はく離流れの特性周波数に与える主流中の変動周波数の影響 : 流体工学, 流体機械

概要

論文の詳細を見る
The vortex structure within a separated flow region changes greatly when the fluctuation is introduced in a mean-flow. This change was investigated by experiment. As the disturbance fluctuation, the periodic velocity fluctuation was introduced into the mean-flow using the disturbance generator at the upstream of separation shear layer. Frequencies of fluctuation were chosen based on the characteristic frequency of the separation flow. This characteristic frequency is measured in the shear layer or near the trailing edge without the disturbance fluctuation. It was found that the separation region was reduced most effectively when the fluctuation frequency is the same as the vortex shedding frequency of the separation flow without the disturbance fluctuation.
社団法人日本機械学会の論文
2001-01-25