超音速乱流混合層の実験

Material type: 文書・図像類

Author: 小室, 智幸ほか

Publisher: 航空宇宙技術研究所

Publication date: 1985-10

Material Format: Digital

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Note (General)：: An experimental study on single-stream and two-stream supersonic mixing layers was made to investigate the effect of compressibility on their mean pro...

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Material Type: 文書・図像類
Title: 超音速乱流混合層の実験
Author/Editor: 小室, 智幸
村上, 淳郎
工藤, 賢司
鎮西, 信夫
升谷, 五郎
KOMURO, Tomoyuki
MURAKAMI, Atsuo
KUDO, Kenji
CHINZEI, NOBUO
MASUYA, Goro
Author Heading: 小室, 智幸
村上, 淳郎
工藤, 賢司
鎮西, 信夫
升谷, 五郎
KOMURO, Tomoyuki
MURAKAMI, Atsuo
KUDO, Kenji
CHINZEI, NOBUO
MASUYA, Goro
Publication, Distribution, etc.: 航空宇宙技術研究所
Publication Date: 1985-10
Publication Date (W3CDTF): 1985-10
Alternative Title: AN EXPERIMENT ON SUPERSONIC TURBULENT MIXING LAYERS
Periodical title: 航空宇宙技術研究所報告 = Technical Report of National Aerospace Laboratory TR-884
No. or year of volume/issue: 884
Volume: 884
Pages: 14-
ISSN (Periodical Title): ISSN : 0389-4010
Text Language Code: jpn
Target Audience: 一般
Note (General): An experimental study on single-stream and two-stream supersonic mixing layers was made to investigate the effect of compressibility on their mean properties. Free streams on both sides of the two-stream mixing layer had Mach numbers of 2.3 and 1.35 with a velocity ratio of 0.74.One or the other of the streams was blocked for the single-stream experiment. Pitot and static pressure surveys were conducted to deduce mean velocity profiles. Self-similar and linearly spreading flows were established at distances of approximately 100 and 220 times the momentum thickness of separated boundary layer from the beginning point of the mixing layer for the single- and two-stream cases, respectively. It was found that weak compression and expansion waves remaining in a test section have little effect on the spreading. In the single-stream case, spreading rates descreased with increasing free stream Mach number. This tendency agrees not only qualitatively but also quantitatively with the tendency obtained in the majority of the previous experiments. The spreading rate of the two-stream mixing layer was about half of that in the single-stream layer with the same free stream Mach number as the high velocity side. This result agreed with previously obtained spreading rates for incompressible two-stream mixing layers with the same value of velocity ratio. In the present two-stream mixing layer, therefore, it can be concluded that there was no compressibility effect because of the small velocity difference.
資料番号: NALTR0884000
レポート番号: NAL TR-884
Access Restrictions: 限定公開
Data Provider (Database): 国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）
https://irdb.nii.ac.jp
Original Data Provider (Database): 宇宙航空研究開発機構 : 宇宙航空研究開発機構リポジトリ