in drop-on-demand drop production Physics of fluids 2002 14 L1 L4