303 二次元物体から放出されるはく離せん断層内に発生する三次元渦構造(流体工学I)(オーガナイズドセッション(a)材料力学・材料強度に関する新展開)

概要

論文の詳細を見る
3-D vortices structures in the separation shear layer shed from a 2-D bluff body were investigated experimentally by flow visualization and measurement of velocity fluctuations in the 2-D vortex formation region. It is generally known that 3-D vortex structures, called the " rib structure" or "longitudinal vortex" , cause the breakdown or dislocation of 2-D vortex and the production of Reynolds shearing stress. The purpose of this investigation is to understand the appearance conditions of 3-D vortex in the separation shear layer. As the result, it was found that the longitudinal vortex pair exists evidently in the separation shear layer and its scale shows approximately similar to integral scale of velocity fluctuation in the span wise direction.
一般社団法人日本機械学会の論文
2000-09-25