For the purpose of combating desertification, it is important to understand mechanisms of the wind-blown sand movement, which is essentially a complicated two-phase flow phenomenon of sand particles and air. Therefore, we investigated the flow field around a model dune and the erosion process of the dune. In this study, we employed a porous fence, which was installed on the model dune, and examined its effect on the sand movement. The erosion process and its relationship with the turbulent intensity and the flow around the dune were discussed focusing on dependence of the flow field on the fence porosity. We tested four types of porous fences, which had different porosities: 0% (no permeability), 10%, 30%, and 50%. How a position of the fence affects suppression of the dune erosion was also examined. In the present experimental range, it can be concluded that the most effective fence position to suppress the sand movement should depend on porosity of the fence.
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ASME 2010 3rd Joint US-European Fluids Engineering Summer Meeting collocated with 8th International Conference on Nanochannels, Microchannels, and Minichannels
August 1–5, 2010
Montreal, Quebec, Canada
Conference Sponsors:
- Fluids Engineering Division
ISBN:
978-0-7918-4948-4
PROCEEDINGS PAPER
Wind Tunnel Experiments on How a Porous Fence Affects Flow and Erosion on Sand Dune
Daisuke Aoshima,
Daisuke Aoshima
Tokyo University of Science, Noda, Chiba, Japan
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Itsuki Nakamura,
Itsuki Nakamura
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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Makoto Yamamoto,
Makoto Yamamoto
Tokyo University of Science, Tokyo, Japan
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Yasuo Kawaguchi
Yasuo Kawaguchi
Tokyo University of Science, Noda, Chiba, Japan
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Daisuke Aoshima
Tokyo University of Science, Noda, Chiba, Japan
Itsuki Nakamura
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
Makoto Yamamoto
Tokyo University of Science, Tokyo, Japan
Yasuo Kawaguchi
Tokyo University of Science, Noda, Chiba, Japan
Paper No:
FEDSM-ICNMM2010-30957, pp. 2837-2842; 6 pages
Published Online:
March 1, 2011
Citation
Aoshima, D, Nakamura, I, Sakamoto, Y, Tsukahara, T, Yamamoto, M, & Kawaguchi, Y. "Wind Tunnel Experiments on How a Porous Fence Affects Flow and Erosion on Sand Dune." Proceedings of the ASME 2010 3rd Joint US-European Fluids Engineering Summer Meeting collocated with 8th International Conference on Nanochannels, Microchannels, and Minichannels. ASME 2010 3rd Joint US-European Fluids Engineering Summer Meeting: Volume 1, Symposia – Parts A, B, and C. Montreal, Quebec, Canada. August 1–5, 2010. pp. 2837-2842. ASME. https://doi.org/10.1115/FEDSM-ICNMM2010-30957
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