We measured simultaneously the air flow velocity and the suspended sand-particles velocity in the turbulent boundary layer, using particle image velocimetry (PIV), to study the wind-blown sand transport. It is important, in the context of the environmental issues, to elucidate the mechanism of the wind-blown sand, which gives rise to serious problems in arid/desert areas, such as the dust storm and the yellow sand. It is also necessary to understand quantitatively the interaction between the gas phase (air) and the solid phase (sand grains) in the multiphase flow. We found that the momentum exchange between the streamwise and the wall-normal velocities might be inhibited by sand grains and that the streamwise velocity of the gas phase in the multiphase flow was decreased by the momentum exchange between the air and the sand grains. It was observed that gas-phase flow was biased by a cluster of sand grains near a wall.
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ASME-JSME-KSME 2011 Joint Fluids Engineering Conference
July 24–29, 2011
Hamamatsu, Japan
Conference Sponsors:
- Fluids Engineering Division
ISBN:
978-0-7918-4440-3
PROCEEDINGS PAPER
PIV Experiment on the Gas-Solid Multiphase Flow Relevant to Wind-Blown Sand: Comparison of Velocity Fields of Sand Particles and Air Flow by Simultaneous Measurement Available to Purchase
Kenji Otakeguchi,
Kenji Otakeguchi
Tokyo University of Science, Noda, Chiba, Japan
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Daisuke Aoshima,
Daisuke Aoshima
Tokyo University of Science, Noda, Chiba, Japan
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Yusuke Sakamoto,
Yusuke Sakamoto
Tokyo University of Science, Noda, Chiba, Japan
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Takahiro Tsukahara,
Takahiro Tsukahara
Tokyo University of Science, Noda, Chiba, Japan
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Yasuo Kawaguchi,
Yasuo Kawaguchi
Tokyo University of Science, Noda, Chiba, Japan
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Makoto Yamamoto
Makoto Yamamoto
Tokyo University of Science, Tokyo, Japan
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Kenji Otakeguchi
Tokyo University of Science, Noda, Chiba, Japan
Daisuke Aoshima
Tokyo University of Science, Noda, Chiba, Japan
Yusuke Sakamoto
Tokyo University of Science, Noda, Chiba, Japan
Takahiro Tsukahara
Tokyo University of Science, Noda, Chiba, Japan
Yasuo Kawaguchi
Tokyo University of Science, Noda, Chiba, Japan
Makoto Yamamoto
Tokyo University of Science, Tokyo, Japan
Paper No:
AJK2011-12017, pp. 3211-3219; 9 pages
Published Online:
May 25, 2012
Citation
Otakeguchi, K, Aoshima, D, Sakamoto, Y, Tsukahara, T, Kawaguchi, Y, & Yamamoto, M. "PIV Experiment on the Gas-Solid Multiphase Flow Relevant to Wind-Blown Sand: Comparison of Velocity Fields of Sand Particles and Air Flow by Simultaneous Measurement." Proceedings of the ASME-JSME-KSME 2011 Joint Fluids Engineering Conference. ASME-JSME-KSME 2011 Joint Fluids Engineering Conference: Volume 1, Symposia – Parts A, B, C, and D. Hamamatsu, Japan. July 24–29, 2011. pp. 3211-3219. ASME. https://doi.org/10.1115/AJK2011-12017
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