@inproceedings{oai:jaxa.repo.nii.ac.jp:00004886, author = {水島, 二郎 and 武本, 幸生 and Mizushima, Jiro and Takemoto, Yukio}, 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43回・第44回), JAXA Special Publication: Proceedings of the 43rd and 44th JAXA Workshops on "Investigation and Control of Boundar-Layer Transition"}, month = {Feb}, note = {第43回(2008年10月2日-10月3日)「境界層遷移の解明と制御」研究会; 第44回(2009年3月26日-3月27日)「境界層遷移の解明と制御」研究会, 43rd JAXA Workshops on "Investigation and Control of Boundar-Layer Transition" (October 2-3, 2008) ; 44th JAXA Workshops on "Investigation and Control of Boundar-Layer Transition" (March 26-27, 2009), The transition of the flow past a rectangular cylinder from a convectively unstable state to an absolutely unstable one is investigated numerically, in which a localized disturbance is added at a certain point in the flow, and the subsequent spatio-temporal development of the disturbance is observed. We evaluated the absolutely unstable region in the flow field in order to identify the origin of oscillation leading to Karman' vortex street. Our results suggest that the origin lies in the absolutely unstable region, whose spatial scale is proved to be consistent with those reported in previous papers., 資料番号: AA0064575010, レポート番号: JAXA-SP-09-014}, publisher = {宇宙航空研究開発機構, Japan Aerospace Exploration Agency (JAXA)}, title = {角柱(円柱)後方カルマン渦列の発生源}, volume = {JAXA-SP-09-014}, year = {2010} }