球クエット系の層流-乱流遷移における撹乱消滅の受容性

Material type: 文書・図像類

Author: 中林, 功一ほか

Publisher: 航空宇宙技術研究所

Publication date: 2000-12

Material Format: Digital

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Note (General)：: 27-28 Sept. 1999 (25th). 27-28 Mar. 2000 (26th)層流-乱流遷移過程における再層流化流の受容性を検討した。回転する内球を持つ球クエット流で隙間比β=0.14を対象に、1個のトロイダル型TG(Taylor-Goertler)渦を使って超臨界流モードの中に外部...

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Material Type: 文書・図像類
Title: 球クエット系の層流-乱流遷移における撹乱消滅の受容性
Author/Editor: 中林, 功一
Sha, W.
菅原, 里志
Nakabayashi, Koichi
Sugawara, Satoshi
Author Heading: 中林, 功一
Sha, W.
菅原, 里志
Nakabayashi, Koichi
Sugawara, Satoshi
Publication, Distribution, etc.: 航空宇宙技術研究所
Publication Date: 2000-12
Publication Date (W3CDTF): 2000-12
Alternative Title: Receptivity on relaminarization in laminar-turbulent transition of spherical Couette system
Periodical title: 航空宇宙技術研究所特別資料 = Special Publication of National Aerospace Laboratory
No. or year of volume/issue: 47
Volume: 47
Pages: 55-56
ISSN (Periodical Title): ISSN : 0289-260X
Text Language Code: jpn
Subject Heading: 球クエット流
層流-乱流遷移
再層流化
撹乱消滅
外部擾乱
超臨界流
TG渦
隙間比
回転内球
進行波
受容性
Taylor-Goertler渦
spherical Couette flow
laminar turbulent transition
relaminarization
disturbance disappearance
outside disturbance
supercritical flow
TG vortex
clearance ratio
inner rotating sphere
traveling wave
receptivity
Taylor Goertler vortex
Target Audience: 一般
Note (General): 27-28 Sept. 1999 (25th). 27-28 Mar. 2000 (26th)
層流-乱流遷移過程における再層流化流の受容性を検討した。回転する内球を持つ球クエット流で隙間比β=0.14を対象に、1個のトロイダル型TG(Taylor-Goertler)渦を使って超臨界流モードの中に外部擾乱を導入した。トロイダル型TG渦、スパイラル型TG渦および進行波の初生レイノルズ数は外部擾乱の影響を受けない。しかし、再層流化の初生レイノルズ数はこれら渦の影響を受ける。外部擾乱に対する超臨界撹乱モードの受容性は低Re領域よりも再層流化Re領域で大きい。
Receptivity of relaminarizing flow in the laminar-turbulent transition process has been investigated by the introduction of outside disturbances into the super-critical flow modes with one toroidal TG (Taylor-Goertler) vortex for clearance ratio beta = 0.14 in the spherical Couette flow with an inner rotating sphere. The onset Reynolds number of toroidal TG vortex, spiral TG vortex and traveling waves are not influenced by the outside disturbance. However, the onset Reynolds number of the relaminarization is influenced by them. The receptivity of the super-critical disturbance modes to the outside disturbances is greater in the relaminarizing Re-range than the lower Re-range.
資料番号: AA0028636017
レポート番号: NAL SP-47
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