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TOWER WAKE/BLADE INTERACTION NOISE OF A WIND TURBINE
https://jaxa.repo.nii.ac.jp/records/45204
https://jaxa.repo.nii.ac.jp/records/45204af80f54a-4f46-4402-9ce2-990a2f9b653f
名前 / ファイル | ライセンス | アクション |
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naltr00945.pdf (480.1 kB)
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Item type | テクニカルレポート / Technical Report(1) | |||||
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公開日 | 2015-03-26 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | TOWER WAKE/BLADE INTERACTION NOISE OF A WIND TURBINE | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_18gh | |||||
資源タイプ | technical report | |||||
その他のタイトル | ||||||
その他のタイトル | 風車の支柱と翼との干渉騒音 | |||||
著者 |
西脇, 英夫
× 西脇, 英夫× 武田, 克巳× NISHIWAKI, Hideo× TAKEDA, Katsumi |
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著者所属 | ||||||
航空宇宙技術研究所航空機公害研究グループ | ||||||
著者所属 | ||||||
航空宇宙技術研究所航空機公害研究グループ | ||||||
著者所属(英) | ||||||
en | ||||||
Noise and Emission Research Group, National Aerospace Laboratory(NAL) | ||||||
著者所属(英) | ||||||
en | ||||||
Noise and Emission Research Group, National Aerospace Laboratory(NAL) | ||||||
出版者 | ||||||
出版者 | 航空宇宙技術研究所 | |||||
出版者(英) | ||||||
出版者 | National Aerospace Laboratory(NAL) | |||||
書誌情報 |
航空宇宙技術研究所報告 en : Technical Report of National Aerospace Laboratory TR-945 巻 945, p. 8, 発行日 1987-10 |
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抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | A scale model of a 1.5m dia. two-bladed windturbine was used in an anechoic chamber that provided a free-stream velocity of 8m/s. The blades used were a 1.5/8 scale model of a test machine for a local energy utilization project promoted by the Science and Technology Agency. The height of the tower from the ground level was 1.8m. The acoustic measurements were made in a circle of 1.6m downstream from the machine at the height of the windmill centerline. The noise level of the on-axis spectra was about 15dB larger than that of the offaxis. This is a result of the dipole nature of the acoustic impulse. The Wortmann airfoil (FX 77-W series) was employed for the blade profiles and the Reynolds number was 10(exp 5), based on the tip chord length. The experiment revealed that the sound intensity at each harmonic was not proportional to the axial and radial extents of the wake. The elliptic slender configuration was the quietest, while the square configuration was the loudest. From a practical point of view, it is suggested that the circular section is most suitable for the tower leg. | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0389-4010 | |||||
資料番号 | ||||||
内容記述タイプ | Other | |||||
内容記述 | 資料番号: NALTR0945000 | |||||
レポート番号 | ||||||
内容記述タイプ | Other | |||||
内容記述 | レポート番号: NAL TR-945 |