Hokkaido University Department of Mechanical Science, Faculty of Engineering
Hokkaido Institute of Technology
出版者
航空宇宙技術研究所
出版者（英）
National Aerospace Laboratory (NAL)
雑誌名
航空宇宙技術研究所特別資料: 境界層遷移の解明と制御研究会講演論文集 第29回・第30回
雑誌名(英)
Special Publication of National Aerospace Laboratory: Proceedings of the 29th and 30th NAL Workshops on Investigation and Control of Boundary-Layer Transition
巻
56
ページ
41 - 44
発行年
2002-12
抄録（英）
A model calculation is made to interpret the quasi-periodic nature of the large eddies in the outer layer of a flat plate turbulent boundary layer, in that the boundary layer flow is modeled by using a 2D discrete vortex method. The power spectrum of velocity fluctuations shows the presence of quasi-periodic motion in the model flow. It is argued that a possible mechanism responsible to the occurrence of the quasi-periodicity might be the inviscid, varicose-mode instability of a symmetric flow which consists of a boundary layer flow and its mirror image with respect to the wall.
乱流境界層外層域の擬周期性について
nalsp0056012.pdf
(879.28KB)
