| Project/Area Number |
16K12858
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Natural disaster / Disaster prevention science
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| Research Institution | Niigata Institute of Technology |
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Principal Investigator |
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| Research Collaborator |
Mochida AkAshi
Okaze Tsubasa
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| Project Period (FY) |
2016-04-01 – 2019-03-31
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| Project Status |
Completed (Fiscal Year 2018)
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| Budget Amount *help |
¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2018: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
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| Keywords | 減風性能 / 透視性 / 飛散物堆積 / 風害対策 / ガイドライン / 減風 / 飛散物 |
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| Outline of Final Research Achievements |
By wind tunnel experiments for mean and turbulent velocity fields around porous windbreak fence, the relationship between the porosity and the flow property were clarified. The influence of the hole shape of the fences was also investigated. The validation database for CFD simulations was provided by the systematic wind tunnel experiment which changed the various parameter such as porosity, opening size, and fence thickness. Next, CFD simulations using porous jump condition were conducted by changing various parameters related to the fence property. By examining the predicted mean and turbulent velocity fields, tentative best practice guidelines of CFD simulation applied to such flow can be provided. Furthermore, some insights of prediction method of sand accumulation and erosion around obstacles using CFD were obtained based on the results of the wind tunnel experiment.
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| Academic Significance and Societal Importance of the Research Achievements |
地域環境における風害対策として、よく用いられる有孔フェンスやネットの合理的な設計・設置方法に関する新たな知見を得た。CFD（Computational Fluid Dynamics；数値流体力学）を用いた解析を活用して、防風性能・透視性・飛散物堆積を総合的にコントロールする風害対策を行うための基礎となる知見を得た。
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