境界層遷移に対する主流乱れのスケールの影響
| Autor: | Kenchi, Toshiaki, Matsubara, Masaharu |
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| Jazyk: | japonština |
| Rok vydání: | 2006 |
| Předmět: | |
| Zdroj: | 宇宙航空研究開発機構特別資料: 境界層遷移の解明と制御研究会講演論文集 第35回・第36回 = JAXA Special Publication: Proceedings of the 35th and 36th JAXA Workshops on Investigation and Control of Boundary-Layer Transition. :11-14 |
| ISSN: | 1349-113X |
| Popis: | The present experiment focused on revealing effect of scales and directional components of free stream turbulence on boundary layer transition, especially the growth rate of the disturbance energy in the streamwise direction. Free stream turbulence generated by a turbulence grid mounted upstream of the contraction has typical character of axisymmetric turbulence with strong anisotropy. The experimental results with the anisotropic free stream turbulence show the non-modal growth disturbance even at 0.7 percent turbulence intensity. The correlation between the filtered free stream fluctuation and growth rate of the disturbance suggests that the wall-normal velocity fluctuation in the free stream dominates the disturbance growth. 資料番号: AA0049208004 レポート番号: JAXA-SP-05-012 |
| Databáze: | OpenAIRE |
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