乱流変動を伴う境界層における壁近傍ストリーク構造の発生と成長
書誌事項
- タイトル別名
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- Appearance and growth of near-wall low-speed streaks in a boundary layer subjected to turbulent fluctuations
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Appearance and growth of near-wall low-speed streaks are examined in the transition process of boundary layer relaminarized by suction through a short strip of perforated wall. Near-wall streaks are almost completely suppressed by the boundary-layer suction. Immediately downstream of the suction strip, residual turbulent fluctuations convecting from upstream can generate low-speed streaks. Subsequently the streaks break down due to their instability, leading to retransition to wall turbulence. The low-frequency fluctuations associated with the near-wall streaks are found to grow algebraically up to 10 percent of the free-stream velocity in term of r.m.s. value of u-fluctuation. The spacing of near-wall streaks appearing in the retransition process is not so different from that of developed wall turbulence without suction.
資料番号: AA0045947013
レポート番号: NAL SP-56
収録刊行物
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- 航空宇宙技術研究所特別資料: 境界層遷移の解明と制御研究会講演論文集 第29回・第30回 = Special Publication of National Aerospace Laboratory: Proceedings of the 29th and 30th NAL Workshops on Investigation and Control of Boundary-Layer Transition
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航空宇宙技術研究所特別資料: 境界層遷移の解明と制御研究会講演論文集 第29回・第30回 = Special Publication of National Aerospace Laboratory: Proceedings of the 29th and 30th NAL Workshops on Investigation and Control of Boundary-Layer Transition 56 45-48, 2002-12
航空宇宙技術研究所
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詳細情報 詳細情報について
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- CRID
- 1050011086284945664
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- NII論文ID
- 120006838908
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- NII書誌ID
- AN10097345
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- ISSN
- 1347457X
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- Web Site
- http://id.nii.ac.jp/1696/00038198/
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- 本文言語コード
- ja
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- 資料種別
- conference paper
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- データソース種別
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