@inproceedings{oai:jaxa.repo.nii.ac.jp:00005940, author = {寺島, 修 and 三木, 佑介 and 伊澤, 精一郎 and Xiong, A. K. and 福西, 祐 and Terashima, Osamu and Miki, Yusuke and Izawa, Seiichiro and Xiong, A. K. and Fukunishi, Yu}, 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 = {Streamwise interfaces between laminar and turbulent regions in a flat-plate boundary layer are investigated using a rake of single hotwire probes. Two pieces of piezo-ceramic actuators are used to generate trapezoidal shaped turbulent regions, which have a wide leading edge in the spanwise direction. Its aim is to eliminate the contamination between the side interfaces and the downstream interface that are unavoidable in turbulent spot experiments. Experimental results show that a turbulent region has a sharp leading edge and a gradual trailing edge. It is shown that when a turbulent region passes by, the RMS (Root Mean Square) value remains high for a while although there is little disturbance remaining. It is also shown that inside this region, known as the calmed region, because the flow returns laminar away from the wall, the turbulent flow near the wall is accelerated, which may be causing the inverse-transition., 資料番号: AA0063156021, レポート番号: JAXA-SP-06-013}, pages = {73--76}, publisher = {宇宙航空研究開発機構, Japan Aerospace Exploration Agency (JAXA)}, title = {境界層における層流と乱流の流れ方向界面に関する研究}, volume = {JAXA-SP-06-013}, year = {2007} }