Pneumatic flow focusing technology is a relatively new atomizing process first introduced in 1998. A liquid microjet is formed by a high speed co-flowing gas stream when a pressure drop is applied across an orifice. The microjet eventually disintegrates into fine droplets by the perturbing gas downstream of the atomizer exit. Under certain controlled flow regimes the resulting spray demonstrates strong monodispersity. In the present study, the gas flow is numerically modeled by a compressible turbulent flow solver and the liquid jet evolution is captured using Volume of Fluid (VOF) interface tracking method. Jet breakup parameters and drop size distribution are studied for different liquids and flow rates. Results are in good agreement with experiments and theoretical models.
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ASME 2012 Fluids Engineering Division Summer Meeting collocated with the ASME 2012 Heat Transfer Summer Conference and the ASME 2012 10th International Conference on Nanochannels, Microchannels, and Minichannels
July 8–12, 2012
Rio Grande, Puerto Rico, USA
Conference Sponsors:
- Fluids Engineering Division
ISBN:
978-0-7918-4475-5
PROCEEDINGS PAPER
Mono-Disperse Spray Generation by a Flow Focusing Atomizer: A Numerical Study
Babak Samareh,
Babak Samareh
University of Toronto, Toronto, ON, Canada
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Arash Kashani,
Arash Kashani
University of Toronto, Toronto, ON, Canada
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Javad Mostaghimi
Javad Mostaghimi
University of Toronto, Toronto, ON, Canada
Search for other works by this author on:
Babak Samareh
University of Toronto, Toronto, ON, Canada
Arash Kashani
University of Toronto, Toronto, ON, Canada
Javad Mostaghimi
University of Toronto, Toronto, ON, Canada
Paper No:
FEDSM2012-72088, pp. 1245-1251; 7 pages
Published Online:
July 24, 2013
Citation
Samareh, B, Kashani, A, & Mostaghimi, J. "Mono-Disperse Spray Generation by a Flow Focusing Atomizer: A Numerical Study." Proceedings of the ASME 2012 Fluids Engineering Division Summer Meeting collocated with the ASME 2012 Heat Transfer Summer Conference and the ASME 2012 10th International Conference on Nanochannels, Microchannels, and Minichannels. Volume 1: Symposia, Parts A and B. Rio Grande, Puerto Rico, USA. July 8–12, 2012. pp. 1245-1251. ASME. https://doi.org/10.1115/FEDSM2012-72088
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