@inproceedings{oai:jaxa.repo.nii.ac.jp:00038106, author = {関下, 信正 and 蒔田, 秀治 and 山田, 裕二 and 川崎, 繁 and Sekishita, Nobumasa and Makita, Hideharu and Yamada, Yuji and Kawasaki, Shigeru}, book = {航空宇宙技術研究所特別資料: 第28回境界層遷移の解明と制御研究会講演論文集, Special Publication of National Aerospace Laboratory: Proceedings of the 28th NAL Workshops on Investigation and Control of Boundary-Layer Transition}, month = {Jan}, note = {Vortical structure was investigated in the wake of a sphere for Re = 20,000 in a low turbulence wind tunnel by using a circumferentially located multi-hotwire probe. The coherent vortices were generated in the near-wake recirculating region of X/D approximately equals to 1.8 just behind the sphere, where D was the sphere diameter. The vortices grew downstream to be large-scale coherent structures inclined outwardly. The coherent structures had the meridian scale of about 90 to 135 deg and stremwise scale of about 2D. They became staggeredly arranged and passed alternately on opposite sides of the wake. These structures had Strohal number of about 0.18 but rotated randomly around the axis of the wake., 資料番号: AA0032827014, レポート番号: NAL SP-54}, pages = {53--56}, publisher = {航空宇宙技術研究所, National Aerospace Laboratory (NAL)}, title = {円形状多チャンネル熱線プローブによる球後流中に存在する渦構造の実験的解明}, volume = {54}, year = {2002} }