複雑地形上の風車ハブ高さ風速に与える流入気流性状と標高データの影響

内田 孝紀; 丸山 敬; 竹見 哲也; 大屋 裕二; 道下 和明

doi:10.14887/kazekosymp.20.0.24.0

PROCEEDINGS OF THE 20th NATIONAL SYMPOSIUM ON WIND ENGINEERING

DOI https://doi.org/10.14887/kazekosymp.20.0.24.0

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Co-host: The Institute of Electrical Engineering of Japan, Japanese Society of Steel Construction, Japan Society of Civil Engineers, Meteorlological Society of Japan, Architectural Institute of Japan, Japan Association for Wind Engineering

INFLUENCE OF INFLOW PROFILE AND ELEVATION DATA ON WIND SPEED OF HUB HEIGHT OVER COMPLEX TERRAIN

*Takanori Uchida, Takashi Maruyama, Tetsuya Takemi, Yuji Ohya, Kazutoshi Michishita

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Keywords: Complex terrain, LES, Inflow profile, Elevation data

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Pages 24

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Abstract

In the present study, an influence of an inflow profile and a spatial resolution of an elevation data on wind speed of a hub height over complex terrain were investigated. For this purpose, a large-eddy simulation (LES) based on a generalized curvilinear collocated grid was done. It was shown that a speed-up ratio at a position of a hub height increased, as a power law exponent became small. About an influence of a spatial resolution of an elevation data, it was shown that a spatial resolution decreased, and a speed-up ratio at a position of a hub height decreased, too. Furthermore, an influence of inflow turbulences was investigated.

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