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  1. B200 工学部/工学研究科
  2. B200a 雑誌掲載論文
  3. 学術雑誌

エッジトーン現象によって噴流中に形成された組織構造の特徴 (第1報, レイノルズ応力と乱れの生成項からの考察)

http://hdl.handle.net/2237/9095
http://hdl.handle.net/2237/9095
95b1a6f4-162f-411a-9afb-20a8024d6206
名前 / ファイル ライセンス アクション
JsMecEngB_72-716-915.pdf JsMecEngB_72-716-915.pdf (1.1 MB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2007-12-06
タイトル
タイトル エッジトーン現象によって噴流中に形成された組織構造の特徴 (第1報, レイノルズ応力と乱れの生成項からの考察)
言語 ja
その他のタイトル
その他のタイトル Characteristics of Coherent Structures in a Jet Indicating Edgetone Oscillations (1st Report, Examination into Reynolds Stress and Turbulence Energy Production)
言語 en
著者 河合, 勇太

× 河合, 勇太

WEKO 20630

ja 河合, 勇太

Search repository
KAWAI, Yuta

× KAWAI, Yuta

WEKO 20631

en KAWAI, Yuta

Search repository
辻, 義之

× 辻, 義之

WEKO 20632

ja 辻, 義之

Search repository
TSUJI, Yoshiyuki

× TSUJI, Yoshiyuki

WEKO 20633

en TSUJI, Yoshiyuki

Search repository
久木田, 豊

× 久木田, 豊

WEKO 20634

ja 久木田, 豊

Search repository
KUKITA, Yutaka

× KUKITA, Yutaka

WEKO 20635

en KUKITA, Yutaka

Search repository
アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
権利
言語 ja
権利情報 日本機械学会
権利
言語 ja
権利情報 本文データは学協会の許諾に基づきCiNiiから複製したものである。
キーワード
主題Scheme Other
主題 Edge Tone
キーワード
主題Scheme Other
主題 Triple Decomposition
キーワード
主題Scheme Other
主題 Conditional Sampling Method
キーワード
主題Scheme Other
主題 Coherent Structure
抄録
内容記述 The characteristics of large-scale coherent structures were investigated for a two-dimensional turbulent (Re=22000) jet undergoing self-sustained oscillations due to the interactions with the leading edge of a flat plate. The edge was placed 20 times the jet initial thickness away from the nozzle exit, x1/b_e=20. The flow in this geometry was characterized by periodic oscillations, or edgetone, whose length scale reaches a distance between nozzle and leading edge. The X-probe hot wire data were filtered and phase-averaged to discriminate the periodic velocity fluctuation components from the steady and the non-periodic components. The spatial distribution of the vorticity derived from the periodic velocity components indicate clearly the generation of large-scale coherent structures at the frequency of the jet oscillations. Each coherent structure, or a fluid volume with a correlated vorticity, increased monotonically its lateral extent and the maximum magnitude of vorticity in it, as it was transported toward the edge. The contribution of the periodic velocity flucutuations to the Reynolds stress and the turbulence energy production by far overweighed that of the non-periodic fluctuations in 10≤x1/b_e≤30. The coherent structures indicated monotonic decay along the flat plate.
言語 en
内容記述タイプ Abstract
出版者
言語 ja
出版者 日本機械学会
言語
言語 jpn
資源タイプ
資源タイプresource http://purl.org/coar/resource_type/c_6501
タイプ journal article
出版タイプ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
関連情報
関連タイプ isVersionOf
識別子タイプ URI
関連識別子 http://ci.nii.ac.jp/naid/110004718549/
ISSN
収録物識別子タイプ PISSN
収録物識別子 0387-5016
書誌情報 ja : 日本機械学會論文集 B編

巻 72, 号 716, p. 915-923, 発行日 2006-04
フォーマット
application/pdf
著者版フラグ
値 publisher
URI
識別子 http://hdl.handle.net/2237/9095
識別子タイプ HDL
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