縦渦発生ジェットにより発生する渦の可視化(噴流)

概要

論文の詳細を見る
Jet issuing through small holes into a freestream have proven effective in the control of boundary layer separation. Longitudinal (streamwise) vortices are produced by the interaction between the jet and freestream. This technique is known as the vortex generator jets method. In the case of a jet inclined to the wall from which the jet issues, the separation control work better. Although the mechanism for suppressing flow separation using vortex generator jets have been studied by many researchers, the details of near fields of an inclined jet are not cleared yet. In the present study flow visualization technique is applied to know the unsteady feature of near fields of the jet exit. At lower Reynolds number it was found that the separation area does not flow to the downstream, which is different from the past result. Furthermore we found that the separation area moves to the downstream at the Reynolds number higher than that compared with the case of the cylinder wake.
一般社団法人日本機械学会の論文
2004-03-03