管内乱流から発達する乱流噴流の統計値に関する実験

Material type: 文書・図像類

Author: 石田, 崇ほか

Publisher: 航空宇宙技術研究所

Publication date: 2003-06

Material Format: Digital

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Note (General)：: The turbulence characteristics of air jets issuing from the exit of turbulent duct and pipe flows were investigated using hot wire anemometry. The sta...

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Material Type: 文書・図像類
Title: 管内乱流から発達する乱流噴流の統計値に関する実験
Author/Editor: 石田, 崇
小田, 誠
松原, 雅春
吉田, 尚史
土屋, 良明
Ishida, T.
Oda, M.
Matsubara, M.
Yoshida, T.
Tsuchiya, Y.
Author Heading: 石田, 崇
小田, 誠
松原, 雅春
吉田, 尚史
土屋, 良明
Ishida, T.
Oda, M.
Matsubara, M.
Yoshida, T.
Tsuchiya, Y.
Publication, Distribution, etc.: 航空宇宙技術研究所
Publication Date: 2003-06
Publication Date (W3CDTF): 2003-06
Alternative Title: Statistical properties of turbulent jets developed from turbulent pipe flows
Periodical title: 独立行政法人航空宇宙技術研究所特別資料 = Special Publication of National Aerospace Laboratory SP-59
No. or year of volume/issue: 59
Volume: 59
Pages: 4-
ISSN (Periodical Title): ISSN : 1347-457X
Text Language Code: jpn
Subject Heading: 2-D, rectangular , circular pipe, jet , correlation, coherent structure
Target Audience: 一般
Note (General): The turbulence characteristics of air jets issuing from the exit of turbulent duct and pipe flows were investigated using hot wire anemometry. The statistics of turbulence that include turbulence intensity, skewness factor and flatness factor show that the strong entrainment that bring the surrounding fluid at rest into the jet around the early development of the jet and these values saturate to the general turbulence values downstream. The velocity correlations show apparent negative values that suggest certain large scale of the turbulence both in time and the spanwise direction. Though the spectra never indicate any specific peaks, this result suggests that the jet flows from the turbulent duct or pipe flows have a large coherent structure at least in the region close to the jet exit.
資料番号: NALSP0059017
レポート番号: NAL SP-59
Access Restrictions: 限定公開
Periodical Title (NCID): AN10097345
https://ci.nii.ac.jp/ncid/AN10097345
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