@inproceedings{oai:jaxa.repo.nii.ac.jp:00005926,
 author = {浅井, 雅人 and 小西, 康郁 and Asai, Masahito and Konishi, Yasufumi},
 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37回・第38回, JAXA Special Publication: Proceedings of the 37th and 38th JAXA Workshops on Investigation and Control of Boundary-Layer Transition},
 month = {Feb},
 note = {Two kinds of experiments are carried out on the instability and breakdown of low-speed streaks. First the development of subharmonic streak instability is examined by using artificially-generated spanwise-periodic low-speed streaks in a laminar boundary layer. Up to the nonlinear saturation stage of the streak instability, the disturbance development along each low-speed streak is similar to that observed in a single low-speed streak. Beyond the saturation stage, the neighboring quasi-streamwise vortices developing along each low-speed streak interact with each other, causing an arch-like vortex structure to develop away from the wall. After the breakdown of the primary low-speed streaks, near-wall streaks newly develop downstream. The developed low-speed streaks have lateral spacing of 100 wall units, the same as the value in wall turbulence. Secondly two-dimensional suction is applied to a turbulent boundary layer through a perforated wall strip to realize a quasi-laminar boundary layer with suction-survived high-intensity turbulence, and spanwise-periodic low-speed streaks are artificially introduced there. The results show that under such high-intensity background turbulence the streak breakdown is governed not by the linear instability process but by the transient disturbance growth., 資料番号: AA0063156007, レポート番号: JAXA-SP-06-013},
 pages = {21--24},
 publisher = {宇宙航空研究開発機構, Japan Aerospace Exploration Agency (JAXA)},
 title = {ストリーク不安定の実験},
 volume = {JAXA-SP-06-013},
 year = {2007}
}