@inproceedings{oai:jaxa.repo.nii.ac.jp:00005466, author = {浅井, 雅人 and Asai, Masahito}, book = {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41回・第42回), JAXA Special Publication: Proceedings of the 41st and 42nd JAXA Workshops on Investigation and Control of Boundar-Layer Transition}, month = {Feb}, note = {第41回「境界層遷移の解明と制御」研究会(2007年10月4日-10月5日), Two-dimensional local wall suction is applied to a developed turbulent boundary layer such that most of turbulent vortices in the original outer layer can survive the suction and cause the resulting laminar flow to undergo re-transition. Near-wall low-speed streaks which are once suppressed by the local wall suction soon start to grow downstream the suction. After attaining near-saturation the low-speed streaks soon undergo the sinuous instability to lead to re-transition. Even under high-intensity turbulence conditions, about half or slightly less than the turbulent intensity of developed wall turbulence, the sinuous instability amplifies disturbances of almost the same wavelength as predicted from the linear stability theory though the actual growth is in the form of wave packet with the number of wave periods not more than two. On the other hand, when low-speed streaks are artificially produced by using a periodic array of screen set immediately downstream of the suction trailing edge where turbulent fluctuations are as strong as in the developed wall turbulence, the streak breakdown is governed not by the linear instability process but by the transient disturbance growth., 資料番号: AA0064237008, レポート番号: JAXA-SP-08-006}, publisher = {宇宙航空研究開発機構, Japan Aerospace Exploration Agency (JAXA)}, title = {低速ストリークの生成と崩壊}, volume = {JAXA-SP-08-006}, year = {2009} }