Turbulent flow of water in a narrow gap of an emulsifier is investigated experimentally using micro-PIV (micro Particle Image Velocimetry) technique and compared with numerical predictions performed using the commercial code Fluent. The purpose of the investigations is to develop a procedure for well-controlled generation of mono-disperse suspension of micro droplets. These droplets will form a matrix for collection of nano-particles into well-structured configuration [1]. The micro-flow measurements are based on epi-fluorescence illumination and high-speed imaging. The experimental data are compared with the numerical results obtained using both turbulent and laminar flow models. It was found that, due to small channel dimensions and very small flow development length, the turbulent energy dissipation takes place mainly in the gap and shortly behind it. Very low amount of oil-phase fraction in investigated emulsions justifies us to use mean energy dissipation estimated for pure water to predict mean diameter of oil droplets. These predictions are validated using experimental data for the emulsion.
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ASME 4th International Conference on Nanochannels, Microchannels, and Minichannels
June 19–21, 2006
Limerick, Ireland
Conference Sponsors:
- Nanotechnology Institute
ISBN:
0-7918-4760-8
PROCEEDINGS PAPER
Turbulent Flow in a Micro-Channel Available to Purchase
Tomasz A. Kowalewski,
Tomasz A. Kowalewski
Polish Academy of Sciences, Warsaw, Poland
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Slawomir Blonski,
Slawomir Blonski
Polish Academy of Sciences, Warsaw, Poland
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Piotr M. Korczyk
Piotr M. Korczyk
Polish Academy of Sciences, Warsaw, Poland
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Tomasz A. Kowalewski
Polish Academy of Sciences, Warsaw, Poland
Slawomir Blonski
Polish Academy of Sciences, Warsaw, Poland
Piotr M. Korczyk
Polish Academy of Sciences, Warsaw, Poland
Paper No:
ICNMM2006-96090, pp. 787-794; 8 pages
Published Online:
September 15, 2008
Citation
Kowalewski, TA, Blonski, S, & Korczyk, PM. "Turbulent Flow in a Micro-Channel." Proceedings of the ASME 4th International Conference on Nanochannels, Microchannels, and Minichannels. ASME 4th International Conference on Nanochannels, Microchannels, and Minichannels, Parts A and B. Limerick, Ireland. June 19–21, 2006. pp. 787-794. ASME. https://doi.org/10.1115/ICNMM2006-96090
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