Gas-liquid two-phase flows in minichannels and microchannels display a unique flow pattern called ring film flow, in which stable waves of relatively large amplitudes appear at seemingly regular intervals and propagate in the flow direction. In the present work, the velocity characteristics of gas slugs, ring films, and their features such as the gas slug length, flow phenomena and frictional pressure drop for nitrogen-distilled water and nitrogen-30 wt% ethanol water solution have been investigated experimentally. Four kinds of circular microchannels with diameters of 100 μm, 150 μm, 250 μm and 518 μm were used. The effects of tube diameter and physical properties, especially the surface tension and liquid viscosity, on the flow patterns, gas slug length and the two-phase frictional pressure drop have been investigated by using a high speed camera at 6,000 frames per second. The flow characteristics of gas slugs, liquid slugs and the waves of ring film are presented in this paper.
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ASME 2015 13th International Conference on Nanochannels, Microchannels, and Minichannels collocated with the ASME 2015 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems
July 6–9, 2015
San Francisco, California, USA
Conference Sponsors:
- Heat Transfer Division
- Fluids Engineering Division
ISBN:
978-0-7918-5687-1
PROCEEDINGS PAPER
Effect of Tube Diameter on Flow Phenomena of Gas-Liquid Two-Phase Flow in Microchannels Available to Purchase
Hideo Ide,
Hideo Ide
Kagoshima University, Kagoshima, Japan
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Eiji Kinoshita,
Eiji Kinoshita
Kagoshima University, Kagoshima, Japan
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Ryo Kuroshima,
Ryo Kuroshima
Kagoshima University, Kagoshima, Japan
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Takeshi Ohtaka,
Takeshi Ohtaka
Kagoshima University, Kagoshima, Japan
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Yuichi Shibata,
Yuichi Shibata
Ibaraki National College of Technology, Hitachinaka, Japan
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Masahiro Kawaji
Masahiro Kawaji
City College of New York, New York, NY
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Hideo Ide
Kagoshima University, Kagoshima, Japan
Eiji Kinoshita
Kagoshima University, Kagoshima, Japan
Ryo Kuroshima
Kagoshima University, Kagoshima, Japan
Takeshi Ohtaka
Kagoshima University, Kagoshima, Japan
Yuichi Shibata
Ibaraki National College of Technology, Hitachinaka, Japan
Masahiro Kawaji
City College of New York, New York, NY
Paper No:
ICNMM2015-48143, V001T04A051; 7 pages
Published Online:
November 18, 2015
Citation
Ide, H, Kinoshita, E, Kuroshima, R, Ohtaka, T, Shibata, Y, & Kawaji, M. "Effect of Tube Diameter on Flow Phenomena of Gas-Liquid Two-Phase Flow in Microchannels." Proceedings of the ASME 2015 13th International Conference on Nanochannels, Microchannels, and Minichannels collocated with the ASME 2015 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems. ASME 2015 13th International Conference on Nanochannels, Microchannels, and Minichannels. San Francisco, California, USA. July 6–9, 2015. V001T04A051. ASME. https://doi.org/10.1115/ICNMM2015-48143
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