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デジタル画像処理による剪断乱流の三次元計測
https://jaxa.repo.nii.ac.jp/records/43542
https://jaxa.repo.nii.ac.jp/records/43542e129e852-9e1e-47c7-954e-17e0b9e3338b
名前 / ファイル | ライセンス | アクション |
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nalsp0016046.pdf (811.0 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 | ||||||
タイトル | デジタル画像処理による剪断乱流の三次元計測 | |||||
言語 | ||||||
言語 | jpn | |||||
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(英) | ||||||
その他のタイトル | Three-Dimensional Measurement of Turbulent Shear Flows Using Digital Image Processing | |||||
著者 |
笠木, 伸英
× 笠木, 伸英× 西野, 耕一× Kasagi, Nobuhide× Nishino, Koichi |
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著者所属 | ||||||
東京大学 | ||||||
著者所属 | ||||||
横浜国立大学 | ||||||
著者所属(英) | ||||||
en | ||||||
The University of Tokyo | ||||||
著者所属(英) | ||||||
en | ||||||
Yokohama National University | ||||||
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特別資料 en : Special Publication of National Aerospace Laboratory SP-16 巻 16, p. 289-296, 発行日 1991-12 |
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抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | A three-dimensional particle tracking velocimeter (3-D PTV) for the measurement of turbulent shear flows is described with emphasis on its instrumentation, experimental procedure and data processing algorithm. Motions of neutrally buoyant tracer particles (Nylon 12, specific density of 1.02, typical diameter of 200mum) suspended in a water flow are tracked with a highly automated digital image processing system. Local fluid velocities are determined from 3-D displacement of each particle and the time interval over which particles are tracked. This technique is advantageous over existing one-point measuring techniques such as hot-wire/film probes and a laser Doppler velocimeter in that it can provide not only one-point turbulence statistics but also spatial information on the turbulence structures. Such feature is particularly desirable for the study of coherent turbulence structures which are considered to play a dominant roll in turbulence mechanism. Typical results obtained by the 3-D PTV in fundamental turbulent flows are presented to demonstrate practical capability of the technique. Some author's perspectives on future research direction of the 3-D PTV are also presented. | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0289-260X | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AN10097345 | |||||
資料番号 | ||||||
内容記述タイプ | Other | |||||
内容記述 | 資料番号: NALSP0016046 | |||||
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 SP-16 |