High time-resolution flow field measurement in two microchannels with a complex shape is performed by a micro-digital-holographic particle-tracking velocimetry (micro-DHPTV). The first microchannel has a junction that combines the flow of fluid from two inlets into one outlet. In this case, two laminar velocity profiles from the inlet regions merge into one laminar velocity profile. The second microchannel has a convergence region from where a fluid flows into a divergence region. At this region, two recirculation regions appear. Consequently, approximately 250 velocity vectors in both cases can be obtained instantaneously. For a microchannel with the convergence region, the two recirculation regions that appear at the divergence point are captured from a three-dimensional vector field, with which the axes of recircular vortices have some alignment. The reason why we can observe this phenomenon is that a three-dimensional velocity, including the depth direction, can be obtained by micro-DHPTV.
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Measurements of Three-Dimensional Flow in Microchannel With Complex Shape by Micro-Digital-Holographic Particle-Tracking Velocimetry
Shin-ichi Satake,
Shin-ichi Satake
Mem. ASME
Department of Applied Electronics,
Tokyo University of Science
, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
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Takafumi Anraku,
Takafumi Anraku
Department of Applied Electronics,
Tokyo University of Science
, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
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Hiroyuki Kanamori,
Hiroyuki Kanamori
Department of Applied Electronics,
Tokyo University of Science
, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
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Tomoaki Kunugi,
Tomoaki Kunugi
Department of Nuclear Engineering, Graduate School of Engineering,
Kyoto University
, Yoshida, Sakyo, Kyoto 606-8501, Japan
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Kazuho Sato,
Kazuho Sato
Toyota Industries Corporation
, 2-1 Toyoda cyou, Kariya, Aichi 448-8671, Japan
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Tomoyoshi Ito
Tomoyoshi Ito
Japan Science and Technology Agency (JST),
Chiba University
, 1-33 Yayoi, Inage-ku, Chiba 263-8522, Japan and Department of Electronics and Mechanical Engineering, Chiba University
, 1-33 Yayoi, Inage-ku, Chiba 263-8522, Japan
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Shin-ichi Satake
Mem. ASME
Department of Applied Electronics,
Tokyo University of Science
, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
Takafumi Anraku
Department of Applied Electronics,
Tokyo University of Science
, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
Hiroyuki Kanamori
Department of Applied Electronics,
Tokyo University of Science
, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
Tomoaki Kunugi
Department of Nuclear Engineering, Graduate School of Engineering,
Kyoto University
, Yoshida, Sakyo, Kyoto 606-8501, Japan
Kazuho Sato
Toyota Industries Corporation
, 2-1 Toyoda cyou, Kariya, Aichi 448-8671, Japan
Tomoyoshi Ito
Japan Science and Technology Agency (JST),
Chiba University
, 1-33 Yayoi, Inage-ku, Chiba 263-8522, Japan and Department of Electronics and Mechanical Engineering, Chiba University
, 1-33 Yayoi, Inage-ku, Chiba 263-8522, JapanJ. Heat Transfer. Apr 2008, 130(4): 042413 (7 pages)
Published Online: March 21, 2008
Article history
Received:
June 21, 2007
Revised:
July 6, 2007
Published:
March 21, 2008
Citation
Satake, S., Anraku, T., Kanamori, H., Kunugi, T., Sato, K., and Ito, T. (March 21, 2008). "Measurements of Three-Dimensional Flow in Microchannel With Complex Shape by Micro-Digital-Holographic Particle-Tracking Velocimetry." ASME. J. Heat Transfer. April 2008; 130(4): 042413. https://doi.org/10.1115/1.2818783
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