| Item type |
テクニカルレポート / Technical Report(1) |
| 公開日 |
2015-03-26 |
| タイトル |
|
|
タイトル |
高・低亜音速における乱流境界層の構造の研究 |
| 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 |
An Investigation of the Structure of High and Low Subsonic Turbulent Boundary Layer. |
| 著者 |
穂積, 弘一
HOZUMI, Koichi
V., ZaKKay
V., Barra
|
| 著者所属 |
|
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航空宇宙技術研究所空気力学第一部 |
| 著者所属（英） |
|
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|
en |
|
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First Aerodynamics Division, National Aerospace Laboratory(NAL) |
| 著者所属（英） |
|
|
|
en |
|
|
New York University, Antonio Ferri Laboratories |
| 著者所属（英） |
|
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|
en |
|
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New York University, Antonio Ferri Laboratories |
| 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-610
巻 610,
p. 40,
発行日 1980-05
|
| 抄録（英） |
|
|
内容記述タイプ |
Other |
|
内容記述 |
Simultaneous measurements of velocity, wall pressure, and wall shear fluctuations in a turbulent boundary layer for three stream conditions, U∞=675, 73 and 32.6 ft/sec and Reθ=108,000, 12,500 and 6,560 respectively, are performed. The present experiments were performed in order to understand the nature of coherent(or quasi-ordered)structures of the turbulent boundary layer at high subsonic speeds. That is, in order to establish the relationship on interaction between the large scale outer structure and the turbulent″burst″in the wall region, the conditional sampling analysis is has been applied to digitized fluctuation. Then, for the events detected, ensemble averaged time signature is obtained. The results of this investigation at high speeds did not yet resolve the question as to whether at high subsonic speeds there is, beside the outer flow process, a distinct inner region. With the limited instrumentation available it was not possible at the high subsonic speed to resolve any inner sublayer region, although it was found that the outer flow structure exert a strong influence on the wall. The experimental results at low subsonic speeds, on the other hand, did indeed identify an inner and outer region, and duplicated some of the results at low subsonic speed by other investigations. |
| ISSN |
|
|
収録物識別子タイプ |
ISSN |
|
収録物識別子 |
0389-4010 |
| 資料番号 |
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|
内容記述タイプ |
Other |
|
内容記述 |
資料番号: NALTR0610000 |
| レポート番号 |
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|
内容記述タイプ |
Other |
|
内容記述 |
レポート番号: NAL TR-610 |
naltr00610.pdf (2.5 MB)
